Cessna 1980 182Q Pilot's Operating Handbook And Flight Manual page 148

SECTION 7
CESSNA
MODEL 182Q AIRPLANE
&
SYSTEMS DESCRIPTIONS
cylinder head temperature and oil temperature gages for operation .. If
these gages are not indicating, an electrical malfunction has occurred.
The fuel selector valve should be in the BOTH position for takeoff,
climb. descent, landing, and maneuvers that involve prolonged slips or
skids. Operation from either LEFT or RIGHT tank is reserved for level
cruising flight only.
NOTE
Unusable fuel is at a minimum due to the design of the fuel
system. However, with 1/4 tank or less, prolonged uncoor-
dinated flight such as slips or skids can uncover the fuel
tank outlets, causing fuel starvation and engine stoppage.
Therefore, with low fuel reserves, do not allow the airplane
to remain in uncoordinated flight for periods in excess of
one minute.
NOTE
When the fuel selector valve handle is in the BOTH
position in cruising flight. unequal fuel flow from each
tank may occur if the wings are not maintained exactly
level. Resulting wing heaviness can be alleviated gradu-
ally by turning the selector valve handle to the tank in the
"heavy" wing.
NOTE
It is not practical to measure the time required to consume
all of the fuel in one tank, and, after switching to the
opposite tank, expect an equal duration from the remain-
ing fuel. The airspace in both fuel tanks is interconnected
by a vent line and, therefore, some sloshing of fuel between
tanks can be expected when the tanks are nearly full and
the wings are not level.
If
a fuel tank quantity is completely exhausted in flight. it is recom-
mended that the fuel selector valve be switched back to the BOTH position
for the remainder of the flight. This will allow some fuel from the fuller
tank to transfer back through the selector valve to the empty tank while in
coordinated flight which in turn will assure optimum fuel feed during
slipping or skidding flight.
The fuel system is equipped with drain valves to provide a means for
the examination of fuel in the system for contamination and grade. The
system should be examined before the first flight of every day and after
7-24
1 October 1979