Ground operation and servicing Flashcards
Name possible hazards that may be encountered during typical ground operations
Fire during engine start, turning propellers, rotors, jet blast, and turbine inlet areas. Other aircraft vehicles, people obstacles, foreign object debris
What is the most generally use knot for tying down small aircraft?
The bowline
Describe the precautions that should be taken to protect life and property while starting and running an aircraft engine
Study the procedures in the airplane flight manual, be sure the propeller or inlet area is clear and check the area for loose stones gravel debris that can be sucked into the prop or engine
If an engine induction fire occurs while starting a reciprocating engine, what procedure should be followed to extinguish the fire
Continue cranking the engine to start it and hopefully suck the fire into the engine. If the engine doesn’t start in the fire continues to burn discontinued to start a time shut off the fuel source extinguish the fire with a suitable fire extinguisher
What safety procedures must be observed on hand propping a small aircraft
Become thoroughly trained, have a qualified person in the cockpit, checked the brakes call switch off before moving the prop and make sure you have a solid footing. When ready to start, call contact and listen for the reply swing the prop with the flat of your hand and move back from the prop arc
What procedure should be followed prior to starting a large radial engine to detect and or prevent hydraulic lock in the cylinders
Pull the propeller through by hand for three or four revolutions resistance to the prop turning indicates a possible hydraulic lock at least one of the cylinders
What is the cause of hydraulic lock in large radial engines?
Oil seeps between the piston rings and accumulates in the combustion chamber of the lower cylinders
What damage is most likely to result from hydraulic lock?
Sufficient for us can be exerted on the crankshaft to bend, or break the connecting rod
What is a material safety data sheet?
A detailed chemical information sheet explaining health and safety risk when using the product
What are the safety precautions when using a drill press
Where I protection and air protection, clamp, all work, securely, proper RPM, for the material used stop machine to make adjustments to the work, or to remove jammed, work and clean the area when finished
When towing in aircraft with a tow vehicle, what breaks are used when the aircraft is to be stopped?
The tow vehicle breaks, the aircraft brakes should only be used in an emergency
What is meant by a hot start when starting a jet engine?
Ignition occurs with an excessively rich mixture, leading to a rapid temperature rise that can exceed the EGT limit
Why should a mechanic know the standard light signals at an airport?
Light signals bank may be used when taxiing an airplane without a radio, or when a radio becomes in operative of a tower controlled airport
If a mixture of aviation, gasoline and jet fuel is used in a reciprocating aircraft engine, order the possible results
Avgas contaminated by jet fuel, must not be used in piston engines. The engine may be damaged or destroyed.
When is pre-oiling of a reciprocating engine necessary
Pre-oiling is used before starting a new engine or an engine that has been preserved for storage