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20 Cards in this Set
- Front
- Back
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Why do some aircraft have fuel jettison systems? |
To allow the crew to reduce the weight of the aircraft down to or below the maximum allowable landing weight |
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Is there any reason why a fuel jettison system might be required on a small aircraft? |
Yes, if the maximum takeoff weight exceeds the maximum allowable landing weight, a Jettison system would be required |
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What are some other names for a single point fueling system? |
An under wing or pressure fueling system |
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Why do multi engine airplanes have fuel cross-feed systems? |
To allow any engine to draw fuel from any tank |
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The fuel selector valve for a multi-engine aircraft must have at least three positions. What are they? |
On, off, and crossfeed |
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Why do some fuel tanks have internal baffles? |
To resist fuel surging or sloshing caused by changes in the attitude of the aircraft |
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What are the two types of fuel cells? |
Integral or wet wing fuel cells, and bladder type fuel cells |
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What does the term wet wing mean? |
It means that sealed portions of the aircraft wing structure form the fuel tanks |
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How is the weight of the fuel supported when bladder type fuel cells are used? |
The bladder is supported by the aircraft structure which contains it |
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Why do turbine engine aircraft have fuel temperature indicating systems? |
To allow the crew to determine if the fuel is cold enough to produce a danger of the formation of ice crystals |
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Name four types of fuel quantity gauging systems currently in use |
Sight gauges, mechanical, electric, and electronic gauges |
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Why are the electronic fuel quantity indicating systems more accurate than other types? |
They measure the mass of fuel used instead of the volume |
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What are drip gauges and sight gauges |
Underwing, bayonet type fuel gauges |
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What is the purpose of an in-transit light associated with an electrically operated fuel tank shut off valve? |
To provide an indication that the valve is in motion between one position and another |
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For what reason is a fuel jettison system usually divided into two separate, independent systems, one for each wing? |
To help maintain lateral stability by Jettisoning fuel from a heavy wing if necessary |
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What procedures should be followed regarding gaskets and seals when replacing fuel system components? |
All old gaskets and seals should be replaced with new ones |
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Is it possible for a fuel system to develop a leak that has no visible evidence such as a stain or spot, and if so, how? |
An internal components such as a valve can develop a leak |
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How is a fuel tank checked for leaks following a patch or welded repair? |
The tank is slightly pressurized with air and then the repaired area is leak checked with soap and water solution |
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Name some advantages of a single point fueling system |
It reduces fueling time, reduces chances for contamination and fire, and eliminates damage to the aircraft skin |
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Why should you wait for a period of time after fueling an aircraft before checking the fuel sumps? |
To allow time for water and contaminants to settle to the drain point |
