Câu 1: If the word ”assembly” or ”Installation” does not appear in the title, the drawing is

• a) Repair drawing
• b) Detail drawing
• c) Assembly drawing

Câu 2: If the CG is too far forward (forward the stability limit of the aircraft manufacturer), what happen?

• a) A/C still Balance
• b) Nothing
• c) A/C would be uncontrollable

Câu 3: The sawing movement is done with

• a) Return stroke under pressure
• b) Forward stroke under pressure
• c) Return stroke under pressure and Forward stroke under pressure

Câu 4: What layer is applied to wash primer

• a) Intermediate primer
• b) Topcoat
• c) Nil

Câu 5: A room temperature curing is done between

• a) 18° - 25°C.
• b) 10° - 15°C.
• c) 15° - 30°C.

Câu 6: The sharpest bend that can be placed in a piece of metal without critically weakening the part is called the.

• a) Bend allowance.
• b) Minimum radius of bend.
• c) Maximum radius of bend.

Câu 7: Angular contact bearings are designed to accept an axial load in one direction only. The result of opposite loading is

• a) Excessive stress only
• b) An increase in temperature only
• c) Excessive stress and an increase in temperature

Câu 8: Corrosion on titanium alloy when it does occur is recognized:

• a) Red oxide
• b) A black or white coloured oxide
• c) Green oxide

Câu 9: Do we need re-calculate and record the W&B after modification or additional equipment on aircraft?

• a) Yes
• b) No
• c) Do not record

Câu 10: B M S stands for

• a) Business Material Specification
• b) Boeing Material Specification
• c) Boeing Material Service

Câu 11: The bend allowance is

• a) Determined with the help of the neutral fibre
• b) Caused by the bending radius
• c) Not the length reduction

Câu 12: Which rating authorizes to carry out maintenance work on aircraft and aircraft components (including engines / APU), provided those aircraft components are built in the aircraft.

• a) A-Rating
• b) B-1 / 3 -Rating
• c) C-Rating

Câu 13: Any rivets located within the area of corrosion and affected by the corrosion must be

• a) Replaced
• b) Repainted if its paint damaged
• c) Inspected on its manufactured head and upset head

Câu 14: The lever is balanced when the algebraic sum of the moments about the Datum is

• a) Positive
• b) Negative
• c) Zero

Câu 15: Edge margin depends only on which rivet size?

• a) Rivet length
• b) Rivet diameter
• c) Rivet material

Câu 16: Drawbacks of bonded joints?

• a) Low heat resistance
• b) Lower concentration of mechanical loads
• c) Lower manufacturing costs

Câu 17: Which is the following tool used to mark permanent lines on component or part surfaces

• a) A ruler
• b) A pencil
• c) A scriber

Câu 18: Refer to the repair classification and select the repair depending on the repair grade, What does the grade 0 mean?

• a) No repair is necessary (permitted damage).
• b) Permanent repair.
• c) A check of the repair is necessary at each C−check.

Câu 19: Purpose of insulation measurement

• a) Enhancing connection between conductors or conductors and ground potential
• b) Measuring the potential difference
• c) Anti fire burning

Câu 20: Weighing of Airplanes in accordance with EU-OPS-1 with which Subpart?

• a) Subpart J
• b) Subpart A
• c) Subpart E

Câu 21: The use of paint strippers is recommended where

• a) The corrosion is heavy
• b) The corrosion is light
• c) The corrosion is heavy and covers a large area

Câu 22: re Time of sealant is

• a) Same as its tack free time
• b) Less than its tack free time
• c) approximately 2 to 3 times the tack free time

Câu 23: During towing A/C with the tractor, can we make a turn angle without care?

• a) Yes
• b) No
• c) The max turning angle must care

Câu 24: What can increase risk of hazards?

• a) Drug and alcohol use
• b) Soft drink use
• c) Bottled water use

Câu 25: Spacing or Row Spacing of solid rivets is the distance between fastener rows, taken from the hole centres. How to calculate the spacing?

• a) 4 to 8 diameter of rivet
• b) 4 to 5 diameter of rivet
• c) 6 to 8 diameter of rivet

Câu 26: After Installation of fluid tubes. The system are normally pressure tested to

• a) Maximum working pressure.
• b) 2 times maximum working pressure.
• c) 1½ times maximum working pressure.

Câu 27: Corrosion can be found by the following methods of inspection:

• a) Visual, dye penetrant and ultrasonic only
• b) Visual, dye penetrant, ultrasonic, eddy current, X−ray
• c) Visual only

Câu 28: Where are sealants used mainly on aircraft structure?

• a) To seal fuel tanks and maintain cabin pressure
• b) To seal fuel tanks only
• c) To seal water tanks only

Câu 29: Which of the following is a NDT method

• a) Stress testing
• b) Hardness testing
• c) Radiography

Câu 30: Which method of solder cannot be used for iron or nickel-base alloy

• a) Nickel Solders
• b) Copper-Phosphate Solders
• c) Silver solders

Câu 31: Measuring the Spring Tension, The way to do this is to compress or pull that depends on

• a) The material
• b) The spring type
• c) The radius of spring

Câu 32: The size and the punch of the rivet gun and the mass of the dolly depend:

• a) The rivet material and the accessibility of the structure.
• b) The rivet diameter and the accessibility of the structure.
• c) The rivet diameter, The rivet material and the accessibility of the structure.

Câu 33: Dry operating Mass includes ….

• a) Usable Fuel
• b) Traffic load
• c) Potable water

Câu 34: What requirements and general selection criteria for repair work with a splice are correct?

• a) As a general rule, replacement should always be preferred to repair
• b) A maximum of four repair splices are permitted in one wire, the ones mounted during aircraft construction are not relevant.
• c) Whenever more than one splice assembly is necessary during repair, the separation minimum of the splices is 0.5 inches.

Câu 35: Refer to the repair classification and select the repair depending on the repair grade, What does the grade 2 mean?

• a) No repair is necessary (permitted damage).
• b) Permanent repair.
• c) A check of the repair is necessary at each C−check.

Câu 36: D= +0.009 30mm -0.004. The lower limit is?

• a) 30.004 mm
• b) 30.009mm
• c) 29.006mm

Câu 37: In what are task intervals expressed

• a) Hours, cycles, calendar time, flight day
• b) Hours, cycles, calendar time
• c) Hours, cycles, calendar time or a letter check

Câu 38: What is lower limit?

• a) The highest allowed size in the production. You can calculate it from the basic size and the upper deviation
• b) The lowest allowed size and can be calculated from the basic size and the lower deviation
• c) Is calculated by the base line minor the tolerance

Câu 39: The back countersinking tool. The operation of smoothing and squaring the surface around a hole is known as:

• a) Spotfacing
• b) Counter boring
• c) Countersinking

Câu 40: If the flush head height is larger than the material thickness of the part, the cylindrical remaining hole will has alway to stay ...... (AIRBUS)

• a) Min. 0,5mm
• b) Min. 0,4mm
• c) Min. 0,2mm

Câu 41: During taxi/towing, what is a requirement for the brake man in cockpit?

