FUEL

Question 1

What does the Nitrogen Inerting Unit (NIU) do?

Answer 1

provides oxygen-depleted air to the internal cells to reduce the fire hazards associated with fuel cell ullage (air space)

Question 2

What is the forward and aft fuel cell storage capacity?

Answer 2

Forward: 156 Gallons/ 1045.2 lbs
Aft: 220 gallons/ 1476 lbs

Question 3

What is the Robby tank and external aux tank capacity?

Answer 3

Robby tank: 100/130 gallons, 670/871 lbs

Aux tank: 230 gallons/ 1,541 lbs

Question 4

The fuel cells are self-ceiling up to what caliber round?

Answer 4

12.5mm/ 50 caliber and on the bottom up to a 14.5mm

Question 5

Fuel cells full of fuel can survive a ____ fall on to concrete without bursting

Answer 5

65 ft

Question 6

When does the low fuel caution come on?

Answer 6

Forward cell less than 240 lbs

Aft cell less than 260 lbs

Question 7

Where is the fuel boost pump located and is it electrical or IPAS powered?

Answer 7

Aft fuel cell and it is IPAS driven

Question 8

What is the maximum pressure for refueling?

Answer 8

55 psi

Question 9

Before opening either gravity refuel filler port cap, place the REFUEL VALVE switch in the _______ position to vent pressure from the internal fuel cells. This will prevent fuel from being expelled out the port when the cap is opened.

Answer 9

OPEN

Question 10

Aft Fuel Low

Answer 10

Land as soon as practicable

Question 11

Forward fuel low

Answer 11

Land as soon as practicable

Question 12

XFEED 1 or 2 valve fail

Answer 12

Achieve safe single engine airspeed.
If CAUTION message extinguishes,
continue mission. If CAUTION
message remains, be prepared for a
single engine flame-out. LAND AS
SOON AS PRACTICABLE.

Question 13

Both engine 1 and 2 fuel PSI low

Answer 13

Fuel page boost button- press on

LAND AS SOON AS POSSIBLE

Question 14

What is a cross feed valve and what does it do?

Answer 14

They allow both engines to draw fuel from either internal fuel cell. It also provides a positive fuel shutoff during maintenance and emergencies. Crossfeed SOVs are three-way, four-position ball valves that are controlled by the SP.

Question 15

In external AUX tanks what supplies the transfer method?

Answer 15

IPAS

Question 16

When conducting a hot refuel what must be complete prior to take-off?

Answer 16

A Bubble burn (see check list)

Question 17

What is the purpose of the cross feed valves?

Answer 17

It allows the engines to draw fuel from either fuel cell and provides a positive shut off during emergencies

Question 18

The cross feed SOV is a 3 way, 4 position valve. What are the 4 positions?

Answer 18

Normal
cross feed aft
cross feed forward
closed (emergency only)

Question 19

What is the purpose of the break away valve?

Answer 19

The breakaway valve reduces fire hazards by sealing fuel cells and lines in the event of a high-impact landing.

Question 20

During start up and during emergencies requiring the boost pump to be on, what will the cross feed valves do?

Answer 20

The SP will command the cross feed to draw fuel from the aft cell.

Question 21

What is the warning associated with the cross feed valves?

Answer 21

WARNING: cross feed shall be set to normal at all times while in flight. unless executing emergency procedures for engine 1 Fuel PSI low and engine 2 PSI . A malfunctioning cross feed valve could result in a single engine flame out

Question 22

If you are fighting in an aircraft with a robby tank and the forward or aft level low caution displays but your EUFD says you 1100 lbs onboard what is wrong?

Answer 22

You have not transferred fuel from the Center aux tank to the main fuel cells.

Question 23

The INU uses IPAS to purge about _____% of the oxygen in the fuel cells.

Answer 23

70%

Question 24

The INU requires ______ and ________ to operate?

Answer 24

IPAS, 115 volts AC