Selkirk College IATPL Program Manual
Beech 95 POH Effective September 1, 2005 Appendix 14 - 62
Fuel System
The Travelair fuel system consists of a separate identical fuel supply system for each
engine. Each wing contains one Main tank and one Auxiliary tank (Aux.) GSAK is also
equipped with one nacelle tank in each wing but these are not serviceable and will not be
discussed here other than to say that the selectors for the nacelle tanks must be left in the
off position to prevent any contamination in the nacelle tanks from entering the Main
tanks.
The fuel tanks are lined with a rubberized fuel cell. These cells are quite sturdy under
normal service conditions but care must be taken to avoid puncturing the cell. Do not use
a dipstick to check fuel quantity; instead perform a visual check and crosscheck with the
fuel gauges and fueling records to determine the amount of fuel onboard. The Main tanks
are particularly easy to check visually. The auxiliary tanks slope, due to the wings
dihedral, so that no fuel is visible at the filler neck when the tank’s quantity drops below
¾ full.
Each fuel tank is filled through its own filler neck. The fuel caps have O-rings to prevent
water from entering the tanks. All fillers must be checked to confirm they are securely
closed before flight.
The Main fuel tanks hold 25 US-gallons with 22 gallons useable. The Main tanks must be
used for all takeoffs and landings. Main tanks should normally also be selected when
performing special flight maneuvers such as stalls.
The Auxiliary tanks hold 31 US-gallons with all 31 useable. The auxiliary tanks may be
used in normal climbs, cruise and descents. Auxiliary tanks should not be used when
performing steep turn, slips, stalls, or other unusual maneuvers unless they are at least ¾
full.
Fuel quantity is measured by a float type transmitter unit in each tank that sends a signal
to fuel gauges on the Power gauge panel (see below.) There are two fuel gauges,
controlled by a two-position switch on the Pilot sub-panel (see below.) The switch can be
set to Main or Aux and displays the quantity of the two main tanks or the two auxiliary
tanks respectively.
Each engine has an engine-driven fuel pump driven by the engine accessory box. The
engine-driven fuel pump supplies sufficient fuel to the engine for full power operation.
An electric boost pump for each engine supplies fuel pressure for starting and provides
for near maximum engine performance should the engine driven pump fail. The electric
boost pumps are used to prime the engine for starting and in emergencies, and should be
used for takeoff and landing. In extremely hot weather they should be employed for all
ground operations, takeoff, climb, and landing.
The electric boost pumps are located in the fuel lines between the fuel cells and the
engine such that fuel may be drawn from any tank using the boost pumps.
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