MD Helicopters MD900 with PW206E, Flight Manual

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Optional Equipment
Supplemental Fuel System
CSP–900RFM206E–1
ROTORCRAFT FLIGHT MANUAL
MD900 With PW 206E
FAA Approved
Original
10–31
PART VII
SYSTEM DESCRIPTION
The MD900 supplemental fuel system option adds a transfer type auxiliary fuel
tank with a usable capacity of approximately 29.4 US gallons (200 LB, Jet−A) under>
neath
the baggage compartment floor. The tank is filled through a gravity fill port
on the right side of the aircraft. Transfer into the main tank is performed using
a fuel transfer pump mounted in the auxiliary fuel tank. Overfilling the main tank
is prevented by use of a float−type level control valve mounted in the main tank.
This level control valve prevents transfer into the main tank until the fuel remaining
in the main tank is less than approximately 500 LB in normal ground attitude
or approximately 700 LB in normal cruise attitude. The level control valve will
shut off transfer into the main tank if the fuel in the main tank increases to approxi>
mately 755 LB in normal ground attitude or approximately 832 LB in normal cruise
attitude. The auxiliary tank vent is teed into
the existing main tank aft vent tubing.
The installation includes a cockpit mounted fuel quantity gauge (AUX FUEL) for
the auxiliary tank, a fuel transfer pump switch, and a fuel transfer indicator light.
Electrical power is supplied from the battery bus through the ‘‘AUX FUEL’’ 5 AMP
circuit breaker. A separate 1 AMP ‘‘AUX FUEL XMIT’’ circuit breaker provides
power for fuel quantity indicating. These circuit breakers are located on the baggage
compartment circuit breaker panel under ‘‘BATTERY BUS’’.