Fuel & Hydraulic System Flashcards
Right and Left Tank capacities
650 - 22,100 lbs / 3279 Gal
ER - 24,100 lbs / 3597 Gal
Total Fuel Tank capacity
650 - 44,200 lbs / 6558 Gal
ER - 48,200 lbs / 7152 Gal
All Operable boost pumps shall be ____ for _____ unless fuel balancing is in progress
ON, all phases of flight
Fuel Low Level Alert occurs at
650lbs / 96 gallons
Maximum Fuel Tank Temp
+54°C
Minimum Fuel Tank Temp (amber)
-34.5°C to -36°C
Min Fuel Tank Temp (Red)
-37°C
When fuel tank temp is at or below ____°C in flight with less than _____lb total fuel remaining, the a/c shall be descended to an altitude where SAT is ___°C or warmer and maintain a min speed of ____ Mach.
-30°C, 5000 lbs, -60°C, 0.80M
Maximum Hydraulic and Reservoir Quantities
Left System: 4.55 Gal / Reservoir shows full at 3.0 Gal
Right System: 2.77 Gal / Reservoir shows full at 1.5 Gal
L/R Hyd Sys Accumulator Pre-Charge
1200 psi at 70° F / 21° C ±25 psi per each ∆ 10°F/5°C
Min Engine Fuel Temp
-40°C
Max Engine Fuel Temp
+140°C
Maximum Transient Engine Fuel Temp
+165°C
When does the auto heated fuel return system activate and deactivate?
Activates when hopper fuel temp is ≤0°C, shuts off when it’s >10°C.
PTU, if armed, activates when
L system pressure drops below 2400 PSI, AND
R sys pressure is >2850 PSI and temp is <107°C and
L sys quantity is > 0.36 gallons.
What triggers the Aux Pump?(assume it’s armed)
Disagreement between flap position and handle or gear position and handle
If Aux pump selected ON or automatically comes on in flight, how long will it remain on?
2 Minutes
Will Aux Pump retract the landing gear?
Yes, but very slowly, it maybe more than to 2 minutes.
With gravity feed only, Above what altitude will the engine no longer be able to operate in a steady state?
> 20,000 ft.
