Ground Operations And Servicing

Front 1

what is the procedure for extinguishing an induction system fire that occurs during starting a reciprocating aircraft engine

Back 1

if an engine induction fire develops, continue cranking and start the engine, this will suck the fire into the cylinders to burn, discontinue starting and the fireguard should extinguish the fire using a CO2 fire extinguisher

Front 2

what is the purpose of pulling the propeller through by hand for 2 or 3 revolutions prior to starting a radial or inverted engine

Back 2

to detect hydraulic lock. any liquid present in the cylinder will be indicated by abnormal effort required to rotate the propeller, or by the propeller stopping abruptly during rotation

Front 3

what damage is likely to occur if excessive force is exerted on the crankshaft when there is a liquid lock

Back 3

the force can bend or break a connecting rod or permanently damage the cylinder.

Front 4

what information must be present on or near fuel filler opening or oil filler openings

Back 4

fuel- the word "fuel" and the minimum fuel grade or designation for the engine.

oil- the word "oil" must be marked on or near the filler cap

Front 5

describe the system used to designate performance rating of aviation gasoline

Back 5

for fuels below grade 100, octane numbers are used. (such as 91/96. the fuel is compared with mixtures of iso-octane and normal heptane. thus, the grade 91 fuel has the same knock characteristics as a blend of 91% octane and 9% heptane, when two numbers are used the first number represents the lean mixture performance rating. the second number is the rich mixture performance rating.)

for fuels above grade 100, the numbers represent the performance rating of the fuel compared to 100% iso-octane. (that is, its knock free power available as compared with that available with pure iso-octane. the first number is the lean mixture performance rating. the second number is the rich mixture performance rating.)

Front 6

what would be the result of operating an aircraft reciprocating engine using a lower grade avgas than that specified for the engine

Back 6

here would be a loss of engine power, efficiency, and possible detonation

Front 7

why should an aviation mechanic know the meaning of the standard light signals which are used by control tower operations

Back 7

if radio communications are not possible, the light signals may be used for taxi control when an aircraft must be taxied to another part of the airport

Front 8

what publications lists the standard FAA hand signals a taxi signalman should use

Back 8

the FAA Airmans Information Manual (AIM)

Front 9

what is the result of mixing avgas with jet fuel in a turbine engine

Back 9

when avgas is mixed with jet fuel, the tetraethyl lead in the gasoline will form deposits on the turbine blades and vanes. continued use of a mixed fuel may cause a loss in engine efficiency. however, there will no detrimental effect on the engine if such usage is on a limited basis

Front 10

what may result if aviation gasoline that is contaminated with jet fuel is used on a reciprocating engine

Back 10

avgas which is contaminated with jet fuel is unsafe for use in a reciprocating engine and will in complete engine failure

Front 11

when towing a large aircraft with a tow tractor, what brakes should be used to stop the aircraft

Back 11

the tow tractor brakes and the aircraft brakes should both be used. use of the brakes should be coordinated by the person in the cockpit