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FAA AMT – AIRFRAME QUESTIONS FORM A REAL
EXAM LATEST 2026-2027 UPDATE WITH 100
QUESTIONS & 100% CORRECT DETAILED ANSWERS
GRADED A+ (BRAND NEW!!)
- Which document lists the limitations and procedures for safe operation of an aircraft? A. Maintenance Manual B. Type Certificate Data Sheet C. Airworthiness Directive D. Pilot’s Operating Handbook The POH/AFM contains operating limitations, normal and emergency procedures.
- What type of corrosion is most commonly found between overlapping aluminum sheets? A. Stress corrosion B. Crevice corrosion C. Pitting corrosion D. Filiform corrosion Crevice corrosion forms in confined areas where moisture becomes trapped.
- Which nondestructive inspection method uses magnetic fields to locate surface defects? A. Eddy current B. Radiographic
C. Magnetic particle D. Ultrasonic Magnetic particle inspection is used on ferromagnetic materials to detect surface and near-surface cracks.
- The primary purpose of rib stitching on fabric-covered aircraft is to: A. Improve aerodynamic smoothness B. Prevent fabric shrinkage C. Secure fabric to structural members D. Seal fabric seams Rib stitching attaches the fabric firmly to ribs and structural members.
- What aluminum alloy is most commonly used for aircraft structural components? A. 1100 B. 3003 C. 2024 D. 5052 2024 aluminum offers high strength and good fatigue resistance.
- A certificated mechanic may approve an aircraft for return to service after: A. Annual inspection only B. Preventive maintenance only C. Maintenance performed within the mechanic’s rating D. Major repairs without authorization Approval is allowed only for work within the mechanic’s certificate and ratings.
11.What type of rivet is commonly used when access is available to both sides? A. Blind rivet B. Cherry rivet C. Solid rivet D. Drive rivet Solid rivets provide the greatest strength when bucking access is available. 12.Which fabric inspection defect is most critical? A. Discoloration B. Loose rib stitching C. Tears near structural members D. Minor wrinkling Tears near structure can rapidly propagate and compromise integrity. 13.Aircraft static pressure systems are primarily used to operate: A. Compass B. Tachometer C. Altimeter and vertical speed indicator D. Fuel quantity gauges Static pressure instruments measure atmospheric pressure. 14.Which type of crack is caused by repeated cyclic loading? A. Stress corrosion crack B. Overload crack C. Fatigue crack D. Thermal crack Fatigue cracks result from repeated stress cycles below ultimate strength.
15.What is the function of wing dihedral? A. Increase lift B. Reduce drag C. Improve lateral stability D. Improve stall characteristics Dihedral causes the aircraft to naturally return to level flight. 16.Which component absorbs landing shock on most fixed-gear aircraft? A. Wheel rim B. Tire C. Shock strut or spring steel gear D. Brake assembly Shock-absorbing gear reduces structural stress during landing. 17.Which repair would be classified as a major repair? A. Replacing a bolt B. Replacing safety wire C. Repair affecting primary structure strength D. Lubricating hinges Major repairs affect weight, balance, strength, or flight characteristics. 18.What condition is most likely to cause flutter? A. Excessive lubrication B. Improper rigging C. Control surface imbalance D. High air density Flutter occurs when aerodynamic forces excite an unbalanced surface.
23.The purpose of a trim tab is to: A. Increase lift B. Improve stall speed C. Reduce pilot control forces D. Increase stability Trim tabs relieve continuous control pressure. 24.What type of inspection is required after severe turbulence? A. Progressive inspection B. Routine inspection C. Special inspection D. 100-hour inspection Unusual events require special inspections. 25.Which fastener is designed to fail under excessive load? A. AN bolt B. Hi-Lok bolt C. Shear pin D. Clevis bolt Shear pins protect structures by failing first. 26.What is the primary function of an aircraft fuselage? A. Generate lift B. Provide directional control C. Carry payload and connect components D. Reduce drag The fuselage houses occupants, cargo, and connects aircraft structures.
27.Which control surface controls yaw? A. Elevator B. Aileron C. Rudder D. Spoiler The rudder controls movement about the vertical axis. 28.What is the most common cause of structural failure? A. Manufacturing defects B. Improper design C. Metal fatigue D. Bird strikes Repeated stress cycles eventually lead to fatigue failure. 29.Which method removes corrosion without damaging base metal? A. Steel wire brush B. Sandblasting C. Chemical treatment D. Grinding wheel Chemical methods are controlled and minimize material loss. 30.What is the purpose of a doubler? A. Seal a joint B. Reduce vibration C. Reinforce a damaged structure D. Improve aerodynamics Doublers restore strength lost due to damage or repair.
35.Which condition requires immediate aircraft grounding? A. Paint blistering B. Minor oil leak C. Unapproved major structural repair D. Loose interior panel Unapproved major repairs invalidate airworthiness. 36.What is the function of wing flaps? A. Reduce drag B. Increase cruise speed C. Increase lift at low speeds D. Improve roll control Flaps allow lower takeoff and landing speeds. 37.Which alloy designation indicates pure aluminum? A. 2024 B. 3003 C. 1100 D. 7075 1100 aluminum is nearly pure. 38.What causes filiform corrosion? A. Saltwater exposure B. High temperatures C. Moisture under paint films D. Galvanic contact Filiform corrosion creeps beneath coatings.
