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20 Cards in this Set
- Front
- Back
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What is the proper way to extinguish an induction system fire that occurs when starting a reciprocating engine? |
Keep the engine running and blow out the fire, if this doesn't work use carbon dioxide fire extinguisher directed into the carburetor air inlet |
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What type of fire extinguisher is best suited for extinguishing an induction fire in a reciprocating engine? |
Carbon dioxide |
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What must be done if a hung start occurs when starting a turbojet engine? |
Terminate the starting operation and established the cause of the hung start |
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what is meant by a liquid lock in the cylinder of an aircraft engine, and how is one cleared? |
Liquid lock occurs when the oil accumulates in the cylinder below the center line of the engine, preventing the Piston from moving to the top of its stroke, to clear a liquid lock remove one of the spark plugs and turn the engine crankshaft until all of the oil is forced out of the cylinder |
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What precautions must be taken when towing an aircraft that is equipped with a steerable nose wheel? |
Make sure the nosewheel does not try to turn past it stops, in some aircraft the torsional links on the nosewheel strut are disconnected when the aircraft is being towed |
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When starting an aircraft equipped with a float carburetor in what position should the carburetor heat control be placed? |
The cold position |
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How far ahead of an idling tirbojet engine does the danger area extend? |
25 ft |
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Why is it important that turbine fuel not be mixed with Aviation gasoline that is used in an aircraft reciprocating engine? |
It will cause the engine to detonate |
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What grade of Aviation gosling is dyed blue? |
100 low-lead |
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What damage is likely to occur if an aircraft reciprocating engine that is designed to use 100 octane fuel is operated with an 80 octane fuel? |
Detonation which damages connecting rods, burns pistons and even cracks cylinders |
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What is meant by detonation in an aircraft reciprocating engine? |
An uncontrolled burning of the fuel in the cylinder of an engine, it's an explosion rather than a smooth burning |
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What is the danger of using a fuel that vaporizes too readily? |
It could cause a vapor lock in the fuel lines shutting off fuel supply to the engine |
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What type of fuel is a jet-A fuel? |
A heavy kerosene base fuel, with a flashpoint of 110 to 150° f and a freezing point of -40° f , heat energy content of 18600 BTU per pound |
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What is the significance of the two numbers 100 / 130 in the dual rating of Aviation gasoline |
The 100 number is the performance number of the fuel when operating with a lean mixture, and 130 is the octane performance number when operating with a rich mixture |
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What two functions of tetraethyl lead that is added to aviation gasoline? |
To improve the critical temperature and pressure of the fuel, and acts as a lubricant for the valves |
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What information must be located near the fuel tank filler opening in an aircraft powered by a reciprocating engine? |
The word "Avgas" and the minimum fuel grade |
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What information must be located near the fuel tank filler opening in an aircraft powered by a turbine engine? |
The word "Jet fuel" the permissible fuel designation or references to the airplane flight manual and the permissible pressure for a fueling or defueling |
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What action should a mechanic take while taxing an aircraft on a runway if the tower shines a flashing red light at him? |
He must taxi the aircraft clear of the runway in use |
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What publication lists the standard hand signals that are used for directing a taxing aircraft? |
ASA Aviation Maintenance Technician General Textbook page 629 |
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What should be done to a reciprocating engine fuel system if turbine fuel is inadvertently put into the tanks and the engine is run? |
Drain the entire fuel system, flush with gasoline, the engine must be given a compression check, drain the oil and all the filters and strainers checked and the aircraft is refueled and the engine must be given a proper run up check |
