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100 Hour Inspection Checklist
Section 1: Engine Run-Up
1. 1. Are the engine temperatures and pressures inspected?
Yes
No
N/A
2. 2. Is the Static RPM verified?
Yes
No
N/A
3. 3. Is the magneto drop noted during inspection, paying particular attention to any differences between the drop on the two magnetos?
Yes
No
N/A
4. 4. What are the readings during the inspection :Left
5. 5. What are the readings during the inspection :Right
6. 6. What are the readings during the inspection : Difference
7. 7. Is the engine response to changes in power checked?
8. 8. Are any unusual engine noises inspected?
Yes
No
N/A
9. 9. Is the propeller response through pitch range checked?
Yes
No
N/A
10. 10. Is the fuel tank selector or shut-off valve operated on each tank and off positions long enough to ensure the valve functions properly?
Yes
No
N/A
11. 11. Are the idling speed and mixture checked?
Yes
No
N/A
12. 12. Is the proper idle cut-off checked?
Yes
No
N/A
13. 13. Is the generator warning light or ammeter looked at?
Yes
No
N/A
14. 14. Is the suction gauge inspected?
Yes
No
N/A
15. 15. Is the fuel flow indicator functioning properly?
Yes
No
N/A
16. 16. Is the magneto switch shut off at idle?
Yes
No
N/A
Section 2: Engine Compartment
1. 1. Is the oil cooler checked for security, leaks, and obstructed air passages?
Yes
No
N/A
2. 2. Is the induction air filter examined?
Yes
No
N/A
3. 3. Is the entire engine assembly looked at?
Yes
No
N/A
4. 4. Is the induction air box inspected for internal cleanliness, cracks, and security?
Yes
No
N/A
5. 5. Are the doors checked for operation and sealing?
Yes
No
N/A
6. 6. Is the security and proper operation of the controls inspected?
Yes
No
N/A
7. 7. Are the cold and hot air flexible hoses checked for security, kinks, holes, chafing, and burnt spots?
Yes
No
N/A
8. 8. Is the engine baffle examined for security, sealing, cracks, metal deformation, and the attachment of sealing strips?
Yes
No
N/A
9. 9. Are the cylinders inspected for security, cracks, and broken cooling fins? Are the rocker box covers checked?
Yes
No
N/A
10. 10. Are the push rod housings inspected for security, oil leaks, cracks, and dents?
Yes
No
N/A
11. 11. Are the crankcase, oil pan, and accessory section checked for security, oil leaks, and proper safetying?
Yes
No
N/A
12. 12. Is the front crankshaft seal checked for any signs of oil leakage?
Yes
No
N/A
13. 13. Is the oil filter checked? Is there a new filter installed, if needed?
Yes
No
N/A
14. 14. Are all lines and hoses inspected for security, leaks, deteriorated hoses, and loose or corroded clamps?
Yes
No
N/A
15. 15. Are the drain lines and hoses examined for security, leaks, and any signs of chafing?
Yes
No
N/A
16. 16. Is the intake system checked thoroughly for security, leaks, deteriorated hoses, loose or corroded clamps, and any signs of chafing?
Yes
No
N/A
17. 17. Is the exhaust system inspected for security, leaks, cracks, burned-out spots, and internal flame arrester cones?
Yes
No
N/A
18. 18. Is the ignition harness examined for security, chafing, burning, defective insulation, and loose or broken terminals?
Yes
No
N/A
19. 19. Are the spark plugs checked for the proper gap, cleanliness, and evidence of reliable operation?
Yes
No
N/A
20. 20. Are the crankcase and vacuum system breather lines checked for security, obstructions, corrosion, cracks, and chafing?
Yes
No
N/A
21. 21. Are all electrical wiring in the engine compartment inspected for security, chafing, defective insulation, and loose or broken terminals?
Yes
No
N/A
22. 22. Is the vacuum pump checked for security, oil leaks, and proper safety?
Yes
No
N/A
23. 23. Is the vacuum relief valve inspected for security, cleanliness of the inlet filter, and corrosion, and is safetying ensured?
Yes
No
N/A
24. 24. Are the engine, propeller controls, and linkage checked for security, proper rigging, binding, excessive wear, cracks, misalignment, corrosion, safetying, and chafing?
Yes
No
N/A
25. 25. Are the engine shock mounts checked for security, safety, and deterioration?
Yes
No
N/A
26. 26. Is the engine mount checked for cracks, corrosion, dents, bends, and evidence of overheating?
Yes
No
N/A
27. 27. Are the ground straps looked at for security, corrosion, fraying of braided straps, and cracking of metal straps?
