T Pre-Mock Board Exam: AIRCRAFT CONSTRUCTION, REPAIR, AND MODIFICATION

1. Normalizing is a process of heat treating _____.

A. Non-ferrous metals aside from aluminum

B. Both ferrous and non-ferrous metals

C. Aluminum alloys only

D. Ferrous metals only

D. Ferrous metals only

2. A category of plastic material that is capable of softening or flowing when reheated is described as a _____.

A. Thermoplastic

B. Thermoflow

C. Thermoset

D. Thermocure

A. Thermoplastic

3. An aircraft with an empty weight of 2,100 pounds and an empty weight CG +32.5 was altered as follows:

1. Two 18-pound passenger seats located at +73 were removed.

2. Structural modifications were made at +77 increasing weight by 17 pounds.

3. A seat and safety belt weighing 25 pounds were installed at +74.5.

4. Radio equipment weighing 35 pounds was installed at +95.

What is the new empty weight CG?

A. +33.68

B. +34.65

C. +34.01

D. -34.65

A. +33.68

4. A light aircraft is weighed in the flying position with the following weights recorded: left wheel is 800 lbs, right wheel is 810 lbs, and nose wheel is 150 lbs. The nosewheel is 12 inches behind the firewall (datum line). The distance between the main wheels and the nose wheel is 68 inches. The CG of the aircraft is located at _____.

A. 73.2 inches behind the firewall

B. 5.8 inches ahead of the main wheels

C. 62.2 inches behind the firewall

D. 75.2 inches behind the firewall

B. 5.8 inches ahead of the main wheels

5. Why is steel tempered after being hardened?

A. To increase its hardness and ductility.

B. To increase its strength and decrease its internal stresses.

C. To relieve its internal stresses and reduce its brittleness.

D. To relieve its internal stresses and increase its brittleness.

C. To relieve its internal stresses and reduce its brittleness.

6. In Gas Tungsten Arc welding, a stream of inert gas is used to _____.

A. Lower the temperature required to properly fuse the metal

B. Concentrate the heat of the arc and prevent its dissipation

C. Prevent the formation of oxides in the puddle

D. Attract oxygen to the puddle of molten metal

C. Prevent the formation of oxides in the puddle

7. The shear strength of an AN470DD-6-8 rivet, immediately after driving, is 75% of its ultimate shear strength. The remaining 25% is obtained by _____.

A. Shear loads imposed on the riveted assembly in use

B. Chilling the rivet unit for an hour

C. Standing at ordinary room temperature for about 4 days (age hardening)

D. Heating the unit in which the rivet was used to 960°F, holding for 4 hours, and allowing the unit to cool slowly until room temperature is reached.

C. Standing at ordinary room temperature for about 4 days (age hardening)

8. Excessive wear on both of the sides of a control cable pulley groove is evidence of _____.

A. Cable misalignment

B. Insufficient cable tension

C. Pulley misalignment

D. Excessive cable tension

C. Pulley misalignment

9. It is the usable life of the glue from the time it is mixed until the time it must be used.

A. Pot life

B. Close assembly time

C. Open assembly time

D. Pressing time

A. Pot life

10. Which of the following is the most satisfactory extinguishing agent for use on a carburetor or intake fire?

A. Carbon dioxide

B. Dry chemical

C. A fine water mist

D. Sand

A. Carbon dioxide

11. How should a welding torch flame be adjusted to weld stainless steel?

A. Slightly carburizing

B. Welding stainless steel is not acceptable for aircraft.

C. Neutral

D. Slightly oxidizing

A. Slightly carburizing

12. A nonelectrolytic chemical treatment for aluminum alloys to increase corrosion resistance and paint-bonding qualities is called _____.

A. Dichromating

B. Anodizing

C. Chrome plating

D. Alodizing

D. Alodizing

13. The replacement of a damaged vertical stabilizer with a new identical stabilizer purchased from the aircraft manufacturer is considered a _____.

A. Major repair

B. Minor alteration

C. Major alteration

D. Minor repair

D. Minor repair

14. A six-cylinder engine with a bore of 3.5 inches, a cylinder height of 7 inches and a stroke of 4.5 inches will have a total piston displacement of _____.

