Ground Handling & Servicing Oral

Front 1

Name at least three possible hazards that may be encountered during typical ground operations such as during engine run up or taxiing

Back 1

1. the possibility of fire, especially during engine starting
2. turning props, rotors, prop or jet blast and inlet areas
3. other aircraft, vehicles, people and obstacles
4. Foreign objects such as rocks, gravel, rags, or loose hardware
5. high noise levels that might cause hearing damage
6. hydraulic lock in radial engines
7. weathervaning of tailwheel aircraft.

Front 2

What is the most generally used knot for tying down small aircraft's

Back 2

the BOWLINE

Front 3

Describe the precautions that should be taking to protect life and property while starting and running an aircraft engine

Back 3

1. Study the procedures in the flight manual
2. be sure the propeller or inlet area is clear and check for loose stones, gravel, etc that could be sucked in
3. ensure the prop or jet blast doesnt blow into hangars or other airplanes
4. have a fireguard nearby

Front 4

If an engine induction fire occurs while starting a reciprocating engine what procedure should be followed to extinguish the fire

Back 4

continue cranking the engine to start it and suck the fire into the engine. if the engine doesnt start and the fire continues then discontinue start attempt and extinguish the fire with a suitable fire extinguisher

Front 5

What safety procedures must be observed when hand propping a small aircraft engine

Back 5

1. Become thoroughly trained
2. have a qualified person in the cockpit, check brakes, call SWITCH OFF before moving the prop & make sure you have solid footing.
4. when ready to start call CONTACT and listen for reply
5. swing prop with the flat of your hand and move back from the prop arc

Front 6

What procedure should be followed prior to starting a large radial engine to detect and/or prevent a hydraulic lock in the cylinders

Back 6

Pull the prop through by hand for 3 or 4 complete revolutions. Resistance to the prop turning indicates a possible hydraulic lock in at least one of the cylinders.

Front 7

What is meant by HOT START when starting a jet engine

Back 7

Ignition occurs with an excessively rich mixture leading to a rapid temperature rise that can exceed the exhaust gas temperature limit

Front 8

What is the cause of hydraulic lock in large radial engines

Back 8

Oil seeps by the piston rings and accumulates in the combustion chamber of lower cylinders. when a pistion comes up on its compression stroke, the incompressable liquid seizes it.

Front 9

When towing an aircraft should you use the tow vehicle or aircraft brakes to stop the aircraft

Back 9

The tow vehicle brakes should be used except in an emergency- then the aircraft brakes may be used.

Front 10

Why should an aircraft technician become familiar with standard light signals

Back 10

Light signals may be used when taxiing an airplane without a radio or when a radio becomes inoperative on a tower controlled airport.

Front 11

If a mixture of aviation gasoline and jet fuel is used in a reciprocating aircraft engine what are the possible results

Back 11

Avgas contaminated by jet fuel must not be used in piston engine - the engine may be damaged or destroyed.

Front 12

What does the number 100 signify in 100LL aviation gas

Back 12

it refers to the lean mixture performance number of the fuel.
OCTANE RATING

Front 13

Is it permissible to use avgas in a turbine engine

Back 13

Limited operation may be allowed by the manufacturer. Continued use may reduce efficiency due to lead deposits on the turbine blades.

Front 14

What are some of the possible outcomes of using a lower grade of avgas than the specified grade

Back 14

An increased chance of engine damage due to detonation, loss of engine power, and and increased probabilty of overheating

Front 15

Part 23.973 of the FAA regulations specifies that certain markings must be placed adjacent to fuel filler openings what Markings are used for reciprocating engine powered airplanes

Back 15

The filler opening must be marked with
1.the fuel grade
2. the word "AVGAS"

Front 16

Describe the important precautions that should be observed when feuling an aircraft

Back 16

1. Be certain you are using the correct fuel.
2. properly ground the aircraft and refueling unit
3. protect the aircraft surfaces from hose & nozzle damage.

Front 17

The marking requirements for oil tank filler openings are specified by far 23.1157 what markings are required for piston engine powered airplane

Back 17

The word "OIL" and the permissable grades and/or types or a reference to the appropriate AIRPLANE FLIGHT MANUAL for permissable grades and/or types

Front 18

Where can the standard aircraft taxi hand signals be found

Back 18

In the AIM- AERONAUTICAL INFORMATION MANUAL

Front 19

Under what conditions should a reciprocating engine be pre-oiled

Back 19

Prior to starting a new engine or one that has been preserved for storage. This ensures adequate lubrication on initial startup

Front 20

Under what conditions may automobile gas be used in an aircraft engine

Back 20

Only if approved by the FAA, usually by the issuance of a STC- SUPPLEMENTAL TYPE CERTIFICATE

Front 21

What are the indications of water in aircraft fuel after draining a sample from the fuel sumps

Back 21

The sample may have a cloudy or hazy appearence or a solid slug of water