• a) Standing and watching
• b) Seating without the seatbelt fastened
• c) Seating with the seatbelt fastened

Câu 42: What is used to remove chromium oxides?

• a) Fluxes containing fluorine
• b) Fluxes containing chlorua
• c) Fluxes containing sulfur

Câu 43: What chapter you find out maintenance procedures after hard landing?

• a) Chapter 12
• b) Chapter 24
• c) Chapter 5

Câu 44: Aluminium-silicon solders can be removed by

• a) Using acetone
• b) Using cold milk
• c) Using hot water

Câu 45: A structural damage report information have to be considered about:

• a) Location of damage, type of damage and extent of damage.
• b) Location of damage only
• c) Extent of damage only

Câu 46: A potentially fire hazard is typically caused by

• a) Lubricating bearings
• b) Over-grease bearings
• c) High-speed bearings

Câu 47: What is the range of normal soldering gap?

• a) 0.05 to 0.5mm
• b) 0.5 to 1.5mm
• c) 5 to 10mm

Câu 48: What is the purpose of backlash?

• a) To help gears from jamming and making contact on both sides of their teeth simultaneously.
• b) To prevent for lubricant space and differential expansion between the gear components and the housing.
• c) To prevent gears from jamming and making contact on both sides of their teeth simultaneously. Also it provides for lubricant space and differential expansion between the gear components and the housing.

Câu 49: Some common defects/causes of damage in upset head rivet. Which statement is most correct?

• a) Too small upset head, Too large upset head, Rivet shaft drops during squeezing, Cracks in upset head.
• b) Too small upset head, Too large upset head, Die head does no set right, Rivet shaft drops during squeezing.
• c) Too small upset head, Too large upset head, Die head does no set right, Rivet shaft drops during squeezing, Cracks in upset head.

Câu 50: A/C can do weighing process at outside Hangar?

• a) Yes
• b) No
• c) Yes, if no rain.

Câu 51: All corrosion found must be immediately and completely removed because corrosion which remains will cause:

• a) new corrosion and further decrease the strength of the structure
• b) Paint damage
• c) Sealant damage

Câu 52: Which program are flight-hour sensitive

• a) Structural Inspection Program
• b) Systems Maintenance and Zonal Inspection Programs
• c) Structural Inspection, Systems Maintenance and Zonal Inspection Programs

Câu 53: Before the bending the outer, inner and neutral fibre have the same length. After the bending the outer fibre is elongated and the inner fibre is …......

• a) Compressed
• b) Extended
• c) Not change

Câu 54: When measuring high currents, the devices is connected in

• a) Series
• b) Parallel
• c) Perpendicular

Câu 55: About spring back. The spring back factor:

• a) Allows you to determine the bend’s actual inside radius
• b) Tells you how far past 90 degrees you need to bend to compensate for spring back
• c) Helps predict spring back.

Câu 56: Which one is the prime concern between the lateral and longitudinal balance?

• a) None
• b) Lateral
• c) Longitudinal

Câu 57: When the dimension is expressed as 20 (+0.025 and - 0.025), then the tolerance is

• a) 0.035
• b) 0.025
• c) 0.05

Câu 58: What is statement correct?

• a) The tensiometer is a precision instrument
• b) The tensiometer must be calibrated
• c) The tensiometer is a precision instrument and must be calibrated annually.

Câu 59: How does the aircraft operator ensure the effectivity of the maintenance procedures

• a) Base on daily notification of aircraft manufacturer.
• b) Continuously checking the maintenance schedule
• c) Aircraft operator don't need to ensure the effectivity of the maintenance procedures

Câu 60: Sliding bearings are resistant to push forces, they create a lot of noise

• a) They create very less noise
• b) Yes
• c) Depends on the application

Câu 61: D= +0.009 30mm -0.004. The tolerance is?

• a) 0.005 mm
• b) 0.013 mm
• c) 0.006mm

Câu 62: A period of time needed for cure of cold age-hardening epoxy adhesives

• a) 48 hours
• b) 72 hours
• c) 26 hours

Câu 63: Ultrasonic inspection is done in materials to determine

• a) Cracks below the surface
• b) Yiels strangth
• c) Ultimate tensile strangth

Câu 64: General visual inspection (GVI) is made from within?

• a) 200 cm
• b) 100 inch
• c) Touching distance unless otherwise specified

Câu 65: What is the max speed during normal towing by the tow bar tractor?

• a) 25 km/h
• b) 20 km/h
• c) 10 km/h

Câu 66: Who made the actual datum location?

• a) Manufacturer
• b) Pilot
• c) Engineer

Câu 67: What is primary function of wash primers FCR ( Filiform Corrosion Resistant ) in the outer structure?

• a) As adhesion contact and corrosion protection
• b) As adhesion contact
• c) As corrosion protection

Câu 68: The surface has always to be protected against any damages. Surface markings are only allowed to be made with

• a) A punch
• b) A soft lead pencil
• c) A pen

Câu 69: The condition of coaxial cable can be tested by

• a) Potentiometer
• b) Thyristor
• c) Impulse reflectometry tester

Câu 70: A/C can do weighing process at inside Hangar?

• a) Yes, with Hangar's doors opened
• b) No
• c) Yes, with all Hangar's doors closed

Câu 71: What is the most common bad-wetting material?

• a) Glass
• b) Mercury
• c) Copper

Câu 72: A tapered roller bearing is designed to take

• a) Axial loads only
• b) Both radial and axial loads
• c) Radial loads only

Câu 73: Refer to the repair classification and select the repair depending on the repair grade, What does the grade 1 mean?

• a) No repair is necessary (permitted damage).
• b) Permanent repair.
• c) A check of the repair is necessary at each C−check.

Câu 74: Adjust the distance between the bending line and the sheet edge via

• a) A square set
• b) A vernier calliper
• c) A angle meter

Câu 75: Basic empty mass includes Water portable, it is right?

• a) No
• b) Yes
• c) Not mentioned

Câu 76: The instrument used to measure external and internal diameter of shaft, thickness of parts and depth of holes, is

• a) Outside-Inside micrometer
• b) Vernier calliper
• c) Depth gauge micrometer

Câu 77: General visual inspection may require removal or opening of?

• a) Fairings
• b) Doors and fairings
• c) Access panels and doors

Câu 78: Types of riveted joints include?

• a) Lap Joint single shear, Butt Joint single shear, Butt Joint double shear.
• b) Butt Joint single shear, Butt Joint double shear.
• c) Lap Joint single shear, Butt Joint single shear.

Câu 79: Defining the minimum bend radius

• a) So it has to be checked before bending if the component is adequate, in regard to the material, the section, the bending radius and the bending angle. The guide is the minimum bend radius.
• b) The outside of the bend radius.
• c) Which means you use the smallest punch nose radius you have available to work with

Câu 80: What type of fit as below: HOLE with dimension diameter 30 MM, UPPER VIATION 0.09MM, LOWER VIATION -0.02MM. SHAFT with dimension diameter 29.8mm, UPPER VIATION 0.05MM, LOWER VIATION -0.06MM

• a) CLEARANCE FIT
• b) TRANSITION FIT
• c) INTERFERENCE FIT

Câu 81: Why is use rubber gloves and a respiratory protection required for mixing sealant

• a) Sealing compounds are dirty
• b) Sealing compounds are poisonous and can lead to personal injury
• c) Sealing compounds are sticky

Câu 82: What is primary function of wash primers FCR ( Filiform Corrosion Resistant ) in the interior structure?