A. 43.3 cubic inches

B. 259.77 cubic inches

C. 43.3 cubic feet

D. 256.88 cubic inches

B. 259.77 cubic inches

15. What defects will be detected by magnetizing a part in a circular pattern?

A. Defects perpendicular to the long axis of the part

B. Defects perpendicular to the concentric circles of magnetic force within the part

C. Defects parallel to the concentric circles of magnetic force within the part

D. Defects parallel to the long axis of the part

D. Defects parallel to the long axis of the part

16. What is the speed of a spur gear with 42 teeth driven by a pinion gear with 14 teeth turning at 420 RPM?

A. 160 RPM

B. 180 RPM

C. 588 RPM

D. 140 RPM

D. 140 RPM

17. In 2024-T36 material, the alloying agent is expressed by the number _____.

A. 24

B. 20

C. 36

D. 2

D. 2

18. Alloy 2117 rivets are heat treated _____.

A. By the manufacturer and do not require reheat treatment before being driven

B. To a temperature of 500 to 510°C and quenched in cold water

C. By the manufacturer but require reheat treatment before being driven

D. To a temperature of 490 to 500°C and quenched in cold water

A. By the manufacturer and do not require reheat treatment before being driven

19. The purpose of the check valve is to _____.

A. Relieve pressure

B. Cut off in case of emergency

C. Prevent a rapid flow in reverse

D. Maintain pressure in part of the system and prevent reverse flow

D. Maintain pressure in part of the system and prevent reverse flow

20. Regarding the statements below:

(1) Relief valves are used in pneumatic systems as damage-preventing units.

(2) Check valves are used in both hydraulic and pneumatic systems.

A. Only No. 1 is true.

B. Only No. 2 is true.

C. Both No. 1 and No. 2 are true.

D. Neither No. 1 nor No. 2 is true.

C. Both No. 1 and No. 2 are true.

21. What publication is used for guidance to determine whether a powerplant repair is major or minor?

A. Pilots handbook

B. Aircraft owner's manual

C. Airworthiness Directives

D. 14 CFR 43

D. 14 CFR 43

22. At what speed should a ship be rigged to fly hands-off?

A. Top speed

B. Cruise

C. A little below cruise so as to save the pilot from fatigue

D. Near stalling

B. Cruise

23. Which statement is true regarding a cantilever wing?

A. No external bracing is needed.

B. It requires only one lift strut on each side.

C. External bracing is needed.

D. It has non-adjustable lift struts.

A. No external bracing is needed.

24. During inspection of the flight control system of an airplane equipped with differential-type aileron control, side-to-side movement of the control stick will cause _____.

A. The left aileron to move through a greater number of degrees from full up to full down than the right aileron

B. Each aileron to have a greater up travel from the streamlined position than down travel

C. The right aileron to move through a greater number of degrees from full up to full down than the left aileron

D. Each aileron to have a greater down travel from the streamlined position than up travel

B. Each aileron to have a greater up travel from the streamlined position than down travel

25. A nonelectrolytic chemical treatment for aluminum alloys to increase corrosion resistance and paint-bonding qualities is called _____.

A. Anodizing

B. Galvanizing

C. Alodizing/Alodining

D. Dichromating

C. Alodizing/Alodining

26. Which fiber-to-resin percentage ratio for advanced composite wet lay-ups is generally considered the best for strength?

A. 70:30

B. 50:50

C. 40:60

D. 60:40

D. 60:40

27. Zone numbers on aircraft blueprints are _____.

A. Used to indicate different sections of the aircraft

B. Not used on working drawings

C. Used to locate parts, sections and views on large drawings

D. Used to locate parts in the aircraft

C. Used to locate parts, sections and views on large drawings

28. A particular component is attached to the aircraft structure by the use of an aircraft bolt and a castle tension nut combination. If the cotter pin hole does not align with the recommended torque range, the acceptable practice is to _____.

A. Exceed the maximum recommended torque range by no more than 10%

B. Let it be because it is a normal practice

C. Tighten below the torque range

D. Change the washers and try again

D. Change the washers and try again

29. What is the location of the center of gravity in %MAC if the center of gravity is 295 inches from the datum, LEMAC is 270 inches from the datum, root chord is 70 inches, and tip chord is 35 inches?

A. %MAC is between 48 and 51

B. %MAC is between 45 and 48

C. %MAC is between 39 and 42

D. %MAC is between 42 and 45

B. %MAC is between 45 and 48

30. What is the color of corrosion on copper tubing?

A. Green

B. Yellow

C. White

D. Black

A. Green

31. What do drag and anti-drag wires do?

A. Transmit the landing loads evenly to the center section

B. Transmit the drag and anti-drag loads evenly to the center section

C. Serve as means of angle of attack adjustment

D. Transmit the weight of the ship to the main shear beam

B. Transmit the drag and anti-drag loads evenly to the center section

32. Which statement concerning the 100-hour inspection of an airplane equipped with a push-pull tube-type control system is true?

A. The threaded rod ends should not be adjusted in length for rigging purposes because the rod ends have been properly positioned and staked during manufacture.

B. To ensure the cable end passes the inspection hole on drilled-through type fittings but leaves the locking wire hole clear

C. The terminal end threads of the turnbuckles should be visible through the safety hole in the barrel.

D. The threaded rod ends should be checked for the amount of thread engagement by means of the inspection hole provided.

D. The threaded rod ends should be checked for the amount of thread engagement by means of the inspection hole provided.

33. To measure the angle of incidence of a two-spar wing, the mechanic would proceed by _____.

A. Measuring the difference in height of the leading and trailing edges of the wing with the ship in level position

B. Using a ruler and measuring the length of the spar and the wing chord

C. Placing a straight edge against the spars of the wing and, with a bubble protractor, measuring the angle the straight edge makes with the level line of the fuselage while the ship is in level position

D. Dropping a plumb bob from the top wing and measuring the angle the string makes with the line from the point of suspension to the leading edge of the bottom wing in the longitudinal plane.

