Engine Inspection

Study Materials

AMT-P, FAA-H-8083-32, 14 CFR Parts 43 and 91,
AC 43.13-1

Typical Oral Questions

  1. What determines whether or not a 100-hour inspection is required for an aircraft?

    100-hour inspections are required only on aircraft that carry persons for hire or are used to give flight instruction for hire.

  2. Where can you find a list of items that should be inspected on a 100-hour and an annual inspection of an aircraft engine?

    In Appendix D of 14 CFR Part 43.

  3. In what publication can a mechanic find the operating limitations for an aircraft engine?

    In the Type Certificate Data Sheets for the engine.

  4. Who is authorized to perform the powerplant inspection that is required for an annual inspection?

    An A&P mechanic who holds an Inspection Authorization.

  5. What are two types of compression checks that can be performed on an aircraft reciprocating engine?

    A differential compression check and a direct compression check.

  6. What items are checked in a hot section inspection of a turbine engine?

    The combustion section is checked for cracks or distortion. The turbine wheel, the turbine case, and the exhaust section are checked for cracks, indications of overheating, and any indication of warpage, erosion, or burning.

  7. What is the most common type of damage that is found in the hot section of a turbine engine?

    Cracks that are caused by the high concentration of heat in the hot section.

  8. Is the use of a checklist required when performing an annual or 100-hour inspection on an aircraft engine?

    Yes.

  9. What inspection must be performed on an aircraft reciprocating engine if it has been operated on turbine fuel?

    The inside of the cylinders must be inspected with a borescope. The oil must be changed and the filters examined, and the engine given a careful run-up and operational check.

Typical Practical Projects

  1. Perform a compression check on a reciprocating engine specified by the examiner.
  2. Using the correct reference material, perform a hot-start inspection on a turbine engine.
  3. Using the correct reference material, perform an overspeed inspection on a turbine engine.
  4. Explain to the examiner the things that should be checked for in a hot-section inspection on a turbine engine.
  5. Using the correct information, make a list of all of the Airworthiness Directives that are applicable to a particular aircraft powerplant.
  6. Check the aircraft maintenance records to determine whether or not all of the applicable Airworthiness Directives have been complied with.
  7. Perform a 100-hour inspection of an aircraft engine specified by the examiner and list all of the discrepancies that would cause the engine to be unairworthy.
  8. Check the applicable publications and determine whether or not the engine and propeller that are installed on a particular aircraft are certificated for it.
  9. Make a maintenance record entry of a 100-hour inspection that has been conducted for an aircraft engine.
  10. Locate the data plate on a turbine engine and explain to the examiner the meaning of the various limitations that are listed on it.
  11. Demonstrate to the examiner the correct way to connect a Jetcal analyzer to a turbine engine to measure the exhaust gas temperature and the engine RPM.
  12. Perform a borescope inspection of the cylinders of a reciprocating engine.
  13. Perform a borescope inspection of the internal portion of a turbine engine specified by the ­examiner.

[10-2024]