• a) As corrosion protection
• b) As adhesion contact
• c) As adhesion contact and corrosion protection

Câu 83: How to know the solder connection area is clean

• a) No visible signs of residual flux remain
• b) Hold tightly in hand
• c) Can rework properly

Câu 84: The regular maintenance carried out is based on the documents issued by the aircraft and equipment manufacturers. They can be as follow:

• a) Maintenance Review Board Report (MRBR) and Maintenance Planning Data (MPD)
• b) Maintenance Review Board Report (MRBR), Maintenance Planning Data (MPD) and Regulatory Requirements
• c) Maintenance Review Board Report (MRBR), Maintenance Planning Data (MPD), Maintenance Organization Exposition (MOE) and Regulatory Requirements

Câu 85: The least count of a Vernier calliper is

• a) 0.01 mm
• b) 0.001 mm
• c) 0.02 mm

Câu 86: Which type personnel protective equipment is recommended for use, to handle loads with rough surfaces and jagged edges?

• a) Leather gloves
• b) Paper gloves
• c) Polythene gloves

Câu 87: The standard views in the European drawings are

• a) Front view, side view and top view
• b) Top view, left side view and right view
• c) Top view, left side view and rear view

Câu 88: What is the minimum rivet upset for nominal 4mm ( 0.157 in.) diameter rivet ( applicable 2017A, 2024,2117, 7050, 3.1124 and 3.1324 rivets )?

• a) 5mm ( 0.157 in.)
• b) 7.3mm ( 0.287 in.)
• c) 6mm ( 0.236 in.)

Câu 89: D= +0.009 30mm -0.004. The upper limit is?

• a) 30.009 mm
• b) 30.004 mm
• c) 29.006 mm

Câu 90: What can affect the amount of the backlash in a pair of mating gears

• a) Changes in centre distance; variance in tooth thickness; temperature ranges
• b) Temperature ranges only
• c) Variance in tooth thickness only

Câu 91: What is interference fit?

• a) The difference between the diameters of a shaft and a hole if the hole diameter is larger then the shaft diameter
• b) The difference between the diameters of a shaft and a hole if the shaft diameter is larger then the hole diameter
• c) The upper limit of diameter of shaft is lower than the lower limit of diameter of hole in the production

Câu 92: Wet Installation for rivet with Protruding head means:

• a) Apply sealant to the underside of the head 10 minutes prior to installation
• b) Apply sealant to the aboveside of the head immediately prior to installation
• c) Apply sealant to the underside of the head immediately prior to installation

Câu 93: Installed cable lines have to be tightened to a certain tension depending on

• a) Location only
• b) Purpose only
• c) Cable lines's location and purpose

Câu 94: Use a lead pencil on titanium

• a) Prohibited
• b) Optional
• c) Using with carefully instructions

Câu 95: The removal of rivets is described in SRM chapter:

• a) SRM chapter 51-43
• b) SRM chapter 51−40
• c) SRM chapter 53-40

Câu 96: A file removes the metal during

• a) Return stroke
• b) Both forward and return strokes
• c) Forward stroke

Câu 97: When using a current clamp meter, which method can be used to measure direct current?

• a) Classic method
• b) Hall effect sensor method
• c) Measuring with a coil

Câu 98: What are suitable abrasives for steel/ titanium corrosion removal

• a) Carbon silicide in green- blue colour
• b) Aluminium oxide in brown red colour
• c) Aluminium oxide in green colour

Câu 99: Where can we find the specifications for air data systems?

• a) FAR 25.1325 as well as in the FAR 43 Appendix E
• b) Technical Logbook
• c) AMM

Câu 100: About Folding Machine. The edge rail:

• a) Holds the sheet between the adjustable clamping bar and the fixed lower leaf.
• b) Carries the radius bar
• c) Moves the sheet around the radius of the radius bar

Câu 101: On large A/C (B747), How many method (ways) are used to level A/C?

• a) 1
• b) 2
• c) 3

Câu 102: Which is explosive hazard?

• a) Physical hazard
• b) Chemical hazard
• c) Mechanical hazard

Câu 103: Cracks are NOT permitted in the upset heats rivet?

• a) Aluminum or monel rivets
• b) Titanium or monel rivets
• c) Titanium or Aluminum rivets

Câu 104: What type of fit as below: HOLE with dimension diameter 30 MM, UPPER VIATION 0.09MM, LOWER VIATION -0.02MM; SHAFT with dimension diameter 30MM, UPPER LIMIT 0.01MM, LOWER LIMIT -0.05 MM

• a) CLEARANCE FIT
• b) TRANSITION FIT
• c) INTERFERENCE FIT

Câu 105: How is a corrosion area on a metallic surface looked like

• a) Dulled area
• b) Darkened area
• c) A dulled or darkened area; white, grey or red dust or particles may also be observed.

Câu 106: How to bend the insulated terminal for installation in restricted spaces?

• a) A maximum angle is 90 degrees
• b) A maximum angle is 60 degrees
• c) A maximum angle is 30 degrees

Câu 107: Installation type of Flush Head Fastener

• a) 100 degree countersink
• b) 90 degree countersink
• c) Normally a 100 degree countersink is used, but there can be exceptions depending on the fastener.

Câu 108: Which of this is not an anti friction bearing?

• a) Solid bearing
• b) Ball bearing
• c) Roller bearing

Câu 109: Bending Process. It is advisable to perform straight line bending at a constant and …....... speed to enable the material to flow, without a damage of the material

• a) Slow
• b) Fast
• c) Moderate

Câu 110: In marking a light alloy.

• a) A pencil is used to mark the material and all marks removed after bending.
• b) The scriber must be held at an angle to give a smooth line where bending is required.
• c) Caustic soda is used.

Câu 111: Which of the following can be used with vacuum bagging to hold the heat directly onto the surface.

• a) Heat Lamps
• b) Heating Blankets
• c) Heat Guns

Câu 112: Two methods of paint removal are possible

• a) Mechanical and chemical
• b) Mechanical and electrical
• c) Chemical and electrical

Câu 113: Following is (are) the reinforcement form of composites

• a) Fibre reinforced composites only
• b) Laminar composites only
• c) Fibre reinforced composites and laminar composites

Câu 114: Application of a visual Examination is only suitable for

• a) Surface damages
• b) Defects which move to the parts surface
• c) Surface damages or defects which move to or along the parts surface

Câu 115: How to calculate the bolt and pin hole pitch value?

• a) 4−5 times the rivet diameter
• b) 4−5 times the rivet length.
• c) 4−6 times the rivet diameter.

