Shared Flashcard Set

Details

Ground Operation and Servicing-DME Oral
General ASA 22 Questions
21
Aviation
Undergraduate 1
09/05/2015

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Cards

Term
What is the procedure for extinguishing reciprocating engine induction system fires that occur during starting?
Definition
Continue cranking the engine to draw in the fire while maintaining the starting procedures. If the engine does not start and the fire continues to burn, stop and have the fireguard extinguish the fire
Term
What are the results of using aviation gas that has been contaminated with jet fuel, in a reciprocating engine?
Definition
Turbine fuel is unsafe for use in reciprocating engines and could cause damage or failure
Term
What information must be located adjacent to fuel and oil filler openings?
Definition

The fuel filler opening must be clearly marked with the words:

Fuel, tank capacity and type of fuel.

The oil filler opening must be clearly marked with the words:

Oil and capacity

Term
Describe the system used by aircraft fuel suppliers to designate performance rating of aviation gasoline.
Definition
Aviation fuel has two scales to designate fuel grade: Example I00\130. The lower number designates the lean mixture rating and the higher number designates the rich mixture rating
Term
What procedure should be followed before starting a reciprocating engine to detect liquid locking of the cylinders?
Definition
Turn the engine over three or four complete revolutions by hand to detect a liquid lock. Never use force when a liquid lock is detected
Term
What damage is most likely to result from liquid lock?
Definition
Sufficient force can be exerted on the crankshaft to bend or break a connecting rod
Term
What methods should be used to aid reciprocating engine starts in cold weather?
Definition

Use of pre-heat and oil dilution as needed

Proper mixture and priming procedures recommended by the manufacturer for the engine/carburetor combination

Term
How do you determine the presence of water in aircraft fuel when draining fuel sumps?
Definition
By using a clean clear container, the water will appear as droplets at the bottom of the container
Term
May automotive gasoline be used in an aircraft engine?
Definition
Only if its approved by the FAA in an STC and the TCDS should be checked for limitations
Term
What is meant by the term "HOT START" when starting an aircraft turbojet (turbine) engine?
Definition
When the engine starts and the EGT exceeds specified limits
Term
When and why is pre-oiling of a reciprocating engine necessary?
Definition
To provide adequate lubrication on initial start of a new engine or one that has been preserved for storage
Term
When refueling an aircraft, what precautions should be taken?
Definition

Use of correct fuel

Proper grounding of aircraft and refueling unit

Protection of aircraft surface from hose or nozzle damage and fuel spillage hazard.

Term
Where are aircraft taxi hand signals published?
Definition
AIM-Airman's Information Manual
Term
Why should aviation mechanics know standard light signals?
Definition
For taxi control when taxiing
Term
When towing an aircraft with a tow-tractor, what brakes are used when the aircraft is to be stopped?
Definition
The tow-tractor brakes, the aircraft brakes should only be used in emergency conditions
Term
What type of knots should be used when securing rope to secure light aircraft?
Definition
Anti-slip knots like the bowline
Term
What are the starting safety procedures when hand propping a small engine?
Definition

Fuel on, brakes on

Switch off, throttle closed

Contact is called and the switch is turned on

Be sure the ground is firm and do not lean into propeller arc

Term
What are the physical and safety requirements for starting and running a powerplant?
Definition
Use proper starting checklist. Position aircraft into the wind. Check prop blast area. Secure external power cart and use a fireguard
Term
What would be the result of operating an engine with a lower grade of gasoline than specified?
Definition

Loss of engine power and efficiency

The probability of overheating and engine damage

Term
What are the results of using aviation gas in a turbine engine?
Definition

A limited operation may be allowed by the manufacturer. Additives can develop deposits on turbine blades and vanes which may cause a loss in engine efficiency

Reduced service life and possible engine damage

Term
What does the number 100 refer to in 100LL aviation gasoline?
Definition
It is the lean mixture performance number or octane rating for the fuel
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