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LJ35 Flash Cards
Fuel System
16
Other
Professional
06/25/2007

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Cards

Term
What is the total fuel capacity?
Definition
- 6,238lbs with one recognition light
- 6,198lbs with two recognition lights
Term
How many fuel jet pumps are there and where are they located?
Definition
4 - one in each tip tank and one in each wing
Term
If and engine is shutdown during flight can you use all the tip tank fuel assuming that the respective tank was full at shutdown?
Definition
No. approximately 600lbs, or half, will not be usable
Term
If a jet pump failed during flight would there be sufficient fuel supply to the engine without using the standby pump?
Definition
Theoretically, the engines will suction feed at 25,000' and below
Term
What occurs when the XFER-FILL switch is moved to FILL?
Definition
1. Transfer valve opens
2. Crossflow valve opens
3. Standby pumps are energized
4. Transfer pump is disabled
Term
What occurs when the XFER-FILL switch is in FILL and the fuselage tank becomes full?
Definition
1. Transfer valve closes
2. Crossflow valve closes
3. Standby pumps are deenergized
4. Green full light illuminates
Term
What occurs when the XFER-FILL switch is moved to XFER?
Definition
1.Transfer valve opens
2. Crossflow valve opens
3. Standby pumps are deenergized
4. Transfer pump is energized
Term
When selecting transfer with the fuselage tank full, what does the white light on the fuel panel indicate?
Definition
Insufficient pressure (2.75psi) in the line, possibly failure of the transfer pump, faulty pressure switch (xfer line) or even a faulty wing fuel pressure switch.
Term
What do the jet pump switches control?
Definition
Motive flow valves
Term
When does the low fuel light illuminate?
Definition
When either wing or float switches reach 400-500 lbs.
Term
What does a fuel filter light indicate?
Definition
Light illuminates at 1.25 delta, one or both the airframe fuel filters are bypassed at 2.25 delta. Light is actually impending a bypass situation
Term
What fuel tanks are vented directly by the fuel vent system?
Definition
The fuselage and the tip tanks
Term
What are the limitations with regard to the utilization of 100LL?
Definition
1. Maximum 500 gallons per 100 hours of operation per engine.
2. Minimum fuel temperature of -54 degrees C.
3. Both jet pumps must be on and operating
4. Flight is limited to 15,000'
Term
What differential is allowed between tanks while fueling?
Definition
Maximum 125 gallons
Term
What are the requirements for using anti-icing fuel additive?
Definition
20 fluid ounces per 105-206 gallons, MIL-I-27686 (Hi-Flo Prist 20, Quell 20, D-Ice 20) also a biocide

20 fluid ounces per 105-155 gallons, MIL-I-85470 (Hi Flash Prist, D-Ice Flash 190) not a biocide
Term
Wing and Wingtip fuel capacity?
Definition
4898 lbs total:

>L tip tank = 1215
>R tip tank = 1175
>L and R main wing tanks each 1245 lbs
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