Câu 116: A term used to describe the ability of an ultrasonic testing system to distinguish between the entry surface response and the response of discontinuities near the entry surface is:

• a) Sensitivity
• b) Resolution
• c) Penetration

Câu 117: Short wavelength electromagnetic radiation produced during the disintegration of nuclei of radioactive substances is called:

• a) X-Radiation
• b) Scatter radiation
• c) Gamma radiation

Câu 118: The rivet length allowance depends on

• a) Head of rivet
• b) Rivet material
• c) Rivet diameter

Câu 119: The selection of rivets with regard to material, head and diameter is affected by which of the following factors?

• a) Material type of the to be connected elements, Amount of transmitted loads, Material thickness of the structural element
• b) Material type of the to be connected elements, Installation location of the component, Amount of transmitted loads, Material thickness of the structural element
• c) Material type of the to be connected elements, Installation location of the component, Material thickness of the structural element

Câu 120: Depending on the application, the joined components are produced with a specific clearance or interference. Therefore it is made a difference between the types of fits:

• a) Interference fit, clearance fit, transition fit
• b) Interference fit, transition fit
• c) Clearance fit, transition fit

Câu 121: The use the mechanical method (e.g. grinding) is suitable where

• a) The corrosion covers a large area
• b) The corrosion is heavy and covers a large area
• c) The corrosion is light and contained within a small area

Câu 122: Which type of fire extinguisher suitable for Class "A" fire?

• a) Dry powder
• b) Foam and water
• c) Halon

Câu 123: The spring tension should then be within the limits given in the manufacturers datasheet. If a spring is out of limit, the spring has to be

• a) Replaced
• b) Adjusted
• c) Repaired

Câu 124: ses/Main Groups of structural Damage

• a) Mechanical only
• b) Mechanical, Chemical/electrochemical, Thermal, Inner metallurgical characteristics.
• c) Thermal only

Câu 125: What is tolerance?

• a) The difference between these high and low limits of size
• b) The difference from zero value to highest value
• c) The difference from the lowest value to zero value

Câu 126: The Edge Margin/Edge Distance for the solid rivets hole edge distance values are from the centre of one fastener hole to the nearest edge of the component. How to calculate them?

• a) Normally 2 to 2,5 times the rivet diameter.
• b) Normally 2 to 2,2 times the rivet diameter.
• c) Normally 3 to 4 times the rivet diameter.

Câu 127: What is Function of Flux?

• a) The Flux supports the melting and bonding process of solder and base material during the soldering process.
• b) The Flux supports the reduced temp and bonding process of solder and base material during the soldering process.
• c) Flux supports the rapid cooling of articles and facilities during welding.

Câu 128: What must be checked before sealing compound mixing process

• a) The activator and the base compound is not over-aged
• b) The activator and the base compound is not over-aged and from the same repair kit or batch
• c) The activator and the base compound is not from the same repair kit or batch

Câu 129: What does "NDT" stand for

• a) Non-driving test
• b) Non-destructive test
• c) Non-dry test

Câu 130: Bend radius on sheet metal is

• a) Inside radius + ½ thickness.
• b) Outside radius.
• c) Inside radius.

Câu 131: With modern airplanes, does the lubricant consumption affected to change of mass or CG during the flight?

• a) Yes
• b) No
• c) Not mentioned

Câu 132: Scribing block is used to

• a) Hold the round bars during marking
• b) Check the trueness of flat surfaces
• c) Locate the centres of round bars

Câu 133: Hot gas area are?

• a) Engines, Pylons/Struts, APU Compartments, Air-condition Bay, Front Spar and everywhere where bleed ducts are located
• b) Engines, APU Compartments, Air-condition Bay, Front Spar and everywhere where bleed ducts are located
• c) Engines, Pylons/Struts, APU Compartments, Front Spar and everywhere where bleed ducts are located

Câu 134: What is Airbus three layer system

• a) Topcoat, wash primer and pretreatment
• b) Topcoat, primer and pretreatment
• c) Topcoat, primer, wash primer and pretreatment

Câu 135: How can we know shortened coaxial wire during test

• a) A negative impulse is reflected.
• b) A reflection with the same polarity as the input impulse indicates an open line
• c) Afaultless line with correct terminating resistance will not cause any reflections.

Câu 136: Fitted hoses must meet the following requirements:

• a) Tensile stress on the fittings is permitted.
• b) They must twist when the end-fittings are tightened.
• c) Tensile stress on the fittings is not permitted and they must not twist when the end-fittings are tightened

Câu 137: When a piece of metal is bent, the surface of the metal on the outside of the bend is.

• a) In compression
• b) Neither in tension or in compression
• c) In tension

Câu 138: If the chain is worn so that the links are loose and can be lifted away from the wheel teeth, it should be removed and checked for

• a) Excessive elongation
• b) Excessive tension
• c) Excessive twist

Câu 139: Generally all types of damages are checked for, but essentially the main types of defect being inspected for are:

• a) Corrosion and metal fatigue
• b) Crack
• c) Metal fatigue only

Câu 140: During the hot bonding process, Overheating can also result

• a) Debonding only
• b) Delamination only
• c) Debonding and delamination

Câu 141: Where is the tension of the chain performed at

• a) Turnbuckles
• b) Screwed end connectors
• c) Turnbuckles and screwed end connectors

Câu 142: For detailed inspection aids such mirrors, magnifying lenses, etc. may be used and what may be required else?

• a) Surface cleaning only
• b) Elaborate access only
• c) Surface cleaning and elaborate access

Câu 143: Mix the sealing compound in a well ventilated room because

• a) Sealing compounds are poisonous
• b) Most sealing compounds are highly flammable in the unmixed form
• c) Most sealing compounds are highly flammable in the unmixed form, Sealing compounds are poisonous

Câu 144: A hot patch bonding machine performs the following function:

• a) It applies pressure
• b) It applies heat
• c) It applies pressure and heat

Câu 145: When operating Air Data Test process, which function will be allowed?

• a) Altitude/ air speed specifications
• b) Flap/Slat operation
• c) RAT test

Câu 146: Which factor damages the conductor material in aircraft wiring?

• a) High voltage lead to high heat
• b) Lightning strike
• c) Vibration or frequent bending (doors/panels)

Câu 147: Where you can find the W & B limitation?

• a) MEL
• b) FCOM
• c) AOM

Câu 148: During taxi in Maintenance area, do we need a headset man to communicate to pilot?

• a) Yes
• b) No
• c) Wing walker do

Câu 149: What makes embrittlement in nickel and certain nickel alloys?

• a) Subject to the cold air
• b) In contact with acid
• c) Heated in the presence of sulphur or substances containing sulphur.

Câu 150: Which document specifies limits of remained thickness of component after corrosion removal?

• a) SRM
• b) CDL
• c) CDL and SRM

Câu 151: Avoid the Overweight landing, what procedures captain will do first?

