B206L3 Fuel System

Question 1

Fuel cells

Answer 1

3 interconnected bladder (crashworthy) fuel cells. 2 front and 1 aft cell. Dual element ejector pump connects the cells.

Question 2

Dual element ejector pump

Answer 2

Located between forward fuel cells. Transfers fuel from forward cells aft when boost pumps are operating.

Question 3

Interconnect tube

Answer 3

Permits flow between forward cells, and in case of boost pump failure, allows for gravity transfer to aft cell.

Question 4

Fuel Quantity Probes

Answer 4

1 forward cell and 2 aft cell probes sending signal to fuel gage. Can view FWD only fuel using switch in cockpit.

Question 5

In-line fuel filters

Answer 5

Protects the ejector pump from debris

Question 6

In-line check valves

Answer 6

Prevents air from entering fuel system after boost pump failure when fuel level drops below ejector standpipe.

Question 7

Airframe Fuel Filter

Answer 7

Bypass valve triggers warning light on instrument panel. Push to test button on top. Drain valve.

Question 8

Low fuel warning switch

Answer 8

Located on fuel boost pump assembly and electrically connected to caution panel. Light illuminates when 50-75 lbs fuel remaining in aft cell.

Question 9

Fuel Shutoff Valve

Answer 9

Located above aft fuel tank (not easily accessible) and is electrically operated.