Yes
No
N/A
28. 28. Are the cabin heater valve and door checked for proper operation, sealing, cracks, and deformation?
Yes
No
N/A
29. 29. Are the controls inspected for security, binding, proper rigging, and alignment?
Yes
No
N/A
30. 30. Is the starter checked for security, and oil leaks, and are tight electrical connections ensured?
Yes
No
N/A
31. 31. Is the engagement lever verified for proper rigging and return spring tension?
Yes
No
N/A
32. 32. Is the alternator inspected for security, and any oil leaks if the generator is fastened to the accessory case?
Yes
No
N/A
33. 33. Are the drive belts checked for cuts, fraying, and excessive wear?
Yes
No
N/A
34. 34. Is the security of all electrical connections ensured?
Yes
No
N/A
35. 35. Is the carburetor inspected for security, cracks, corrosion, fuel leaks, and cleanliness of the inlet screen, also is proper safetying ensured?
Yes
No
N/A
36. 36. Is the engine cowling examined for cleanliness, proper fit, security, cracks, dents, cuts, tears, loose or broken hinges, defective latches or fasteners, and deteriorated paint?
Yes
No
N/A
37. 37. Are the cowl flaps checked for their condition and operation, including cleanliness, proper fit, security, cracks, dents, cuts, tears, loose or broken hinges, and deteriorated paint?
Yes
No
N/A
38. 38. Are the controls securely fastened, properly rigged, and free from any binding?
Yes
No
N/A
39. 39. Are all compressions checked?
Yes
No
N/A
Section 3: Magnetos
1. 1. Are the breaker points examined for security, pits, burns, and carbon deposits?
Yes
No
N/A
2. 2. Are cam followers lubricated?
Yes
No
N/A
3. 3. Are the ventilator screens checked for cleanliness and security?
Yes
No
N/A
4. 4. Are the magnetos correctly timed to the engine and securely attached?
Yes
No
N/A
Section 4: Propeller
1. 1. Are the constant-speed propellers inspected for nicks, cracks, corrosion, bends, dents, loose nuts and bolts, oil leaks, freedom of blade movement, excessive looseness of blades, security, and proper safety?
Yes
No
N/A
2. 2. Is the governor checked for security, safety, cracks, and oil leaks?
Yes
No
N/A
3. 3. Is the control verified for correct rigging, security, no binding, and proper safety?
Yes
No
N/A
4. 4. Are the spinner and spinner bulkhead inspected for cracks, dents, alignment, security, and the condition of the paint?
Yes
No
N/A
Section 5: Fuel System
1. 1. Is the fuel strainer checked for internal cleanliness, security, leaks, and safety?
Yes
No
N/A
2. 2. Are the drain valve and control verified for proper rigging, operation, leaks, and security?
Yes
No
N/A
3. 3. Are the fuel tank sump drains examined for water and sediment, leaks, security, and proper safety?
Yes
No
N/A
4. 4. Are the quick-drain valves checked for proper operation?
Yes
No
N/A
5. 5. Is the underside of the wings inspected for any evidence of fuel leaks?
Yes
No
N/A
6. 6. Are the fuel tank filler cap placards verified for legibility?
Yes
No
N/A
7. 7. Are the caps inspected for leaks, and is security ensured?
Yes
No
N/A
8. 8. Are the fuel vents checked for obstructions, leaks, security, and proper position of the vent behind the wing strut?
Yes
No
N/A
9. 9. Are the fuel selector valve or shut-off valve checked for proper operation, security, leaks, and positive detent positions, and are legibility and correct indexing of the placard ensured?
Yes
No
N/A
10. 10. Are all fuel lines inspected for security, chafing, leaks, cracks, dents, kinks, and corrosion?
Yes
No
N/A
11. 11. Are fuel line and selector valve drains verified for leaks, and is safetying ensured?
Yes
No
N/A
12. 12. Are the fuel quantity gauges (direct-reading), electrical fuel quantity gauges, and fuel quantity electrical transmitters examined for security, correct indication, defective wiring, cracked glass, legibility, and leaks?
Yes
No
N/A
13. 13. Is the proper operation of the engine primer verified for proper operation and leaks?
Yes
No
N/A
Section 6: Landing Gear
1. 1. Are the brakes checked for proper operation, sponginess, and failure to hold pressure, and is the fluid level adequate?
Yes
No
N/A
2. 2. Are the master cylinders, brake lines, and hoses inspected for security, leaks, cracks, dents, and chafing?