• a) Request divert and Landing at bigger airport
• b) Dump Fuel
• c) Request emergency fire car

Câu 152: A chain drives is used for

• a) A short distances between the connected axes exist
• b) A medium distances between the connected axes exist
• c) A large distances between the connected axes exist

Câu 153: Which equipment may be required to gain proximity to the area being checked

• a) Seat
• b) Stands, ladders, platforms
• c) Table

Câu 154: Adjustment of the Punch, proceed as follows:

• a) 1. Set in the rivet set with the locking feather into the rivet gun and lock the feather; 2. Slowly pull the trigger entirely and at the same time adjust the punch to the desired level with the controller.
• b) 1. Set in the rivet set with the locking feather into the rivet gun and lock the feather; 2. Connect the rivet gun to the air source and put it perpendicular on a wooden plate.
• c) 1. Set in the rivet set with the locking feather into the rivet gun and lock the feather; 2. Connect the rivet gun to the air source and put it perpendicular on a wooden plate; 3. Slowly pull the trigger entirely and at the same time adjust the punch to the desired level with the controller.

Câu 155: Paint bulging, paint peeling and a bulging in a gap between adjacent components are signs of

• a) Corrosion
• b) Paint damage
• c) Sealant damage

Câu 156: Tube line must not be bent back for correction

• a) TRUE
• b) FALSE
• c) Depends on the application

Câu 157: How many types of fit does the components joined together?

• a) 2
• b) 3
• c) 4

Câu 158: How to calculate the rivet diameter?

• a) Rivet diameter of 2,5−4 times the thinnest sheet thickness is selected.
• b) Rivet diameter of 4−5,5 times the thinnest sheet thickness is selected.
• c) Rivet diameter of 4,5−6 times the thinnest sheet thickness is selected.

Câu 159: The standard views in the American drawings are

• a) Top view, left side view and right view
• b) Top view, left side view and rear view
• c) Front view, side view and top view

Câu 160: Load capacity includes Pax, Pilots,…, it is right?

• a) No
• b) Yes
• c) Not mentioned

Câu 161: What is stand for MAC?

• a) Measure Air Condition
• b) Mean Aerodynamic Chord
• c) Moment of Aircraft

Câu 162: What differentiate the soldering types?

• a) Working temperature
• b) Voltage applied
• c) Material

Câu 163: To ensure that pipe and hose assemblies do not leak due to loose connections

• a) Position the torque wrench on the sleeve nut
• b) Position the countertorque wrench on the fitting
• c) Position the torque wrench on the sleeve nut and Position the countertorque wrench on the fitting

Câu 164: Why must the repaired surface be absolutely clean and degreased before applying new sealant

• a) Due to providing a good adhesion of the new sealant
• b) Due to inspection easier
• c) Due to tack time shorter

Câu 165: The least bend radius varies depending on

• a) Material and thickness of plate only
• b) Direction of plate only
• c) Material and thickness of plate and direction of plate

Câu 166: Purpose of checks after corrosion removal?

• a) Complete corrosion removal,
• b) Hidden corrosion
• c) Complete corrosion removal, hidden corrosion, potential paths of cracks and remaining thickness

Câu 167: Sealant removal or cutting tools should be made of

• a) Hardwood, plastic
• b) Hard materials and hard metals
• c) Plastic and hard metals

Câu 168: To tighten the bolts and nuts with a specified torque which of the following tool is used

• a) Speed handle
• b) Ratchet
• c) Torque wrench

Câu 169: All materials of a flammable nature (dope, thinners, paint and other solvents) should be stored in

• a) Out side
• b) Special rooms
• c) Optional place

Câu 170: Which is the most important thing have to care during taxi

• a) Hazard zone
• b) Wing walkers
• c) Headset man

Câu 171: Where you can find the empty weight CG?

• a) AMM
• b) WBR
• c) LMM

Câu 172: Steps of hand mix process generally

• a) Stir accelerator thoroughly, add the entire accelerator to the base container and mix thorough until a uniform blend
• b) Stir accelerator thoroughly, add the entire base to the accelerator container and mix thorough until a uniform blend
• c) Put the entire accelerator to the base container and mix thorough

Câu 173: Where are corrosion inhibitors applied:

• a) Electrical connections, oxygen component
• b) Silicon parts, piston rods
• c) Landing gear well, under cargo floor interior

Câu 174: What chapter you find out related information after lightning strike?

• a) Chapter 27
• b) Chapter 5
• c) Chapter 32

Câu 175: During repair of damaged sealant why remaining sealant to be tapered

• a) The tapered surface allows a good adhesion of the new sealant
• b) The tapered surface requires less quantity of the new sealant
• c) The tapered surface requires less time

Câu 176: Oxides from which materials are hard to remove?

• a) Copper, aluminium, iron
• b) Titanium, chromium, maganese
• c) Silicon, iron, cadmium

Câu 177: What are type of pretreatment on steel alloys

• a) Cadmium plating, hard chromium or-nickel plating, phosphatisation
• b) Chromic or sulphuric anodizing
• c) Chemical conversion coating

Câu 178: Serious corrosion have been found:

• a) Only in exposed parts of aircraft structures
• b) Only in closed parts of aircraft structures
• c) Both in closed and exposed parts of aircraft structures

Câu 179: When should chain assemblies be inspected for serviceability?

• a) Monthly
• b) At the relevant Maintenance Schedule
• c) Weekly

Câu 180: How much weight should be used when riveting 4 mm (5/32 inch ) diameter rivets?

• a) 0.75 to 1.5 kg
• b) 1.5 to 2 kg
• c) 2,25 to 3 kg

Câu 181: In drawing, simple symbols such as circles, pitch circles, triangles, squares etc. are used, and every single symbol represents for:

• a) One fastener type
• b) Diameter of fastener
• c) Material of fastener

Câu 182: For single A/C, how often a periodically weighing should be done?

• a) 3 years
• b) 4 years
• c) 5 years

Câu 183: Where are sealants used mainly on aircraft structure?

• a) On non pressurized area only
• b) On pressurized area only
• c) On non pressurized area, on pressurized area, on fuel tank area

Câu 184: Which metal or alloy properties are to be used as solder for soldering?

• a) It must melt and flow easily to ensure the distribution of the solder via capillary action
• b) Its composition must be homogeneous and stable to prevent the separation of solid and fluid parts whilst soldering
• c) It must melt and flow easily to ensure the distribution of the solder via capillary action. Its composition must be homogeneous and stable to prevent the separation of solid and fluid parts whilst soldering

Câu 185: Which of the following bearings carry thrust load in one direction?

• a) Spherical roller thrust bearings and Tapered roller bearings
• b) Spherical roller thrust bearings
• c) Tapered roller bearings

Câu 186: Precision measuring and test equipment must be

• a) Calibrated
• b) Cleaned
• c) Marked

Câu 187: At which angle are substances classified as substances with bad or no wetting ability?

• a) Opening angle less than 90 degree
• b) Opening angle more than 120 degree
• c) Opening angle at 180 degree

Câu 188: How can "velocity factor" be defined?

• a) The relation between the speed of light and current
• b) The relation of the propagation speed to the speed of light
• c) The relation between the speed of light and voltage

Câu 189: What are Aids for Visual Examination?

• a) Torches only
• b) Torches, Mirrors, Loupes, Borescope/Endoscope
• c) Borescope/Endoscope only

Câu 190: Overheating Symptoms are discolouration of the rings, balls and cages from

• a) Gold to blue
• b) Blue to gold
• c) Blue to red

Câu 191: Which is considered as inert gases?

