MD Helicopters MD900 Explorer, Flight Manual

Page: 444 / 564

Optional Equipment
Supplemental Fuel System
CSP − 902RFM207E − 1
ROTORCRAFT FLIGHT MANUAL
MD900 (902 Configuration with PW 207E)
FAA Approved
Reissue 2
Original
10 − 26
PART IV
NORMAL PROCEDURES
Preflight checks:
Fuel cap
SECURED
Prestart cockpit check:
Fuel transfer switch
OFF
Inflight operation:
Fuel transfer switch
ON; VERIFY FUEL TRANSFER LIGHT
‘‘ON’’
NOTE
:
Fuel transfer should be begun when the fuel level in the main tank is between
700 and 300 LBS.
Main fuel tank quantity begins to
increase and auxiliary fuel quantity
begins to decrease.
CHECK
NOTE
:
Fuel Transfer:
Fuel transfer time is approximately 20 minutes (22 minutes if second check valve
installed) with a full auxiliary fuel tank while in normal cruise.
Transferring fuel to the main tank may be accomplished once main tank
indicated fuel quantity is at or less than approximately 500 LB in normal ground
attitude or approximately 700 LB in normal cruise attitude.
Fuel transfer rate is approximately 600 LB/HR (540 LB/HR with second check
valve) in normal cruise and approximately 400 LB/HR in normal ground attitude.
Starting Fuel Transfer below 300 LBS:
With engines at MCP, the auxiliary fuel transfer rate may not keep
up with the engine fuel consumption rate.
Starting fuel transfer below 300 LBS following a boost pump failure
(boost pumps OFF, Ref. Section III) may result in early right engine
fuel starvation (fuel transfers from the auxiliary fuel tank into the
left side of the main fuel tank).
Fuel transfer switch
OFF WHEN TRANSFER IS COMPLETE
NOTE
:
The auxiliary fuel quantity gauge has been found to be inaccurate (indicates
high) during hover operations.
Engine/aircraft shutdown
Fuel transfer switch
OFF; VERIFY FUEL TRANSFER LIGHT
‘‘OFF’’
CAUTION