ENSTROM 280FX OPERATOR’S MANUAL 10-11-3
FAA Approved: Mar 26/12 Rev. 6
Report No. 28-AC-020 Feb 21/12
SUPPLEMENT 11
AUXILIARY FUEL TANK
SECTION I. GENERAL
10-11-1. Introduction
This supplement must be attached to the Basic Rotorcraft
Flight Manual when the aircraft is equipped with an Enstrom
Auxiliary Fuel Tank Kit No. 28-01009. Operation must be in
compliance with the Basic Rotorcraft Flight Manual except as
modified by this supplement. Other approved sections and
supplements to this Flight Manual are recommended
procedures.
10-11-2. Description
The auxiliary fuel tank is a 13-gallon tank with 12.7 gallons
of usable fuel and 0.3 gallons of unusable fuel. It consists of
a foam-filled, neoprene bladder inside an aluminum case. It
is installed in the baggage box with a line running to the
main fuel tanks. The auxiliary fuel tank is equipped with a
12-volt or 28-volt electric pump which is used to transfer the
fuel from the auxiliary tank to the main tanks. The auxiliary
fuel tank is designed to be quickly installed and removed.
Fuel transfer is controlled by a switch on the instrument
panel. Turning the switch on transfers the fuel from the
auxiliary tank to the main tanks. An indicator light near the
fuel transfer switch will illuminate when all of the fuel in the
auxiliary fuel tank has been transferred to the main tanks.
The fuel must be in the main tanks to supply the engine.
This system is not designed to run the engine directly from
the auxiliary fuel tank. The fuel transfer rate is
approximately 25 gallons per hour, and takes approximately
one-half hour to complete.
Because certain passenger load/fuel load combinations may
move the center of gravity outside of the approved envelope,
provisions have been included for storage of the ground
handling wheels in a forward internal location. In addition to
allowing a greater variety of loading, the internal storage of
the ground handling wheels should
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