Day 11 - Fuel System Flashcards
The fuel system is designed to operate between __ and __ feet
Sea level, 41,000 feet
The fuel system is designed to operate within what temperature range
-40 C to 50 C
T/F - Do not reset a popped fuel system circuit breaker
TRUE
Describe the fuel flow sequence throughout the fuel tanks
Aft cabin => aft fuselage => right mid => left mid => wing tanks
The capacity of the fuel feed chamber is
20 gallons
Name the four types of pumps in the fuel system
Electric boost, electric transfer, jet, and engine driven pumps
State the four purposes of the boost pumps
Engine start, backup for primary jet pumps, source of pressure for transfer pumps, crossfeed
In the automatic mode, the boost pump will operate when
Fuel feed line pressure drops below 5 psi, fuel feed chamber falls below 11 gallons, engine starting is selected, crossfeed is selected
Where are the electric transfer pumps located and what do they do
In each mid tank, transfer fuel to wing tanks
How is fuel transferred through the jet pumps
Motive flow
What is the total capacity of the fuel system if pressure refueled
771 gallons/5166 pounds
What is the total capacity of the fuel system if gravity refueled
739 gallons/4951 pounds
What do the sniffle valves vent
Both fuel and air
What do the float check valves vent
Air
What is the purpose of the pressure relief valves
Provide overpressure protection during single point refueling
Sniffle valves pull air inward if an internal vacuum greater than __ to __ psi occurs
0.1, 0.3
Sniffle valves dumps fuel overboard at pressure greater than __ psi
5
What is the purpose of the flapper valves
To allow fuel to flow in one direction
Name the two methods of refueling the T-1
Gravity and single point pressure refueling
How is gravity refueling accomplished
Through three filler ports located in each wing and aft fuselage
T/F - Crossfeed supplies fuel to a single engine from both wing tanks simultaneously
FALSE
If the fuel indicators fail, they will display
Below zero
T/F - In the event of an EFC failure, engine spool up time will be decreased
FALSE
T/F - Crossfeed must not be used for final approach or landing
TRUE
The F FLTR BYPASS annunciator means
Unfiltered fuel is being supplied to the engine
When does the FUEL PRESS LO annunciator illuminate
Fuel pressure below 5 +/- 0.5 psi
When does the FUEL FEED annunciator illuminate
Fuel feed chamber less than 70 lbs/11 gallons
When does the FUEL LEVEL LO annunciator illuminate
Wing tank has 200 lbs (32 gallons) or less
When does the WG TK OV PRESS annunciator illuminate
Wing tank pressure in excress of 3.5 +/- 0.5 psi
When does the F XFR PRESS LO annunciator illuminate
Fuel transfer line pressure below 5 +/- 0.5 psi