39.Which inspection checks compliance with Airworthiness Directives? A. Progressive inspection B. 100-hour inspection C. Annual inspection D. Preflight inspection AD compliance is verified during annual inspections. 40.What is the function of a balance weight? A. Increase control sensitivity B. Reduce drag C. Prevent flutter D. Improve lift Balance weights counteract aerodynamic forces. 41.Which type of rivet head is flush with the surface? A. Universal head B. Brazier head C. Countersunk head D. Mushroom head Countersunk rivets reduce aerodynamic drag. 42.What is the primary purpose of aircraft skin? A. Structural support only B. Reduce noise C. Carry loads and maintain aerodynamic shape D. Insulation Skin is part of the load-carrying structure.
47.What is the purpose of a gusset? A. Seal a joint B. Reduce drag C. Strengthen a structural joint D. Improve appearance Gussets reinforce joints and distribute loads. 48.Which condition promotes galvanic corrosion? A. Dry environment B. Similar metals C. Dissimilar metals in contact with electrolyte D. Painted surfaces Galvanic corrosion occurs between dissimilar metals with moisture. 49.What is the correct edge distance for rivets? A. One rivet diameter B. Two rivet diameters C. Four rivet diameters D. Five rivet diameters Standard practice requires minimum two diameters. 50.Which aircraft axis runs wingtip to wingtip? A. Longitudinal B. Vertical C. Lateral D. Directional The lateral axis controls pitch.
51.Which type of stress acts parallel to the surface of a material? A. Tensile B. Compressive C. Shear D. Bending Shear stress acts parallel to the applied force and material surface. 52.What is the primary function of stringers in an aircraft structure? A. Carry torsional loads B. Support landing gear C. Prevent skin buckling D. Reduce vibration Stringers stiffen the skin and prevent buckling under load. 53.Which control surface moves about the lateral axis? A. Rudder B. Aileron C. Elevator D. Spoiler The elevator controls pitch about the lateral axis. 54.Which inspection is required for aircraft used for hire? A. Annual only B. Progressive only C. 100 - hour inspection D. Special inspection
Aviation snips are designed for thin aircraft metals. 59.Which condition may result from excessive cable tension? A. Control lag B. Reduced flutter C. Restricted control movement D. Improved response Over-tensioning increases friction and restricts movement. 60.What is the function of a fairing? A. Strengthen structure B. Support control surfaces C. Reduce aerodynamic drag D. Improve stability Fairings smooth airflow and reduce drag. 61.Which aluminum alloy offers the highest strength? A. 1100 B. 2024 C. 7075 D. 3003 7075 aluminum is used where very high strength is required. 62.What is the most common cause of cable wear? A. Excessive lubrication B. Corrosion C. Misaligned pulleys D. Temperature change
Misalignment causes abrasion and cable strand breakage. 63.Which fabric defect indicates advanced deterioration? A. Color fading B. Loose tape C. Failure of punch test D. Minor wrinkles A failed punch test shows loss of fabric strength. 64.What type of rivet is used where access is limited to one side? A. Solid rivet B. Universal rivet C. Blind rivet D. Brazier rivet Blind rivets are installed from one side only. 65.Which load acts along the length of a structural member? A. Shear B. Torsion C. Tension or compression D. Bending Axial loads act along the member’s length. 66.What instrument is affected by both pitot and static pressure? A. Altimeter B. VSI C. Airspeed indicator D. Compass
The longitudinal axis controls roll. 71.What is the purpose of a service bulletin? A. Regulatory enforcement B. Aircraft certification C. Manufacturer-recommended maintenance D. Airworthiness approval Service bulletins provide guidance but are not always mandatory. 72.What defect can cause rapid crack propagation? A. Smooth edges B. Stop drilling C. Sharp corners D. Rounded cutouts Sharp corners concentrate stress. 73.Which metal is commonly used for aircraft control cables? A. Aluminum B. Copper C. Stainless steel D. Titanium Stainless steel offers strength and corrosion resistance. 74.What is the purpose of stop-drilling a crack? A. Strengthen structure B. Seal metal C. Prevent crack growth D. Improve appearance
Stop drilling reduces stress concentration at crack tips. 75.Which inspection detects hidden corrosion under paint? A. Visual inspection B. Ultrasonic C. Tap test D. Magnetic particle Tap tests reveal changes in sound due to corrosion. 76.What is the correct safety-wire twist rate? A. One twist per inch B. 6 – 8 twists per inch C. 10–12 twists per inch D. Any rate FAA standards specify 6–8 twists per inch. 77.Which control surface primarily controls roll? A. Elevator B. Rudder C. Aileron D. Trim tab Ailerons control roll about the longitudinal axis. 78.Which factor most affects wing loading? A. Airspeed B. Wing shape C. Aircraft weight D. Engine power
