Engine Inspection practice questions

Answer: C) A hard, cracked outer cover or a bulge in the hose wall

Flexible hoses that are hardened, cracked or bulging are deteriorated and must be replaced. Proper slack, a straight lay line and protective fire sleeves are normal installation features.

• AIncorrect. Flexible hose should be installed with some slack, because a hose can shorten when pressurized. Slack is required, not a defect.
• BIncorrect. A straight lay line shows the hose was installed without twisting, which is the correct condition.
• CCorrect. Hardening, cracking and bulging all show the hose is deteriorating and may burst or leak in service, so it must be replaced.
• DIncorrect. Fire sleeves are commonly fitted to protect hoses in fire zones. A fire sleeve is not a reason to reject the hose.

Answer: C) Carry people for hire

• AIncorrect. Storage does not trigger it.
• BIncorrect. Private use requires an annual only.
• CCorrect. It applies to aircraft carrying persons for hire or used for hired flight instruction.
• DIncorrect. Engine type does not decide it.

Answer: A) Clean the area, run the engine, and re-inspect to find where the oil is coming from

14 CFR Part 43 Appendix D requires the engine section to be inspected for evidence of oil, fuel or hydraulic leaks and for the sources of those leaks. A fresh stain must be traced to where it starts, not just cleaned, deferred or guessed at.

• ACorrect. Appendix D requires the engine section to be inspected for visual evidence of excessive oil, fuel or hydraulic leaks and for the sources of those leaks. Cleaning the area and running the engine is a standard way to find where the leak starts.
• BIncorrect. The inspection requires the source of the leak to be found now. Putting it off to a later inspection does not meet the requirement.
• CIncorrect. You cannot judge a fresh stain to be acceptable seepage until you know where it comes from. Appendix D specifically requires the sources of leaks to be inspected.
• DIncorrect. Oil can run along the crankcase far from where it leaks out. Replacing the nearest gasket without confirming the source may not fix the actual leak.

Answer: A) Defects, improper travel, and improper safetying

14 CFR Part 43 Appendix D requires engine controls to be inspected for defects, improper travel and improper safetying. For rod ends, this means checking wear and play, full travel, and proper safety devices.

• ACorrect. Appendix D(d) lists engine controls to be inspected for defects, improper travel and improper safetying. That covers rod end wear and play, full travel, and proper safety devices.
• BIncorrect. These are the Appendix D criteria for the engine mount, not the engine controls.
• CIncorrect. These match the Appendix D criteria for lines, hoses and clamps, not the engine controls.
• DIncorrect. Poor condition and deterioration are the criteria for flexible vibration dampeners, and improper torquing applies to studs and nuts. None of these are the engine control criteria.

Answer: D) Pulse-echo ultrasonic inspection

Ultrasonic inspection is a volumetric method that finds internal flaws from the echoes of sound waves. Dye penetrant, magnetic particle and eddy current are limited to surface or near-surface defects.

• AIncorrect. Dye penetrant only finds defects open to the surface, because the penetrant has to seep into the opening.
• BIncorrect. Magnetic particle inspection only finds surface and near-surface flaws, and only in ferromagnetic materials. Many turbine disks are made of non-magnetic alloys.
• CIncorrect. Eddy current works well for surface and shallow subsurface cracks in conductive materials, but it does not reach far into thick sections.
• DCorrect. Ultrasonic inspection sends high-frequency sound into the part. Reflections from internal discontinuities reveal flaws deep inside the material, and only one side needs to be accessible.

Answer: B) Cracks show best when they cross the field

• AIncorrect. The method needs ferrous parts.
• BCorrect. Each method reveals a different crack direction.
• CIncorrect. That isn't relevant.
• DIncorrect. Demagnetizing is separate.

Answer: A) Be run and broken in per the manufacturer

• ACorrect. Check for leaks and follow break-in guidance.
• BIncorrect. A ground run is needed.
• CIncorrect. Break-in oil is usually specified.
• DIncorrect. Break-in usually uses higher power.

Answer: A) When the method is acceptable to the FAA Administrator

14 CFR 43.13(a) requires the methods in the current manufacturer's maintenance manual or ICA, or other methods, techniques, and practices acceptable to the Administrator. It does not require manufacturer approval, FAA witnessing, or an IA holder.

• ACorrect. Section 43.13(a) allows the methods, techniques, and practices in the current manufacturer's maintenance manual or ICA, or other methods, techniques, and practices acceptable to the Administrator.
• BIncorrect. Section 43.13(a) doesn't require the manufacturer to approve methods outside its manual. It allows any methods acceptable to the Administrator.
• CIncorrect. Section 43.13(a) has no requirement for an FAA inspector to witness the work. The test is whether the method is acceptable to the Administrator.
• DIncorrect. Holding an inspection authorization doesn't make a method acceptable. Section 43.13(a) applies to the method itself, no matter who signs for the work.

Answer: A) Advisory only

• ACorrect. Service bulletins become mandatory only when required, such as by an AD.
• BIncorrect. They are advisory unless required.
• CIncorrect. They are manufacturer documents.
• DIncorrect. They apply to all products.

Answer: B) The method of compliance, the AD number, and revision date

14 CFR 91.417(a)(2)(v) requires the AD status record to show, for each applicable AD, the method of compliance, the AD number, and the revision date. A 43.9 maintenance record entry for the work is also required.

• AIncorrect. The AD number is required, but 91.417 does not require cost or labor hours. It does require the method of compliance and the revision date.
• BCorrect. 14 CFR 91.417(a)(2)(v) requires the current status of applicable ADs, including for each AD the method of compliance, the AD number, and the revision date.
• CIncorrect. The rule does not require the issuing engineer's name. It requires the method of compliance, the AD number, and the revision date.
• DIncorrect. A date and signature are part of a 14 CFR 43.9 maintenance entry, but the 91.417 AD status record must also show the method of compliance, the AD number, and the revision date.