AW139 PTS - Fuel

Question 1

Describe the fuel system

Answer 1

2 main fuel tanks - linked when fuel above 1000 lbs.
2x booster pumps in each sump
2x fuel drains
1 aux tank
4x fuel probes (2x upper, 2x lower)
Low level sensors (202 lbs each side)

Question 2

With the Aux tank installed, what is the max fuel capacity?

lbs

Answer 2

3698 lbs

FCOM 3600

Question 3

How many fuel drains are there?

Answer 3

2 x fuel drains

2 x water drains

Question 4

How many fuel pumps are associated with the fuel system?

Answer 4

2 x booster pumps
2 x HP pumps (engine)
2 x LP pumps (engine)

Question 5

How does the pilot interact with the fuel?

Answer 5

Via the Fuel Control Panel
(FCP)
Boost pumps, x-feed, and fuel SOVs

Question 6

How does the pilot pre-flight the fuel system?

Answer 6

Test sump from each side

Checks fuel test complete via Test panel

Question 7

What is the purpose of the cross feed in auto mode?

Answer 7

Allows cross feed to open if Low Px detected

Question 8

How many fuel probes are fitted?

Answer 8

4

2 upper and 2 lower

Question 9

How is the fuel quantity displayed in the cockpit?

Answer 9

The rough FCU and indicated as weight (lbs) - using density calc.

Question 10

How much fuel is in the tank when it reached then interconnecting flange?

Answer 10

1004 lbs

Question 11

Can you transfer fuel when the level is below the interconnecting flange?

Answer 11

No

level is below flange

Question 12

When does the low level CAS illuminate?

Answer 12

202 lbs

sensors installed on lower probes

Question 13

Does the Low Fuel CAS come on if the computer fails?

Answer 13

Yes

The Low Level sensors are independent

Question 14

Can we jettison fuel?

Answer 14

NO

Question 15

What are the approved fuel grades?

Answer 15

JET A/JET A-1
JP5
JP8, JP8+100
SEE RFM…

Question 16

Can we use an emergency fuel substitute?

Answer 16

Cant find it… so NO

Question 17

Do we need additives for hot or cold temperatures?

Answer 17

NO

Question 18

Where can you find oil grade, capacity and quantities?

Answer 18

RFM Section 1 - Limitations

Capacity in Section 8

Question 19

Can you mix oil if more than one type is approved?

Answer 19

NO

Question 20

Where is the engine oil indicator displayed?

Answer 20

Only T & P on CAS