• a) Hydrogen, Oxygen, CO2
• b) Argon, Helium, Nitrogen
• c) Argon-Helium, Argon-CO2

Câu 192: Any fasteners located within the area of corrosion and affected by the corrosion must be

• a) Removed
• b) Not removed
• c) Removed if its head paint damaged

Câu 193: Which type of stress often occur if shafts and bearings absorb and transmit loads through the flight operation?

• a) WEAR
• b) TENSION
• c) BEARING

Câu 194: Which characteristics of corrosion inhibitors are important for their effectiveness:

• a) A good wetting ability only
• b) Penetrating properties
• c) A good wetting ability and penetrating properties

Câu 195: When bending titanium it is even necessary to …..... the edges of the sheet, because otherwise cracking may occur at the bending radius area.

• a) Cut
• b) Saw
• c) Polsh

Câu 196: For transmitting light loads over short distances, which cable system is used for?

• a) Bowden control systems
• b) Teleflex control systems
• c) Teleflex control and bowden control systems

Câu 197: Tap-testing is widely used for the quick evaluation of any accessible aircraft surfaces to detect presence of

• a) Debonding only
• b) Entrapped water
• c) Debonding and delamination

Câu 198: Who issued TCDS (Type Certificate Date Sheet)?

• a) Manufacturer
• b) FAA
• c) Operator

Câu 199: The forming of the upset head also the hitting time is important for the later lifetime of the rivet joint noticed in the Airbus SRM?

• a) Upset head in 3−4 sec. is optimal, but has to be finished not later than 7 sec.
• b) Upset head in 3−4 sec. is optimal, but has to be finished more than 7 sec.
• c) Upset head in 3-4 sec. is optimal, but has to be finished not later than 10 sec

Câu 200: What is upper limit?

• a) The highest allowed size in the production. You can calculate it from the basic size and the upper deviation
• b) The lowest allowed size and can be calculated from the basic size and the lower deviation
• c) Is calculated by the base line and the tolerance

Câu 201: Ultrasonic Testing, the time delay of the reflected pulse is related to the depth of defects in:

• a) The composite part
• b) The metal part
• c) The wood part

Câu 202: All cables in an aircraft, especially control cables, require careful inspection at

• a) Airlines request
• b) Pilots request
• c) Regular intervals

Câu 203: The feeler gauge is used to measure …....between the mating parts

• a) Step
• b) Space
• c) Gap width and clearance

Câu 204: For soft materials, the hacksaw blade shol have …......teeth per 25 mm

• a) 14
• b) 24
• c) 32

Câu 205: What does the maintenance schedule specify

• a) Maintenance requirements for the aircraft as well as the maximum operating hours for aircraft components as required by regulatory authorities
• b) Maintenance requirements for the aircraft
• c) Maximum operating hours for aircraft components as required by regulatory authorities

Câu 206: The minimum temperature for brazing high temperature solder material is

• a) 950
• b) 500
• c) 750

Câu 207: The bend allowance (V) is changed by influencing factors:

• a) Only the Bend radius R, Material thickness S
• b) Only material thickness S, Bending angle α
• c) The Bend radius R, Material thickness S, Bending angle α

Câu 208: Which type of line in Engineering drawing show the Hidden outlines and edges

• a) Chain (thin)
• b) Dashed (thin)
• c) Continuous (thin)

Câu 209: What is the max speed during normal towing by the towbarless tractor?

• a) 25 km/h
• b) 32 km/h
• c) 10 km/h

Câu 210: Any cleaning fluids used should have been approved by?

• a) Technical department
• b) Base maint. center
• c) The aircraft constructor

Câu 211: The springs are commonly used for the same purpose in motor cars, as are leaf springs that consist of flat bars clamped together

• a) Disk springs
• b) Balancing springs
• c) Coil springs

Câu 212: Bearing defects and their causes, what are symptoms of tight fits?

• a) Bent shafts
• b) Outer ring slippage caused
• c) Discoloured, wide ball path at bottom of raceways

Câu 213: What is clearance fit?

• a) The difference between the diameters of a shaft and a hole if the hole diameter is larger then the shaft diameter
• b) The difference between the diameters of a shaft and a hole if the shaft diameter is larger then the hole diameter
• c) The upper limit of diameter of shaft is higher than the lower limit of diameter of hole in the production

Câu 214: For cleaning the use of air jets should be:

• a) Avoided
• b) Mandatory
• c) Recommended

Câu 215: Why does sealant ( sealing compound ) prevent corrosion on aircraft structure

• a) Working like corrosion inhibitor
• b) Filling of gaps between riveted or bonded parts, to prevent the penetration of moisture and therefore corrosion
• c) Working like temperature insulating material

Câu 216: After severe or unusual Turbulence happened, which task you have to perform?

• a) The structural inspection
• b) Electrical Ops. Test
• c) Steering ope. Test

Câu 217: All affected sealings in paint stripping area must be

• a) Inspected
• b) Repainted
• c) Renewed

Câu 218: What is important for heavy corrosion removal by wire brushing on aluminium components

• a) The wires have to be made out of corrosion resistant steel (CRES) and a grinding rework must be performed after brushing
• b) A grinding rework must be performed after brushing
• c) A grinding rework must be performed after brushing

Câu 219: Edge Margin is the distance between?

• a) Distance between rivet centre and the element’s edge.
• b) Distance between rivets rows
• c) Distance between rivets and edge of the element

Câu 220: The strength of a riveted joint compared to that of the original metal is ( three-row joint the inner row)?

• a) 20% of the load
• b) 40% of the load
• c) 50% of the load

Câu 221: Bending of the first 90° Bend, If the tube is aligned, the tube is pulled with a constant force by the swivel handle around the form wheel until the 0° marking of the guide matches with …...... marking of the form wheel

• a) The 45°
• b) The 90°
• c) The 60°

Câu 222: Cartridge Hand Mixing requires

• a) Rotating dasher rod 90° in a spiral clockwise motion with each stroke
• b) The total number of 50 strokes
• c) The total number of 50 strokes and rotating dasher rod 90° in a spiral clockwise motion with each stroke

Câu 223: The strength of a riveted joint compared to that of the original metal is (two-row lap joint)?

• a) 20% of the load
• b) 40% of the load
• c) 50% of the load

Câu 224: The Cable tension values to be adjusted for the individual aircraft types are specified in

• a) The respective Cables Manufacture
• b) The respective AMMs
• c) The respective CMMs

Câu 225: Preparation before weighing, which are the environment conditions require?

• a) Clean and dry
• b) Clean and clear
• c) Clean only

Câu 226: What are symptoms of corrosion?

• a) Red/brown areas on balls only
• b) Cages or bands of ball bearings only
• c) Red/brown areas on balls; and cages or bands of ball bearings

Câu 227: Where is MAC located?

