Fuel Flashcards
What is the normal fuel loading sequence
- Wing tank outer cells filled to capacity
- Then the inner cells are
- Total wing tank capacity is 27,500 lbs
- Center tanks filled once wing tanks are filled
(The center tanks are not normally filled until wing tanks are filled)
Max fuel imbalance between the wing inner cells
3,300 lbs.
What are the number and location of the aircraft fuel pumps?
- 6 electrically powered fuel pumps
- 2 on EACH wing tank inner cells
- 2 in center tank
With fuel in the center tank, what is the normal(automatic) fuel feed priority?
With flaps fully retracted: center tank is consumed first followed by the wing tanks
1. ONLY wing tank pumps are equipped with
Pressure transducers
2. Pressure reducers allow center tank
Pump pressure to preferentially supply
The respective engine
With flaps extended: center tank pumps auto shutoff per auto logic, allowing wing tank fuel to be consumed
What is the aircrafts fuel configuration?
- One tank in each wing section, divided into inner and outer cells
- A center tank located in the center section of the fuselage.
- Surge tanks are located outboard each outer cell and are not depicted on the display
When will the transfer valves automatically open, allowing outer cell fuel to gravity to the respective inner cell.
Both transfer valves auto open when EITHER wing tank inner cell fuel level reaches approximately 1,650 lbs.
When will the F. USED indications reset to zero?
Pic
Automatically during engine start
What’s the function of the L & R TK PUMPS pbs?
Pic
TK PUMPS pbs are used to manually control their respective Wing Tank pumps:
- ON (lights out) - pump runs continuously until pb is selected OFF
- OFF (white) - pump is deactivated and remains off until pb is selected
- LO (Amber) - pump is on but pump pressure is low
Are the wing tank fuel pumps equipped with automatic logic?
No, they are not. Pump operation is commanded by its respective pbs and must always be manually controlled.
What’s the function of the MODE SEL pb?
Pic
- AUTO (light out) - provided CTR TK PUMP pbs are selected ON (lights out), the center tank pumps will be automatically activated and deactivated as required by automated logic
- MAN (white) - automatic pump activation/deactivation logic is off. Center tank pumps must be manually controlled.
What are the ECAM indications when Center Tank fuel is being consumed?
(Pic)
- CTR TK FEEDG appears on the E/WD memo section
- On the ECAM FUEL page, the center tank pump indications will be inline green
- When the center pumps are commanded off, per computer logic, pump indications will be horizontal green lines.
Where is the location of valve indications on the ECAM FUEL page?
(Pic)
- Crossfeed valve - appears directly above the CTR text
- APU fuel valve - appears under the white APU
- Engine Low Pressure - fuel valves appear directly below the respective engines fuel used quantity number
Where is the location of fuel temperature indications on the ECAM FUEL page?
(Pic)
Outer and inner compartment fuel temperatures are displayed directly below the respective compartment on the ECAM FUEL page.
1. Fuel temperatures are not provided for
The center tank
What are the controls and indications of the fuel Crossfeed Valve?
(Pic)
- The fuel Crossfeed Valve is controlled with the X-FEED pb:
A. Closed (light out) - valve is
Closed
B. ON (white) - valve has been commanded
Open
C. OPEN (green) - valve is in the open
Position - When the Crossfeed is open:
A. FUEL X FEED (green) - appears on
E/WD memo section
B. On ECAM FUEL page, the Crossfeed
Valve appears as a horizontal in line
(Green) - While in transition the valve indication appears as an amber circle with a diagonal line.
What are the indications of a degraded Fuel Quantity Indications (FQI) System?
(Pic)
Amber hash marks cover the last two digits of fuel quantity displays of the:
A. FOB indication on the E/WD
AND
B. The individual fuel tank quantities on the
ECAM FUEL page.