Yes
No
N/A
3. 3. Are the brake linings verified for wear, cleanliness, chips, cracks, and security?
Yes
No
N/A
4. 4. Are the brake disks checked for scoring, warping, and excessive wear, and ensure there are no loose or broken brake clips?
Yes
No
N/A
5. 5. Are the wheel and brake assembly inspected for cracks, dents, corrosion, leaks, loose bolts, defective paint, freedom of moving parts, and excessive wear?
Yes
No
N/A
6. 6. Are the axles checked for security, cleanliness, cracks, bends, and defective threads?
Yes
No
N/A
7. 7. Are the axle nuts properly adjusted and safe?
Yes
No
N/A
8. 8. Are the wheel bearings removed at tire rotation or replacement and is an inspection of cleanliness, rust, cracks, pits, scoring, brinelling, discoloration, excessive wear, and lubrication ensured?
Yes
No
N/A
9. 9. Is the main landing gear spring inspected for security, cracks, bends, deep scratches, dents, chipped or peeling paint, and loose brake lines?
Yes
No
N/A
10. 10. Are the tires verified for proper inflation, sufficient tread, cleanliness, cuts, blisters, breaks, and uneven wear?
Yes
No
N/A
11. 11. Is wheel alignment checked if tires show uneven wear?
Yes
No
N/A
12. 12. Is the tailwheel checked for lubrication, security, and cracks?
Yes
No
N/A
13. 13. Are tires checked for proper inflation, cuts, sufficient tread, breaks, and blisters?
Yes
No
N/A
14. 14. Are the tailwheel spring, steering, and anti-swivel mechanism checked for security?
Yes
No
N/A
15. 15. Is the parking brake inspected for proper operation, correct adjustment, security, and excessive wear, and ensured it fully releases?
Yes
No
N/A
16. 16. Are the P Ponk attach bolts checked for security and integrity?
Yes
No
N/A
17. 17. Is the retractable landing gear tested for physical retraction, both under normal retraction conditions and during emergency gear-down procedures?
Yes
No
N/A
18. 18. Are the retractable landing gear lights checked?
Yes
No
N/A
19. 19. Is the "in transit" light for the retractable landing gear verified?
Yes
No
N/A
20. 20. Is the gear horn on the throttle operational as intended?
Yes
No
N/A
21. 21. Is the oil in both the gearbox and the hydraulic reservoir for the retractable landing gear system verified?
Yes
No
N/A
Section 7: Airframe
1. 1. Are the pitot and static ports inspected for obstructions?
Yes
No
N/A
2. 2. Are the pitot and static lines checked for security, cracks, kinks, chafing, and any signs of moisture?
Yes
No
N/A
3. 3. Is the alignment of the pitot tube checked?
Yes
No
N/A
4. 4. Is the aircraft exterior inspected for cracks, metal distortion, broken spot welds, loose or missing rivets, screws, bolts, corrosion, condition of paint, and any other apparent damage or defects and empennage tips for damage?
Yes
No
N/A
5. 5. Is the aircraft structure examined for corrosion, cracks, metal distortion, loose or missing rivets, screws, and bolts, as well as evidence of excessive loads?
Yes
No
N/A
6. 6. Are the windows and windshield inspected for cleanliness, proper attachment, sealing, crazing, cracks, deep scratches, and discoloration?
Yes
No
N/A
7. 7. Are the door, window hinges, and latches checked for lubrication, alignment, proper operation, cracks, distortion, binding, and security?
Yes
No
N/A
8. 8. Are the seats verified for ease of movement, positive locking, and security?
Yes
No
N/A
9. 9. Are the seat stops looked at?
Yes
No
N/A
10. 10. Is the seat upholstery verified for rips, tears, holes, and cleanliness?
Yes
No
N/A
11. 11. Is the seat structure verified for cracks, bends, and corrosion?
Yes
No
N/A
12. 12. Are the seat rails checked for security, cracks, and damage?
Yes
No
N/A
13. 13. Are the safety belts examined for security and proper latching, and checked for cuts, tears, fraying, and broken stitching?
Yes
No
N/A
14. 14. Are the attaching parts checked for cracks, deformed metal, and excessive wear?
Yes
No
N/A
15. 15. Is the control column checked for security, binding, cracks, looseness, and restricted travel?
Yes
No
N/A
16. 16. Are the bearings, sprockets, and pulleys verified for cleanliness, lubrication, binding, security, and excessive wear?
Yes
No
N/A
17. 17. Are the cables and chains checked for security, cleanliness, corrosion, fraying, binding, broken links, and misalignment?