• a) Parallel to the longitudinal axis
• b) Parallel to the vertical axis
• c) Vertical to the wings

Câu 228: Springs are elastic devices variously used for

• a) Storing and furnishing energy; Creating shocks
• b) Sustaining the pressure between contacting surfaces; Extending tensional or compressional stress
• c) Storing and furnishing energy; Absorbing shocks and Sustaining the pressure between contacting surfaces; Resisting tensional or compressional stress

Câu 229: The clamps most commonly-encountered are

• a) The metal cushioned clamps
• b) The nylon clamps
• c) The rubber cushioned clamps and the plain clamps

Câu 230: What is the type of explosive hazard in workshop?

• a) Oils
• b) Greases
• c) Oxygen systems

Câu 231: Which of the these optical aids can be used in direct visual examination?

• a) Cameras
• b) Mirrors
• c) Optical tool (rigid or flexible)

Câu 232: What is the cause for electric fire?

• a) Rated fuse
• b) Tight wire connection
• c) Over loaded circuits

Câu 233: What is the type of fire with flammable liquids, oil and grease?

• a) Class - C
• b) Class - A
• c) Class- B

Câu 234: How does curing time of primers FCR ( Filiform Corrosion Resistant ) change when temperature increases?

• a) Decreases
• b) Increases
• c) Does not change

Câu 235: How many basic types of anti−friction bearings

• a) 3
• b) 4
• c) 5

Câu 236: A suspected chemical spillage on a cable, you should

• a) Replace the cable
• b) Clean the cable and inspect 24 hours later
• c) Clean, inspect and refit immediately

Câu 237: When install Hi-lock, how to calculate the length of Hi Lok/Hilite?

• a) Body shank of rivet with type universal head, head and body shank of rivet with CSK
• b) Body shank and thread of rivet
• c) Body shank, thread and diameter of rivet

Câu 238: In resistance brazing, how is the heat taken from?

• a) Created by electrical resistance of the soldering area in the electrical circuit
• b) The voltage applied through the circuit
• c) By the potential difference

Câu 239: On which metal component is found red iron rust

• a) Carbon steel
• b) Stainless steel and nickel chromium alloys
• c) Stainless steel

Câu 240: Who calculate the length of the MAC?

• a) Engineer
• b) Manufacturer
• c) Operator

Câu 241: The temperature for soft soldering can not exceed

• a) 450 degree Celsius
• b) 550 degree Celsius
• c) 750 degree Celsius

Câu 242: Where does mixing of sealing compound take a place

• a) A well ventilated room
• b) Inside the airplane
• c) Any place

Câu 243: What are used as heat sources for soldering process of infrared brazing?

• a) Batteries
• b) Magnets
• c) Quartz lights

Câu 244: In case of clearance fit, what is minimum clearance is

• a) In case of clearance fit, what is minimum clearance is (page 4)
• b) Result through a combination of upper limit diameter shaft and lower limit diameter hole.
• c) The difference between the diameters of a shaft and a hole if the shaft diameter is larger then the hole diameter

Câu 245: Bending by hammering, The application area is mostely limited to

• a) Thin sheets and soft materials.
• b) Soft materials.
• c) Thin sheets

Câu 246: Fibre Reinforced Composites are composed of fibres embedded in …....... material

• a) Matrix
• b) Plastic
• c) Metallic

Câu 247: What is tool for testing crimping tool?

• a) Hydraulic crimping tool
• b) Go/No-go testing tool
• c) Turret

Câu 248: The wheel or pulley mountings should be examined to ensure that

• a) The wheels or pulleys are firmly loosen to the shafts or spindles
• b) They are not correctly located and running freely
• c) They are firmly secured to the shafts or spindles and correctly located and running freely

Câu 249: The bend allowance (V) is negative, if the bending angle is:

• a) Α“ = 0° upto 115°
• b) Α“ = 115° upto 145°
• c) Α“ = 115° upto 180°

Câu 250: If the CG is too far aft (behind the stability limit of the aircraft manufacturer), what happen?

• a) Nothing
• b) A/C still Balance
• c) Unstable related to the lateral-axis

Câu 251: Which of the following require heat to cure the composite

• a) Glass fibre
• b) Resin and hardener
• c) Aramid fibre

Câu 252: Types of Damages at Composite Structures

• a) Scratch, crack, debonding, abrasion, burn mark
• b) Scratch, crack, dent, corrosion, gouge, nick
• c) Scratch, crack, dent, corrosion, delamination

Câu 253: How to bend the insulated terminal for installation on a terminal block?

• a) A maximum angle is 90 degrees
• b) A maximum angle is 60 degrees
• c) A maximum angle is 30 degrees

Câu 254: Why are sealants used on the aircraft exterior?

• a) Sealing the wing
• b) Smoothing in order to increase the aerodynamic performance of wings or fuselage
• c) Sealing the fuselage

Câu 255: How long is a storage time of sealant e.g. PR 1422

• a) 6 months in the original packing under temperatures of 26C
• b) 6 months under temperatures of 18C
• c) 12 months

Câu 256: Which statement is correct?

• a) Check no broken wires, move a cloth along the cable, in two directions.
• b) Check no broken wires, make a special inspection to find the broken wires
• c) Check no broken wires, move a plastic along the cable, in any direction.

Câu 257: What type of spring is used for stores energy?

• a) A helical (or coil) spring
• b) A torsion spring
• c) A disk spring

Câu 258: Refer to the repair classification and select the repair depending on the repair grade, What does the grade 3 mean?

• a) No repair is necessary (permitted damage).
• b) Temporary repair only, replace with new wire in accordance with the basic definition within 20 months but preferably at subsequent C check.
• c) A check of the repair is necessary at each C−check.

Câu 259: When working with composite materials, where is the correct safety precautions on

• a) Vendor website
• b) Material safety data sheets
• c) Vendor Information

Câu 260: Who will state the "velocity factor"?

• a) Aircraft manufacturer
• b) CRS B Engineer
• c) Cable Manufacturer

Câu 261: What type of fit as below: HOLE with dimension diameter 30 MM, UPPER VIATION 0.06MM, LOWER VIATION -0.02MM; SHAFT with dimension diameter 30.5MM, UPPER VIATION 0.08MM, VIATION LIMIT 0.02 MM

• a) CLEARANCE FIT
• b) TRANSITION FIT
• c) INTERFERENCE FIT

Câu 262: What are functions of anodizing process on aluminium alloys

• a) To increase the corrosion resistant properties of the metal and to give a good surface for the adhesion of the subsequent paint coats
• b) To give a good surface for the adhesion of the subsequent paint coats
• c) To give a good surface for the adhesion of the subsequent paint coats

Câu 263: What is Boeing two layer system

• a) Primer and wash primer
• b) Topcoat and pretreatment
• c) Topcoat, primer and pretreatment

Câu 264: The mass of the dolly depends on the following factors:

• a) The rivet diameter and the rivet material
• b) The rivet diameter and the rivet length.
• c) The rivet length and the rivet material

Câu 265: Main types of damage in roller chain are

• a) Cracks and wear
• b) Corrosion and pitting
• c) Cracks; wear; corrosion and pitting

Câu 266: What chapter you will find out some abnormal events happen?

