Ground ops Flashcards
(Refer to Figure 50.) Identify the signal to engage rotor on a rotorcraft
3
During starting of a turbine powerplant using a compressed air starter, a hung start occurred. Select the proper procedure
Shut the engine down
Characteristics of a detonation are
Rapid rise in cylinder pressure, excessive cylinder had temperature, and a decrease in engine power
if a hot start occurs during starting of a turbine powerplant, what is the likely cause?
The fuel/air mixture was exceedingly rich
If a radial engine has been shut down for more than 30 minutes, the propeller should be rotated through at least two revolutions to
Check for hydraulic lock
When first starting to move an aircraft while taxiing, it is important to
Test the brakes
A person should approach or leave a helicopter in the pilot’s field of vision whenever the engine is running in order to avoid
The tail rotor
How are aviation fuels, which passes greater antiknock qualities than 100 octane, classified?
By performance numbers
When stopping a nose wheel type airplane after taxiing (or towing) the nose wheel should be left
Pointed straight ahead
If an engine fire develops during the starting procedures the first step you should take in the extinguishing the fire is
Continue cranking to start the engine & blow out the fire.
Why is the ethylene dibromide added to aviation gasoline?
To scavenge lead oxide from the cylinder combustion chambers.
The most important condition to be monitored during start after fuel flow begins in a turbine engine is the
EGT, TIT, or ITT
The color of 100LL fuel is
Blue
Jet fuel number identifiers are
Type numbers and have no relation to the fuel’s performance in the aircraft engine
When starting and ground operating an aircraft’s engine. the aircraft should be positioned to head into the wind primarily
For engine cooling putpose
When taxiing (or towing) an aircraft, an alternating red and green light from the control tower means
OK to proceed but use extreme caution
Tetraethyl lead is added to aviation gasoline to
Improve the gasoline’s performance in the engine.
Which of the following conditions has the most potential for causing engine damage when starting or attempting to start a turbine engine?
Hot start
When taxiing an airplane with a quartering tailwind, the elevators and
Upwind aileron should be held in the down position
A hung start in a jet engine is often caused by
The starter cutting off too soon.
How is a flooded engine, equipped, with a float-type carburetor, cleared of excessive fuel?
Crank the engine with the starter or by hand, with the mixture control in cut-off, ignition switch off, and the throttle fully open, until the fuel charge has been cleared
Weathervaning tendency is greatest when taxiing
A tailwheel-type airplane in a direct crosswind
1) Jet fuel is higher viscosity than aviation gasoline and therefore holds contaminants better.
2) Viscosity has no relation to contamination of fuel.
Regarding the above statements,
Only no.1 is true
The priming of a fuel injected horizontally opposed engine is accomplished by placing the fuel control lever in the
FULL-RICH position
