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FAA Aviation Mechanic Airframe (AMA) practice questions

300 free questions with answers and explanations.

Practice test
  1. 151.A technician notices a nose landing gear oscillating rapidly side-to-side during high-speed taxi. Which component is most likely malfunctioning?Landing Gear Systems
  2. 152.A technician wants to inspect the interior surface of a wing rear spar for corrosion without removing the wing skin. Which inspection tool is best suited for this task?Airframe Inspection
  3. 153.A technician is examining a fuselage design in which the smooth outer skin alone carries all primary bending, torsional, and shear loads, with no internal longitudinal stiffening members such as stringers or longerons. This type of fuselage structure is best classified as which of the following?Airframe Structures
  4. 154.A wing spar experiences a twisting load along its longitudinal axis during flight maneuvers. What type of stress is primarily being applied to the spar?Airframe Structures
  5. 155.A technician is troubleshooting a landing gear system in which the gear extends normally but the pilot reports the gear handle requires excessive force to move to the UP position after landing. Inspection reveals the mechanism that mechanically holds the gear in the extended position is not releasing properly. Which component is most likely malfunctioning?Landing Gear Systems
  6. 156.An aircraft owner asks why the annual inspection must occur within a specific timeframe. According to 14 CFR 91.409, the annual inspection must be performed within how many calendar months of the previous annual inspection?Airframe Inspection
  7. 157.A technician needs to measure the remaining wall thickness of a corroded aluminum wing skin without removing or disassembling the panel. Which NDT method is best suited for this purpose?Airframe Inspection
  8. 158.A technician is installing 3/32-inch diameter solid rivets in an aluminum skin panel per AC 43.13-1B guidance. What is the minimum edge distance required from the center of the rivet hole to the edge of the sheet?Airframe Structures
  9. 159.A technician is troubleshooting a hydraulically actuated nose wheel steering system. Turning the cockpit tiller produces no nose wheel movement even though hydraulic pressure and quantity are normal. Which component most directly controls the direction and rate of fluid flow to the steering cylinders in response to tiller input?Landing Gear Systems
  10. 160.A technician is reviewing a structural repair drawing that specifies work at 'Fuselage Station (FS) 320.' What does this number represent?Airframe Structures
  11. 161.A technician installs a clevis bolt securing a flight control push-pull rod end to a bellcrank. The bolt has a drilled shank and is secured with a castellated nut. Which safetying method must be used to complete the installation?Airframe Structures
  12. 162.A technician is troubleshooting a cylinder head temperature (CHT) indicating system that uses a resistance-bulb temperature sensor wired into one leg of a Wheatstone bridge circuit. The technician finds a corroded connector adding extra resistance in the sensor leg of the bridge. What effect will this have on the cockpit indication?Airframe Electrical and Instruments
  13. 163.An aircraft's hydraulic pump output drops significantly due to a partial pump failure. The system is designed so that flight control actuation continues to receive adequate flow while landing gear and flap operation are automatically restricted until flow is restored. Which component provides this function?Hydraulic and Pneumatic Systems
  14. 164.A technician troubleshoots a capacitance-type fuel quantity indicating system that reads inaccurately across varying fuel temperatures. Inspection reveals a small tube-shaped sensing probe mounted separately from the main tank probes. What is the function of this component?Fuel, Cabin and Ice Control Systems
  15. 165.A technician needs to anneal a work-hardened 2024 aluminum alloy sheet to soften it for extensive forming operations. Which process is correct?Airframe Structures
  16. 166.A technician needs to install rivets in a wing rib location that is accessible from only one side. Which type of fastener is best suited for this application?Airframe Structures
  17. 167.A technician needs to select an aluminum alloy sheet for a highly loaded wing spar cap where zinc is the principal alloying element, providing one of the highest strengths available in common aluminum alloys. Which alloy designation should be selected?Airframe Structures
