SOLOY TURBINE PAC
SECTION 7
POHS CESSNA U/TU 206G
AIRPLANE & SYSTEMS
DESCRIPTION
7-22
F.A.A. Approved
October 4, 2005
FUEL SYSTEM
The fuel system, see Figure 7-6, consists of left and right vented fuel
tanks, two fuel reservoir tanks, a fuel selector valve, engine fuel filter,
fuel system quantity and flow instrumentation.
CAUTION
UNUSABLE FUEL IS AT A MINIMUM DUE
TO THE DESIGN OF THE FUEL SYSTEM.
HOWEVER, ¼ FUEL QUANTITY OR LESS,
PROLONGED UNCOORDINATED FLIGHT
SUCH AS SLIPS OR SKIDS CAN
UNCOVER THE FUEL TANK OUTLETS,
CAUSING FUEL STARVATION AND
ENGINE STOPPAGE.
FUEL TANKS
The fuel storage system consists of the fuel tanks and vent
system. Fuel flows by gravity from the two wing tanks to two
reservoir tanks, and from the reservoir tanks to a selector valve
labeled RIGHT, BOTH, LEFT and OFF. A safety spring prevents
inadvertent selection to OFF by acting as a stop once the valve is
moved from the OFF position to LEFT. To shutoff the fuel, the
safety spring must be pressed down to allow selector movement
to OFF.
Fuel system venting is essential to system operation. Complete
blockage of the venting system will result in decreasing fuel flow
and eventual engine stoppage. Venting is accomplished by check
valve equipped interconnected flush inlet vents. There are two
primary ram-type vents and two drains on the interconnected vent
line. The fuel filler caps are equipped with vacuum operated
vents which open, allowing air into the tanks should the fuel tank
vent lines become blocked.
FUEL INDICATING SYSTEM
Fuel quantity is measured by two float-type fuel quantity
transmitters (one in each tank) and indicated by two electrically-
operated fuel quantity indicators on the right side of the
instrument panel. A yellow arc indicates when the fuel quantity is
1/8
th
tank or less with a red line and the letter “E” to indicate when
the fuel tank is empty. The indicators cannot be relied upon for
UNCONTROLLED
COPY