Yes
No
N/A
18. 18. Are the turnbuckles properly safe?
Yes
No
N/A
19. 19. Are the bell cranks inspected for cracks, distortion, and binding?
Yes
No
N/A
20. 20. Are the control wheels verified for alignment, binding, security, a bent tube, and excessive wear?
Yes
No
N/A
21. 21. Is the control lock operating properly and readily available?
Yes
No
N/A
22. 22. Are instruments examined for cracked glass, security, proper operation, cleanliness, and legibility of markings?
Yes
No
N/A
23. 23. Are the gyro instrument air filters checked?
Yes
No
N/A
24. 24. Is the magnetic compass checked for security, fluid discoloration, leaks, and lighting, and is proper operation ensured?
Yes
No
N/A
25. 25. Is the compass card legible?
Yes
No
N/A
26. 26. Are the instrument wiring and plumbing examined for security, chafing, leaks, cracks, kinks, defective insulation, and loose terminals, and is it ensured there is no interference with control column travel?
Yes
No
N/A
27. 27. Is the instrument panel checked for security, deteriorated shock mounts, cracks, damaged decorative cover, and legibility of all decals and labeling?
Yes
No
N/A
28. 28. Are defrosting, heating and ventilating systems checked for proper operation, security, chafing, and deterioration?
Yes
No
N/A
29. 29. Are the controls rigged, free from binding, and securely fastened?
Yes
No
N/A
30. 30. Are the ram air inlets checked for obstructions?
Yes
No
N/A
31. 31. Is the cabin upholstery and trim checked for cleanliness, rips, tears, and holes, and ensuring they are securely attached?
Yes
No
N/A
32. 32. Are the sun visors checked for security and proper operation?
Yes
No
N/A
33. 33. Is the area beneath the floor inspected for cleanliness, chafing, and security of lines, hoses, and electrical wires?
Yes
No
N/A
34. 34. Are the control cables checked for any signs of fouling?
Yes
No
N/A
35. 35. Is the proper operation and security of the stall warning horn verified?
Yes
No
N/A
36. 36. Are the electrical switches, circuit breakers, and fuses checked for security, proper functioning, and the legibility of placards?
Yes
No
N/A
37. 37. Are spare fuses available?
Yes
No
N/A
38. 38. Are the instruments and cabin lights checked for proper operation, security, and cleanliness?
Yes
No
N/A
39. 39. Is the instrument light rheostat verified?
Yes
No
N/A
40. 40. Are the radios and radio controls checked?
Yes
No
N/A
41. 41. Is the battery verified for servicing, security, and corroded terminals?
Yes
No
N/A
42. 42. Are the battery cables checked for the condition of terminals, security, and any defective insulation?
Yes
No
N/A
43. 43. Is the battery box examined for cracks, corrosion, damaged mounting, and brackets?
Yes
No
N/A
44. 44. Is the vent line checked for corrosion, security, and obstructions?
Yes
No
N/A
45. 45. Is the firewall inspected for proper sealing, security of grommets and shields, checked for cracks, dents, wrinkles, loose or missing rivets, screws, or bolts, and looked for evidence of excessive loads?
Yes
No
N/A
46. 46. Are the radio antennas verified for cleanliness, security, proper connections, corrosion, and cracked housings?
Yes
No
N/A
47. 47. Are the navigation lights, landing lights, flash beacons, and strobes inspected for proper operation, security, cleanliness, and cracked glass?
Yes
No
N/A
48. 48. Are the pitot heaters verified?
Yes
No
N/A
49. 49. Are the attachment and security of the door stewards checked?
Yes
No
N/A
Section 8: Aileron Control System
1. 1. Is the correct direction of movement of the ailerons verified when operated from the cabin?
Yes
No
N/A
2. 2. Are pulleys inspected for security, cleanliness, binding, misalignment, cracks, cracked or deformed pulley brackets, and chipped or broken flanges?
Yes
No
N/A
3. 3. Are cables checked for cleanliness, security of terminals, corrosion, fraying, correct tension, and safety of turnbuckles?
Yes
No
N/A
4. 4. Are bell cranks and push-pull rods verified for cleanliness, lubrication, security, binding, cracks, and distortion?
Yes
No
N/A
5. 5. Are the fairleads and cable guards inspected for security and signs of excessive wear?
Yes
No
N/A
6. 6. Is the aileron system checked for correct rigging and proper travel?
Yes
No
N/A
7. 7. Are the ailerons verified for security of attachment, smooth operation, security of balance weights, cracks, corrosion, and skin or structural damage?
