Ground Operation and Servicing

Question 1

During starting of a turbine powerplant using a compressed air starter, a hung start occurred. Select the
proper procedure.

Answer 1

shut the engine down

Question 2

A hung start in a jet engine is often caused by

Answer 2

starter cutting off soon

Question 3

Which statement below reflects a typical requirement when towing some aircraft?

Answer 3

if the aircraft has a steerable nosewheel, the torque-link lock should be set to full swivel

Question 4

Which statement(s) is/are true regarding tiedown of small aircraft?
1. Manila (hemp) rope has a tendency to stretch when it gets wet.
2. Nylon or dacron rope is preferred to manila rope.
3. The aircraft should be headed downwind in order to eliminate or minimize wing lift.
4. Leave the nosewheel or tailwheel unlocked.

Answer 4

2

Question 5

When approaching the front of an idling jet engine, the hazard area extends forward of the engine
approximately

Answer 5

25 feet

Question 6

Which of the following is the most satisfactory extinguishing agent for use on a carburetor or intake fire?

Answer 6

carbon dioxide

Question 7

(Refer to Figure 50.) Identify the signal to engage rotor on a rotorcraft.

Answer 7

3

Question 8

If a radial engine has been shut down for more than 30 minutes, the propeller should be rotated
through at least two revolutions to

Answer 8

check for hydraulic lock

Question 9

The priming of a fuel injected horizontally opposed engine is accomplished by placing the fuel control
lever in the

Answer 9

full rich position

Question 10

The most important condition to be monitored during start after fuel flow begins in a turbine engine is
the

Answer 10

EGT, TIT, and ITT

Question 11

Which of the following conditions has the most potential for causing engine damage when starting or
attempting to start a turbine engine?

Answer 11

hot start

Question 12

How is a flooded engine, equipped with a float-type carburetor, cleared of excessive fuel?

Answer 12

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 charged has been cleared

Question 13

(Refer to Figure 51.) Which marshalling signal should be given if a taxiing aircraft is in imminent danger
of striking an object?

Answer 13

3

Question 14

Generally, when an induction fire occurs during starting of a reciprocating engine, the first course of
action should be to

Answer 14

continue cranking and start the engine if posibble

Question 15

When starting and ground operating an aircraft’s engine, the aircraft should be positioned to head into
the wind primarily

Answer 15

for engine cooling purposes

Question 16

When approaching the rear of an idling turbojet or turbofan engine, the hazard area extends aft of the
engine approximately

Answer 16

100 feet

Question 17

If a hot start occurs during starting of a turbine powerplant, what is the likely cause?

Answer 17

the fuel/air mixture was excessively rich

Question 18

What effect, if any, will aviation gasoline mixed with jet fuel have on a turbine engine?

Answer 18

the tetraethyl lead in the gasoline forms deposits on the turbine blades

Question 19

(1) Jet fuel is of higher viscosity than aviation gasoline and therefore holds contaminants better.
(2) Viscosity has no relation to contamination of fuel.
Regarding the above statements,

Answer 19

only no. 1 is true

Question 20

When towing a large aircraft

Answer 20

a person should be In the cockpit to operate the brakes

Question 21

Weather vaning tendency is greatest when taxiing

Answer 21

a tail wheel type airplane in a direct crosswind

Question 22

When taxiing an airplane with a quartering tailwind, the elevators and

Answer 22

upwind aileron should be held in the down position

Question 23

When taxiing (or towing) an aircraft, a flashing red light from the control tower means

Answer 23

move clear of the runway/taxiway immediately

Question 24

A person should approach or leave a helicopter in the pilot’s field of vision whenever the engine is
running in order to avoid

Answer 24

tail rotor

Question 25

When taxiing (or towing) an aircraft, a flashing white light from the control tower means

Answer 25

return to starting point

Question 26

When taxiing (or towing) an aircraft, an alternating red and green light from the control tower means

Answer 26

ok to proceed but use extreme caution

Question 27

When stopping a nosewheel-type airplane after taxiing (or towing), the nosewheel should be left

Answer 27

pointed straight ahead

Question 28

When first starting to move an aircraft while taxiing, it is important to

Answer 28

test the brakes

Question 29

The color of 100LL fuel is

Answer 29

blue

Question 30

How are aviation fuels, which possess greater antiknock qualities than 100 octane, classified?

Answer 30

by performance number

Question 31

Why is ethylene dibromide added to aviation gasoline?

Answer 31

scavenge lead oxide from the cylinder combustion chambers

Question 32

Both gasoline and kerosene have certain advantages for use as turbine fuel. Which statement is true in
reference to the advantages of each?

Answer 32

kerosene has higher heat energy/value per unit volume than gasoline

Question 33

What must accompany fuel vaporization?

Answer 33

an absorption of heat

Question 34

Characteristics of detonation are

Answer 34

rapid rise in cylinder pressure, excessive cylinder head temperature, and a decrease in engine
power

Question 35

A fuel that vaporizes too readily may cause

Answer 35

vapor lock

Question 36

Jet fuel number identifiers are

Answer 36

type numbers and have no relation to the fuel’s performance in the aircraft engine

Question 37

Jet fuel number identifiers are

Answer 37

lead content and color

Question 38

Characteristics of aviation gasoline are

Answer 38

high heat value, high volatility

Question 39

Tetraethyl lead is added to aviation gasoline to

Answer 39

improves the gasoline performances in the engine

Question 40

A fuel that does not vaporize readily enough can cause

Answer 40

hard starting