• a) Chapter 5
• b) Chapter 7
• c) Chapter 10

Câu 267: In case of clearance fit, what is maximum clearance is

• a) Result if a shaft at the lower limit diameter is joined with a hole at the upper limit diameter
• b) Result through a combination of upper limit diameter shaft and lower limit diameter hole.
• c) The difference between the diameters of a shaft and a hole if the shaft diameter is larger then the hole diameter

Câu 268: How do the wetting ability and therefore the adhesion of sealant change during tack free time

• a) Both start to decrease
• b) Both start to increase
• c) The adhesion increases

Câu 269: The process of removal rivets follows the following steps:

• a) Step 1: Drill heat only as for as shown below in dotted line. Step 2: Center punch rivet heat to provide location for drill tip. Step 3: Remove the heat of the rivet with a tight-fitting parallel drift which is moved at an angle to one side. Step 4: Remove the remainder of the rivet with the parallel drift used before.
• b) Step 1: Center punch rivet heat to provide location for drill tip. Step 2: Drill heat only as for as shown below in dotted line. Step 3: Remove the remainder of the rivet with the parallel drift used before. Step 4: Remove the heat of the rivet with a tight-fitting parallel drift which is moved at an angle to one side.
• c) Step 1: Center punch rivet heat to provide location for drill tip. Step 2: Drill heat only as for as shown below in dotted line. Step 3: Remove the heat of the rivet with a tight-fitting parallel drift which is moved at an angle to one side. Step 4: Remove the remainder of the rivet with the parallel drift used before.

Câu 270: Why are some component of stainless steel and nickel chromium alloys painted?

• a) Due to corrosion protection
• b) Due to matching colour schemes of the surrounding structure
• c) Due to identification

Câu 271: Refer to the repair classification and select the repair depending on the repair grade, What does the grade 2 mean?

• a) No repair is necessary (permitted damage).
• b) Permanent repair.
• c) A check of the repair is necessary at each C−check.

Câu 272: Teleflex control system, the cable is designed for transmitting both pull and push. How many type of cable in use?

• a) 1
• b) 2
• c) 3

Câu 273: Before bending of tube, it is advised that the tube’s pre-cut is …...... the desired length

• a) The same
• b) Shorter than
• c) Longer than

Câu 274: To find out the CG, A/C must be …

• a) Level
• b) Jack at both Main LDGs
• c) In Flight

Câu 275: Hose Installation IAW AMM A380, Minimum distance between hose and structure:

• a) 6 mm
• b) 12 mm
• c) 18 mm

Câu 276: When Checking Springs for Wear, the special care should be given to

• a) The hooks where they connect to their mounting points
• b) The tension of springs
• c) The extension springs

Câu 277: Can you find out some parameters for weighing in TCDS?

• a) No
• b) Yes
• c) Only CG range

Câu 278: What is transition fit?

• a) This is a range of fits which can be either clearance or interference. Here the tolerance fields of hole and shaft are overlapping
• b) In this assembly there is a space between the two parts, e.g. bearings
• c) The upper limit of diameter of shaft is lower than the lower limit of diameter of hole in the production

Câu 279: Which is the main cause of A/C damage after bird strike?

• a) Altitude
• b) Wind
• c) High speed of A/C

Câu 280: How many types of pressure seals are used?

• a) 1
• b) 2
• c) 3

Câu 281: The strength of a riveted joint compared to that of the original metal is ( three-row joint the outer rows)?

• a) 20% of the load
• b) 40% of the load
• c) 50% of the load

Câu 282: Cleaning of contaminated Cables, What is statement correct?

• a) Possible pollution on cable lines must only be removed with a clean and dry cloth.
• b) Possible pollution on cable lines must only be removed with degreasing
• c) Possible pollution on cable lines must only be removed with solvent agents

Câu 283: When installing a bonded clamp, ensure any paint or anodizing is …....... from the line where the clamp is fitted for electrical continuity

• a) Removed
• b) Covered
• c) Restored

Câu 284: For weight and balance, which one is the most important parameter?

• a) Speed
• b) CG
• c) Strength of materials

Câu 285: The margin between the rivet and the edge of the element has a major influence on the fatigue strength of the riveted joint as recorded in which of the following documents?

• a) IPC Chapter 51
• b) AMM Chapter 51
• c) SRM Chapter 51

Câu 286: In sheet metal bending, how would you measure the bend radius to calculate the bend allowance?

• a) Measure to the outside of the bend radius.
• b) Measure to the inside of the bend radius.
• c) Measure to the inside of the bend radius plus half the metal thickness.

Câu 287: Types of Damage at metal Structures

• a) Scratch, crack, dent, corrosion, debonding
• b) Scratch, crack, dent, corrosion, gouge, burn mark
• c) Scratch, crack, dent, corrosion, delamination

Câu 288: Corrosion removal grinding tools on aluminium components can be identified by:

• a) Their black colour
• b) Their red-brown colour
• c) Their blue colour

Câu 289: The bend radius required increases when the hose has to carry out movements in the operating condition

• a) TRUE
• b) FALSE
• c) Depends on the application

Câu 290: Borescope are typically use in

• a) Remote visual examination
• b) Translucent visual examination
• c) Direct visual examination

Câu 291: A flux is used in soldering to

• a) Etch the metal surface for more adhesion
• b) Remove or dissolve unwanted oxides or residues
• c) Prevent corrosion

Câu 292: What is function of a turnbuckle?

• a) To replace the cable
• b) To adjust the cable tension
• c) To examine and adjust the cable tension

Câu 293: How does corrosion inhibitor work?

• a) To make the surface in susceptible areas water-repellent
• b) To make the surface in susceptible areas cleaned
• c) To make the surface in susceptible areas water absorbing

Câu 294: Checking Elongation, if the extension is in excess of 2% on any section of the chain

• a) The specific section should be replaced
• b) The whole chain run should be replaced.
• c) The specific section should be adjusted

Câu 295: Defining the soak curing

• a) Once the repair has been heated that this temperature be held for a specific amount of time.
• b) Once the repair has been heated that the temperature be reached at a slow, constant rate of change from room temperature at 4°C per minute
• c) Once the repair has been heated that the temperature climbs are done in certain time intervals

Câu 296: After installation in the aircraft, the chains should be further

• a) Lubricated
• b) Cleaned
• c) Tensioned

Câu 297: What is mandatory/ important when using motor driven grinding wheels for corrosion removal on aluminium components

• a) The use of safety goggles or face shield; no high temperatures on the component surface are created
• b) The use of safety goggles or face shield
• c) no high temperatures on the component surface are created

Câu 298: Formula for computation of CG?

• a) CG=∑M/∑T
• b) CG=∑M/∑W
• c) CG=∑M*∑W

Câu 299: What may be required for special detailed inspection (SDI)

• a) Intricate cleaning and substantial access
• b) Intricate cleaning only
• c) Substantial access only

Câu 300: Any fasteners located within the area of corrosion and affected by the corrosion must be removed due to

• a) Possible corrosion under the fastener head or in the countersink has to be detected and removed
• b) Possible corrosion under the fastener head has to be detected and removed
• c) Possible corrosion under the countersink has to be detected and removed