  18. 168.During a brake inspection, a technician notices the wear indicator pin on a multiple-disc brake assembly is flush with the housing when the brake is applied. This indicates that theLanding Gear Systems
  19. 169.A technician is troubleshooting a DC generator system in which output voltage fluctuates excessively with engine RPM changes. Which component is primarily responsible for maintaining constant output voltage despite varying generator speed?Airframe Electrical and Instruments
  20. 170.During a corrosion inspection, a technician finds localized pitting corrosion occurring where an aluminum wing skin panel is fastened with stainless steel screws, in an area exposed to moisture. What type of corrosion is most likely present?Airframe Inspection
  21. 171.A technician needs to raise an aircraft off the ground to perform a landing gear retraction test. Where should the jacks be placed to safely support the aircraft?Airframe Structures
  22. 172.A pneumatic system compressor supplies air used to actuate landing gear doors on a light aircraft. Downstream of the compressor, a technician finds a canister filled with blue crystalline granules that turn pink when saturated. What is the function of this component?Hydraulic and Pneumatic Systems
  23. 173.A technician measures nose landing gear wheel alignment by placing marks on the front and rear of each tire at axle height and measuring the distance between the marks. The front measurement is 26.000 inches and the rear measurement is 26.250 inches. What alignment condition does this indicate, and by how much?Landing Gear Systems
  24. 174.A technician is installing a new engine cowling panel that attaches to the adjacent airframe structure along its entire leading edge using a continuous hinge with a single hinge pin running the full length of the joint. What type of hinge is this?Airframe Structures
  25. 175.A directional gyro (DG) is correctly aligned with the magnetic compass at the start of a flight at 30° North latitude. Apparent precession caused by the earth's rotation occurs at a rate equal to 15° multiplied by the sine of the latitude, per hour. If the DG is not realigned during a 2-hour flight, how many degrees of drift due to apparent precession should the technician expect?Airframe Electrical and Instruments
  26. 176.A series circuit in a 28-volt DC aircraft system contains a 4-ohm resistor and a 10-ohm resistor. A technician measures the total circuit current at 2 amps. What is the voltage drop across the 10-ohm resistor?Airframe Electrical and Instruments
  27. 177.A technician needs to remove a hydraulic actuator for overhaul without draining the entire system reservoir or allowing excessive air to enter the lines. The hydraulic lines to the actuator are equipped with fittings that automatically seal both the line and the component port when separated. What type of fitting is being used?Hydraulic and Pneumatic Systems
  28. 178.A composite technician applies a vacuum bag over a repair patch layup on a wing skin prior to curing. What is the primary purpose of the vacuum bag in this process?Airframe Structures
  29. 179.A technician troubleshoots a hand-operated auxiliary hydraulic pump used for ground servicing and emergency operation. The pump strokes normally, but no pressure builds in the system, and fluid seems to simply move back and forth within the pump body. Which malfunction would most likely explain this symptom?Hydraulic and Pneumatic Systems
  30. 180.Which gyroscopic principle allows the attitude indicator to maintain a stable reference to the horizon regardless of the aircraft's pitch and bank changes?Airframe Electrical and Instruments
  31. 181.A technician is performing a scheduled inspection on a transport category aircraft and checks the resistance of the static discharge wicks (static wicks) on the trailing edges of the flight control surfaces. Excessive resistance in a static wick would most likely result in which condition?Airframe Inspection
  32. 182.A technician's overhaul manual specifies that the machined surface of a highly stressed steel landing gear component be shot peened after final machining, prior to plating. What is the primary purpose of this shot peening process?Airframe Structures
  33. 183.A twin-engine aircraft experiences a fuel pump failure on the left engine. The pilot opens the fuel crossfeed valve. What is the primary function this action performs?Fuel, Cabin and Ice Control Systems
  34. 184.During a scheduled inspection, a technician finds a dent in a wing skin panel. Before deciding whether the aircraft can be returned to service without repair, which reference should the technician consult to determine whether the damage falls within allowable limits?Airframe Structures
