Ground Operation and Servicing

Question 1

During starting of a turbine power-plant using a compressed air starter, a hung start occurred. What is the proper procedure?

Answer 1

Shut the engine down.

Question 2

A hung start in a jet engine is often cause by…

Answer 2

The starter cutting off too soon.

Question 3

What statement reflects a typical requirement when towing some aircraft?

Answer 3

If the aircraft has a steerable nose-wheel, the torque-link lock should be set to full swivel.

Question 4

What statement is true regarding tie-down of small aircraft?

Answer 4

Nylon or Dacron rope is preferred to Manila rope.

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

What is the most satisfactory extinguishing agent for use on a carburetor or intake fire?

Answer 6

Carbon Dioxide.

Question 7

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 7

Check for hydraulic lock.

Question 8

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

Answer 8

FULL-RICH position.

Question 9

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

Answer 9

EGT, TIT, or ITT.

Question 10

What condition has the most potential for causing engine damage when starting or attempting to start a turbine engine?

Answer 10

Hot start.

Question 11

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

Answer 11

Crank the engine with the starter or by hand, with the mixture control in cutoff, ignition switch off, and the throttle fully open, until the fuel charge has been cleared.

Question 12

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

Answer 12

Continue cranking and start the engine if possible.

Question 13

If a fire develops in an engine during the starting procedure, you should…

Answer 13

Continue cranking to start the engine and extinguish the fire.

Question 14

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

Answer 14

For engine cooling purposes.

Question 15

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

Answer 15

100 feet.

Question 16

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

Answer 16

The fuel/air mixture was excessively rich.

Question 17

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

Answer 17

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

Question 18

(1) Jet fuel is of higher viscosity than aviation gasoline and therefore holds contaminants more readily

(2) Viscosity has no relation to contamination of fuel.

Regarding the above statements,

Answer 18

Only 1 is true.

(Kind of…)

Question 19

When towing a large aircraft…

Answer 19

A person should be in the cockpit to operate the brakes.

Question 20

Weathervaning tendency is greatest when taxiing…

Answer 20

A tailwheel-type airplane in a direct crosswind.

Question 21

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

Answer 21

Upwind aileron should be held in the down position.

Question 22

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

Answer 22

Move clear of the runaway/taxiway immediately.

Question 23

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 23

The tail rotor.

Question 24

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

Answer 24

Return to starting point.

Question 25

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

Answer 25

OK to proceed but use extreme caution.

Question 26

When stopping a nose wheel-type airplane after taxiing, the nose wheel should be left…

Answer 26

Pointed straight ahead.

Question 27

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

Answer 27

Test the brakes.

Question 28

The color of 100LL fuel is…

Answer 28

Blue.

Question 29

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

Answer 29

By performance numbers.

Question 30

Why is ethylene dibromide added to aviation gasoline?

Answer 30

To scavenge lead oxide from the cylinder combustion chambers.

Question 31

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

Answer 31

Kerosene has a higher heat energy/value per unit volume than gasoline.

Question 32

What must accompany fuel vaporization?

Answer 32

An absorption of heat.

Question 33

Characteristics of detonation are…

Answer 33

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

Question 34

A fuel that vaporizes too readily may cause…

Answer 34

Vapor lock.

Question 35

Jet fuel number identifiers are…

Answer 35

Type number and have no relation to the fuel’s performance in the aircraft engine.

Question 36

The main differences between grades 100 and 100LL fuel are…

Answer 36

Lead content and color.

Question 37

Characteristics of aviation gasoline are…

Answer 37

High heat value, high volatility.

Question 38

Tetraethyl lead is added to aviation gasoline to…

Answer 38

Improve the gasoline’s performance in the engine.

Question 39

A fuel that does not vaporize readily enough can cause…

Answer 39

Hard starting.