Fuel (28) Flashcards
How many fuel tanks are there?
2
At what level is the interconnection between the 2 tanks?
160kg
What draws fuel intro the engines?
The engine driven fuel pumps
How are the fuel ventilation systems protected from flame propagation?
Via flame arrestors
How many probes are in each fuel system and where does it send data?
2
AMMC
Is there an independent low level sensor?
YES
optical sensor switch
What is the fuel capacity?
888Kg
(useable)
How much unusable fuel is there
8kg
At what level is the interconnect or and what is its purpose?
160kg total
To concentrate the fuel around the inlet
How much of the suction feed screen can be blocked when operating at Max Op Alt?
50%
How are the Fuel ShutOff valves controlled?
(2)
EDCU
When Fire suppression ARMED
What is the purpose of the fuel Snorkel?
Minimised fuel spillage in the event of an aircraft rollover
How long and what temp can the flame arrest or protect the fuel tank for?
800°C for 5 mins
When is [1(2) FUEL LOW] triggered?
51kg
(10 mins)
What does [PMS NOT OFF] signify on the EDCU Fuel page?
Pilot tries to close the SOV with the engine Power Management Switch (PMS) for the relevant engine in the FLIGHT or IDLE position?
What does [ENG 1(2) FIRE ARM] posted in the EDCU Fuel page signify?
Fire system ARMED
What does [SOV DISCREPANCY] signify in the EDCU Fuel Page?
When the reported position of the valve does not match the commanded position of the valve
What does [CMD NOT EXECUTED] power in the fuel management page signify?
The AMMC does not acknowledge the EDCU command to open or close a SOV
What 3 conditions are needed for operation of a sample/drain valve?
- ENgine SOV closed
- WOW
- Sample valve switch operation
On power-up what position are the SOVs in?
The last known position
What happens to the fuel quantity display on the PFD when both tanks are below 51kg?
Display changes to amber
What does three amber dashes signify on the Fuel Quantity indicator on the PFD?
Loss of probe data.
Under OEI, how is the fuel in the failed engine displayed?
Greyed out 160kg
Are there any airframe mounted fuel filters?
No - The one at the suction valve is only a screen
The fuel is filtered at the engine only
Can you identify a failed fuel probe?
Yes - via Fuel Synopitc Page
How is the aircraft refuelled?
Gravity
LHS of Aircraft
When at 160kg (collector cell level), how much flight time is available?
50 minutes AEO
35 minutes OEI
In level flight and when the fuel quantity equals the unusable fuel quantity, what will the fuel quantity read?
000
What kind of sensor is the Low Level Sensor?
Optic Based
Where is the Fuel Control Unit located?
On the Reduction Gearbox