  35. 185.A technician is selecting solid wood stock to repair a wing spar and must ensure the material meets aircraft structural grade requirements. Which characteristic would disqualify a piece of Sitka spruce from use in this repair?Airframe Structures
  36. 186.An aircraft's pitot tube becomes completely blocked by ice while the drain hole remains open, and the aircraft then climbs to a higher altitude. What will happen to the airspeed indicator?Airframe Electrical and Instruments
  37. 187.During a borescope inspection, a technician finds a composite honeycomb sandwich panel that sounds dull and 'dead' in one area when tap tested, compared to a sharp, clear ring elsewhere on the panel. What does this finding most likely indicate?Airframe Structures
  38. 188.A technician is installing a two-piece structural fastener in a highly loaded wing skin joint. The fastener consists of a threaded pin driven through the hole and a collar that is torqued onto the pin's threads until a break-away wrenching feature shears off at a predetermined torque value. Which fastener is being installed?Airframe Structures
  39. 189.A technician is installing a removable inspection access panel that must be secured with machine screws from the exterior, while the fastener on the inside of the structure remains permanently attached to the skin so it cannot fall into the structure. Which fastener should be used?Airframe Structures
  40. 190.A technician is performing a static system leak check on an unpressurized single-engine airplane in accordance with 14 CFR Part 43, Appendix E. After applying suction to simulate a climb to altitude and sealing the system, the altimeter should not indicate a loss of more than what value in one minute for the system to be considered airtight?Airframe Electrical and Instruments
  41. 191.A vacuum-driven attitude indicator experiences small precession errors during normal operation that must be continuously corrected to keep the gyro's spin axis vertical. Which mechanism inside the instrument automatically applies this correcting torque?Airframe Electrical and Instruments
  42. 192.A hydraulic actuating cylinder is designed so that fluid pressure can be applied to either side of the piston to move it in both directions, with mechanical force from the fluid used for both extension and retraction. What type of actuator is this?Hydraulic and Pneumatic Systems
  43. 193.During a corrosion inspection, a technician finds a flaking, layered appearance on an extruded aluminum wing spar cap, with the surface lifting in thin layers parallel to the material's grain structure. This is characteristic of which type of corrosion?Airframe Inspection
  44. 194.A technician performing a preflight functional check of the pitot heat system on a turbine aircraft notes that ammeter current draw increases significantly when the pitot heat switch is turned on. What does this indicate?Fuel, Cabin and Ice Control Systems
  45. 195.After a hard landing, a technician inspecting the lower wing skin near the main spar attachment notices a series of shallow, wavy ripples in the skin surface that were not present before the event. What is the most appropriate next step?Airframe Inspection
  46. 196.A technician removes a main landing gear wheel and notices a small plug installed in the wheel hub near the tire bead area has melted, releasing air from the tire. What is the purpose of this component?Landing Gear Systems
  47. 197.A technician is troubleshooting a transport-category air cycle cooling pack and notes that hot bleed air is passed through a heat exchanger, further compressed, cooled again, and then expanded through a turbine before entering the cabin. What is the primary purpose of expanding the air through this turbine?Fuel, Cabin and Ice Control Systems
  48. 198.A technician is servicing an air/oil (oleo pneumatic) shock strut that must be drained and recharged after a seal replacement. What is the correct general procedure for recharging the strut?Airframe Structures
  49. 199.During a walk-around inspection, a technician notices that a painted torque stripe applied across a fastener head and adjacent structure is broken and misaligned. What does this observation most likely indicate?Airframe Inspection
  50. 200.A hydraulic line supplying a wing flap actuator ruptures in flight. The system is equipped with a device that senses excessive flow caused by the break and automatically shuts off fluid flow to prevent total loss of hydraulic fluid. What is this device called?Hydraulic and Pneumatic Systems