Yes
No
N/A
Section 9: Flap Control System
1. 1. Are the pulleys inspected for security, cleanliness, binding, misalignment, cracks, cracked or deformed pulley brackets, and chipped or broken flanges?
Yes
No
N/A
2. 2. Are cables verified for cleanliness, security of terminals, corrosion, fraying, correct tension, and safety of turnbuckles?
Yes
No
N/A
3. 3. Are bell cranks and push-pull rods checked for cleanliness, lubrication, security, binding, cracks, and distortion?
Yes
No
N/A
4. 4. Are fair leads and cable guards checked for security and excessive wear?
Yes
No
N/A
5. 5. Is the flap system examined for correct rigging and proper travel?
Yes
No
N/A
6. 6. Is the flap control lever checked for security, proper operation of latch, lubrication, and binding?
Yes
No
N/A
7. 7. Are flaps inspected for the security of attachment, smooth operation, binding rollers, cracked, bent, or loose tracks, corrosion, and skin or structural damage?
Yes
No
N/A
Section 10: Elevator Control System
1. 1. Is the direction of movement for the elevators assessed for security, cleanliness, binding, misalignment, cracks, cracked or deformed pulley brackets, and chipped or broken flanges?
Yes
No
N/A
2. 2. Are the cables in the elevator system checked for cleanliness, security of terminals, corrosion, fraying, correct tension, and safetying of turnbuckles?
Yes
No
N/A
3. 3. Are the bell cranks and push-pull rods inspected for cleanliness, lubrication, security, binding, cracks, and distortion?
Yes
No
N/A
4. 4. Are fairleads and cable guards in the elevator system checked for security and excessive wear?
Yes
No
N/A
5. 5. Is the elevator system inspected to ensure correct rigging and proper travel?
Yes
No
N/A
6. 6. Are the elevators verified for security of attachment, smooth operation, security of balance weights, cracks, corrosion, and skin of structural damage?
Yes
No
N/A
Section 11: Stabilizer Trim Control System
1. 1. Are pulleys and sprockets inspected for security, cleanliness, binding, misalignment, cracks, cracked or deformed brackets, and chipped or broken flanges or teeth?
Yes
No
N/A
2. 2. Are cables and chains checked for cleanliness, security of terminals, corrosion, fraying, correct tension, broken or damaged links, and safetying of turnbuckle?
Yes
No
N/A
3. 3. Are fairleads, cable guards, and chain guards verified for security and excessive wear?
Yes
No
N/A
4. 4. Is the trim control wheel checked for lubrication, cleanliness, security, binding, and operation of friction stop and position indicator?
Yes
No
N/A
5. 5. Is the indicator inspected for correct indexing and legible markings?
Yes
No
N/A
6. 6. Are stabilizer actuators inspected for security, cleanliness, lubrication, proper operation, corrosion, cracks, and excessive wear?
Yes
No
N/A
7. 7. Is the trim control system checked for correct rigging and proper travel?
Yes
No
N/A
8. 8. Is the movable stabilizer verified for security of attachment, smooth operation, cracks, corrosion, and skin or structural damage?
Yes
No
N/A
Section 12: Rudder Control System
1. 1. Is the rudder examined for the correct direction of movement when operated from the cabin?
Yes
No
N/A
2. 2. Is the rudder pedal assembly inspected for binding, cleanliness, lubrication, security, cracks, bent linkage, and excessive wear?
Yes
No
N/A
3. 3. Are the pulleys checked for security, cleanliness, binding, misalignment, cracks, cracked or deformed pulley brackets, and chipped or broken flanges?
Yes
No
N/A
4. 4. Are the cables inspected for cleanliness, security of terminals, corrosion, fraying, correct tension on “closed” systems, and safetying of turnbuckles?
Yes
No
N/A
5. 5. Are fairleads and cable guards inspected for security and excessive wear?
Yes
No
N/A
6. 6. Is the rudder system inspected to ensure correct rigging and proper travel?
Yes
No
N/A
7. 7. Is the rudder inspected for security of attachment, smooth operation, security of balance weight, cracks, corrosion, and skin or structural damage?
Yes
No
N/A
Section 13: Emergency Locator Transmitter
1. 1. Is the ELT checked for proper function?
Yes
No
N/A
2. 2. Do the remote “on” and “reset” buttons work correctly?
Yes
No
N/A
3. 3. Are the battery replacement dates of both the ELT and the remote switch verified?
Yes
No
N/A
4. 4. Is FAR 91.207(d) compliance ensured?
Yes
No
N/A