Ground Operation and Servicing Flashcards
What is a hung start?
A start in which the engine lights off as it should, but does not accelerate to a speed that allows it to operate without help from the starter.
If an aircraft has a steerable nose wheel, why should the torque-link lock be set to full swivel?
The nose wheel torque-link lock should either be disconnected or set to full swivel, if this is not done, there is a good possibility that the tow bar can turn the nose wheel enough to break the steering stops.
What are some procedures to follow when you tie down small aircrafts and the different types of ropes that are used + disadvantages/advantages.
The airplanes should be pointed as nearly into the wind as practicable and the tail wheel or nose wheel should be locked in their straight-head position to prevent the wind slewing the aircraft around. Manila (hemp) rope has the tendency to shrink, not stretch, when it gets wet. Nylon and Dacron rope are superior because they are stronger, and neither of them shrink when they get wet.
Why is Carbon Dioxide the most satisfactory fire-extinguishing agent in aircraft engine fires?
It does not damage the engine and does not leave any residue to clean up.
What do these signals mean?
Signal 1 means to start the engine.
Signal 2 means to stop the rotor.
Signal 3 means to engage the rotor.
What is hydraulic lock?
A condition in a reciprocating engine in which oil has leaked past the piston rings into a cylinder below the center of the engine.
Starting a horizontally opposed aircraft engine equipped with a fuel-injection system.
1) Prime the engine by placing the mixture control in the FULL-RICH position and turning on the fuel boost pump until there is an indication of fuel flow on the fuel meter.
2) After some fuel has flowed through the injector nozzles, the mixture control is returned to the IDLE-CUTOFF position and the engine is started.
3) As soon as engine starts, the mixture control is again placed in the FULL-RICH position.
What does EGT,TIT, and ITT stand for?
Exhaust gas temperature, Turbine inlet temperature, Interstage turbine temperature.
What is a hot start?
The EGT or TIT rises above its allowable limit. Usually caused by too rich a fuel/air mixture. (There was too much fuel for the amount of air being moved through the engine by the compressor.)
What do these signals mean?
Signal 1 means to stop.
Signal 2 means to come ahead.
Signal 3 calls for an emergency stop.
Effect of aviation gasoline mixed with jet fuel on a turbine engine.
1) The tetraethyl lead in the aviation gasoline causes deposits to form on the turbine blades.
2) Aviation gasoline does not have the lubricating properties of kerosine. Using too much gasoline can cause an excessive wear on the fuel control.
What is weathervaning?
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come back to 8328.
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Meaning of light signals from the control tower
Flashing red - Taxi clear of the runaway/taxiaway
Steady red - Stop
Steady green- OK to taxi
Alternating red and green - OK to taxi, but exercise extreme caution
Flashing white- Return to starting point
