FAA O&P- J.K.

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

Is there any reason why a fuel jettison system might be required on a small aircraft

yes, if the max takeoff weight exceeds allowable landing weight, a jettison system would be required

What are some other names for a single point fuelling system

underwing or pressure fueling system

Why do multi-engine airplanes have fuel crossfeed systems

to allow any engine to draw fuel from any tank

The fuel selector valve for a multi-engine aircraft must have at least three positions. What are they

ON, OFF, and Crossfeed

Why do some fuel tanks have internal baffles

to resist fuel surging or sloshing caused by changes in the attitude of the aircraft

What are the two types of fuel cells

Integral/wet wing and bladder type fuel cells

What does the term “ Wet Wing” mean

the fuel tank is a part of the aircraft’s structure

How is the weight of the fuel supported when bladder-type fuel cells are used

by the aircraft structure

Why do turbine-engine aircraft have fuel temperature indicating systems

to allow the crew to determine if the fuel is cold enough to cause ice crystals to form

Name four types of fuel quantity gauging systems currently in use

sight gauges, mechanical, electronic, and electronic gauges

What are electronic fuel quantities indicating systems more accurate than other types

they measure mass of fuel instead of volume

What are drip gauges and sight gauges

Underwing, bayonet-type fuel gauges

What is the purpose of an in transit light associated with an electronically operated fuel tank Shutoff valve

to provide an indication that the valve is in motion between one position and another

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 needed

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

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 component such as a valve could develop a leak

How is a fuel tank checked for leaks following a patch or welded repair

the tank is slightly pressurized with air and the repaired area is leak checked with soap and water solution

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

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