Engine & Powerplant Inspection Procedures Flashcards
6 cards from real IA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Engine & Powerplant Inspection Procedures flashcards as text
During an annual inspection, the IA checks the magneto-to-engine timing. What is the risk of advanced timing?
Answer: Preignition and detonation that can damage pistons and cylinders
Timing that is too far advanced causes the fuel-air charge to ignite before the piston reaches the correct position, leading to preignition and potentially destructive detonation.
What is the purpose of inspecting engine baffling and cooling fins during an annual?
Answer: To ensure proper airflow directs cooling air over the cylinders and prevents overheating
Baffles direct cooling airflow over the cylinders; damaged or missing baffles cause hot spots and can lead to accelerated engine wear or failure.
When should an IA inspect the engine fuel system for leaks during an annual?
Answer: With fuel on and the system pressurized, and again after run-up
Fuel system leak checks should be done with the system pressurized (fuel on) and confirmed after an engine run-up to ensure no leaks exist under operating conditions.
What is the significance of the engine oil analysis (spectrographic analysis) in determining engine condition?
Answer: It detects trace metal elements that indicate wear of specific internal components
Spectrographic oil analysis identifies metals like iron, chrome, aluminum, and copper, each associated with specific internal components, to trend wear before failure.
An IA inspects a turbocharged engine's induction system. What failure would be particularly dangerous if missed?
Answer: Cracks or leaks in the turbocharger housing allowing hot exhaust gases near fuel or airframe
Cracks in the turbocharger housing can allow extremely hot exhaust gases to escape near fuel lines, wiring, or the airframe, creating a severe fire hazard.
What does the IA verify about an engine's crankcase breather system during an annual inspection?
Answer: That the breather tube is routed overboard and free from ice or obstruction
The crankcase breather must be unobstructed and routed to vent overboard so that crankcase pressure can escape without building up and causing oil leaks or seal failure.
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