ground operations and servicing Flashcards
what special precautions should be taken when towing an aircraft that is equipped with steerable nose wheel
be sure that the nose wheel does not try to turn past its stops. some aircraft require the torque links on the nose wheel strut to be disconnected when towing
what kind of rope is best to tie down an aircraft
nylon or polypropylene
what kind of knot is used for securing an airplane with a rope
bowline
what are the correct procedures to use when pressure fueling an aircarft
what are the most common aviation gasoline colors and corresponding grades
red-80
green-100
blue-100LL
Purple-115
what publication list the standard hand signals used for directing a taxiing aircraft
FAA aeronautical information manual and Aviation maintenance technician handbook-general
what action should a mechanic take while taxiing an aircraft on a runway if the tower shines a flashing red light at him
taxi the aircraft clear of the runway in use
when starting an aircraft engine equipped with a float carburetor, in what position should the carburetor heat control be placed
in the cold position
what is meant by a liquid lock in cylinder of an aircraft engine, and how is it cleared
oil accumulates in the cylinders below the center line of the engine and prevents the pistons from moving to the top of its stroke. to clear a liquid lock, remove one of the spark plugs and turn the engine crankshaft until all of the oil is forced out of the cylinder
what is the procedure if a hung start occurs when starting a turbojet engine
terminate the starting operation and find the reason the engine would not accelerate as it should
how far ahead of an idling turbojet engine does the danger area extend
25 ft
what are the control tower light signals that may be used when taxiing or towing an aircraft and what are their meanings-
Flashing green-cleared to taxi
steady red-stop
flashing red-taxi clear of runway in use
flashing white-return to starting point
alternating red and green-excise extreme caution
what is meant by detonation in an aircraft reciprocating engine
detonation is an uncontrolled burning of the fuel in the cylinder of an engine. it is an explosion rather than a smooth burning
what type of fire extinguisher is best suited for extinguishing an induction fire in an reciprocating engine
carbon dioxide (CO2)
what is proper way to extinguish an induction system fire that occurs when starting a reciprocating engine
keep the engine running, which will blow the fire out. If this does not work, use a CO2 fire extinguisher directed into the induction air inlet
when servicing an aicraft with air, nitrogen, oil, and other fluid, where are the proper procedures and equipment requirements found
consult the specific aircraft maintenance manual
what are the 3 types of oxygen that are commercially available
aviators breathing, industrial, and medical
is medical oxygen a suitable alternative for aviators breathing oxygen
no. medical oxygen contains moisture that can freeze in the cold temperatures found at higher altitudes
what grade of aviation gasoline is dyed blue
low-lead grade 100
what type of fuel is Jet-A
fuel with a heavy kerosine base, a flash point of 100-150 f , a freezing point of - 40f and a heat energy content of 18,600 BTU/pound
what are two functions of tetraethyl lead that is added to aviation gasoline
it increases the critical pressure and temperature of the fuel, and it acts as a lubricant for the valves
why is it important that turbine fuel not be mixed with aviation gasoline used in an aircraft reciprocating engine
the turbine engine fuel will cause the engine to detonate severely
what is the danger of using fuel that vaporizes too readliy
vapor lock can occur in the furl lines, this will shut off the fuel to the engine
how can an aviation mechanic reduce the risk of leaving tools in the aircraft
by using shadow boards of foam cutouts for each tool in their toolbox. Missing tools are easily identified by a quick review of the toolbox
why is it important that the aircraft and the fuel truck be grounded together before the aircraft is fueled
grounding prevents the buildup of static electricity that causes sparks that could ignite the fuel vapors
how should aircraft parts be protected
when stored on a shelf, sensitive equipment should remain in the original packaging or on padded shelves with measure taken to prevent parts from rolling or falling off storage shelves. Electronic equipment should remain in antistatic packaging. When moving aircraft parts to be installed on an aircraft, care should be taken to prevent the part from failing or becoming damaged until installation is complete
where can information be found specifying what personal protective equipment (PPE) should be used when working with specific hazardous materials
in the safety data sheet for the hazardous material
why is FOD (Foreign object damage) dangerous
FOD can lead to damage and failure of aircraft systems and engines
