Maintenance Tools and Equipment Flashcards
6 cards from real CAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Maintenance Tools and Equipment flashcards as text
What is the purpose of a tachometer in aircraft engine maintenance testing?
Answer: To measure engine rotational speed (RPM) to verify correct operating range and governor response
A tachometer measures engine RPM, allowing technicians to verify the engine is operating within specified speed ranges and that governor or fuel control units are functioning correctly during ground runs.
What is the function of a hydraulic test stand in aerospace maintenance?
Answer: To supply, circulate, and measure hydraulic fluid flow and pressure to test aircraft hydraulic systems on the ground
A hydraulic test stand provides controlled hydraulic fluid flow and pressure, enabling technicians to actuate and test aircraft hydraulic systems (landing gear, flight controls, brakes) during ground maintenance.
What precaution must always be observed when using power tools near aircraft fuel systems?
Answer: Ensure the area is purged of fuel vapors and all ignition sources are eliminated
Fuel vapors are highly flammable; all ignition sources (sparks, open flames, hot surfaces) must be eliminated and the area ventilated before using power tools near fuel systems.
Which tool is used to measure the inside diameter of a cylinder bore to check for wear or out-of-round condition?
Answer: Telescoping gauge and micrometer, or a dial bore gauge
A telescoping gauge (used with a micrometer for measurement) or a dial bore gauge directly measures cylinder bore diameter to detect wear, taper, or out-of-round conditions beyond limits.
What is the purpose of a compression tester in reciprocating engine maintenance?
Answer: To measure the ability of each cylinder to hold compressed air, indicating the condition of valves, piston rings, and cylinder walls
A differential compression tester applies regulated air pressure to each cylinder and measures pressure drop to diagnose valve leakage, ring wear, and cylinder wall condition.
When selecting a drill bit for drilling aluminum aircraft skin, what type of bit geometry is preferred?
Answer: A bit with a 118° or 135° point angle specifically designed for aluminum to produce clean holes without tearing
Drill bits designed for aluminum have specific point angles and flute geometry to cut cleanly without work-hardening or tearing the soft metal, preventing stress concentrations at the hole edge.