C. Placing a straight edge against the spars of the wing and, with a bubble protractor, measuring the angle the straight edge makes with the level line of the fuselage while the ship is in level position

34. If the (+) terminal of a voltmeter is connected to the (-) terminal of the source voltage and the (-) terminal of the meter is connected to the (+) terminal of the source voltage, the voltmeter will read _____.

A. Correctly

B. Low voltage

C. High voltage

D. Backwards

D. Backwards

35. It occurs when two dissimilar metals make electrical contact in the presence of an electrolyte.

A. Pitting

B. Galvanic

C. Exfoliation

D. Stress

B. Galvanic

36. Some aircraft are protected against airframe icing by heating the leading edges of the airfoils and intake ducts. When is this type of anti-ice system usually operated during flight?

A. Continuously while the aircraft is in flight.

B. Whenever icing conditions are first encountered or expected to occur.

C. In symmetric cycles during icing conditions to remove ice as it accumulates.

D. Only on the ground

B. Whenever icing conditions are first encountered or expected to occur.

37. Which force is not present during gliding?

A. Weight

B. Thrust

C. Drag

D. Lift

B. Thrust

38. Buffeting is the intermittent application of forces to a part of an airplane. It is caused by _____.

A. Incorrect rigging of flaps

B. Incorrect rigging of elevators

C. An unsteady flow from turbulence

D. Incorrect rigging of ailerons

C. An unsteady flow from turbulence

39. An airplane's center of lift is usually located aft of its center of gravity _____.

A. To improve stability about the longitudinal axis.

B. To improve stability about the directional axis.

C. So that the airplane will have a tail-heavy tendency.

D. So that the airplane will have a nose-heavy tendency.

D. So that the airplane will have a nose-heavy tendency.

40. Zero fuel weight is the _____.

A. Maximum permissible weight of a loaded aircraft (passengers, crew, and cargo) without fuel

B. Basic operating weight without crew, fuel, and cargo

C. Dry weight plus the weight of full crew, passengers, and cargo

D. Landing weight

A. Maximum permissible weight of a loaded aircraft (passengers, crew, and cargo) without fuel

41. Which rivet is used for riveting nickel steel alloys?

A. Monel

B. Stainless steel

C. 5056 aluminum

D. Mild steel

A. Monel

42. Rivet pitch is the distance between the _____.

A. None of the above

B. Centers of rivets in adjacent rows

C. Heads of rivets in the same row

D. Centers of adjacent rivets in the same row

D. Centers of adjacent rivets in the same row

43. Which of the following need not be considered when determining minimum rivet spacing?

A. None of the above

B. Type of material being riveted

C. Rivet diameter

D. Rivet length

D. Rivet length

44. An MS20 455 AD 4-8 rivet is given. What does 455 mean?

A. Countersunk

B. Round head

C. Brazier

D. Flat head

C. Brazier

45. A single-lap sheet splice is to be used to repair a section of damaged aluminum skin. If a double row of 1/8-inch rivets is used, the minimum allowable overlap will be _____.

A. 13/16 inch

B. 1/2 inch

C. 3/4 inch

D. 12/16 inch

A. 13/16 inch

46. What aluminum alloy designations indicate that the metal has received no hardening or tempering treatment?

A. 5052-H36

B. 2024-T3

C. 6061-O

D. 3003-F

D. 3003-F

47. A light aircraft is weighed in the flying position with the following weights recorded: left wheel is 800 lbs, right wheel is 810 lbs, and nose wheel is 150 lbs. The nosewheel is 12 inches behind the firewall (datum line). The distance between the main wheels and the nose wheel is 68 inches. The CG of the aircraft is located at _____.

A. 5.8 inches ahead of the main wheels

B. 73.2 inches behind the firewall

C. 75.2 inches behind the firewall

D. 62.2 inches behind the firewall

A. 5.8 inches ahead of the main wheels

48. The replacement of a damaged vertical stabilizer with a new identical stabilizer purchased from the aircraft manufacturer is considered a _____.

A. Minor alteration

B. Minor repair

C. Major alteration

D. Major repair

B. Minor repair

49. The shop head of a rivet should be _____.

A. One-half times the diameter of the manufactured head of the rivet

B. One and one-half times the diameter of the manufactured head of the rivet

C. One and one-half times the diameter of the rivet shank

D. One-half times the diameter of the rivet shank

C. One and one-half times the diameter of the rivet shank

50. What is the location of the center of gravity in %MAC if the center of gravity is 295 inches from the datum, LEMAC is 270 inches from the datum, root chord is 70 inches, and tip chord is 35 inches?

A. %MAC is between 39 and 42

B. %MAC is between 42 and 45

C. %MAC is between 48 and 51

D. %MAC is between 45 and 48

D. %MAC is between 45 and 48