Textron Aviation Cessna 172S NAV III Skyhawk SP, Information Manual

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SECTION 4 CESSNA
NORMAL PROCEDURES MODEL 172S NAV III
KAP 140 AUTOPILOT
U.S.
PREFLIGHT INSPECTION
(Continued)

NOSE
1. Fuel Strainer Quick Drain Valve (located on bottom of fuselage) -
DRAIN
Drain at least a cupful of fuel (using sampler cup) from valve to
check for water, sediment, and proper fuel grade before each
flight and after each refueling. If water is observed, take further
samples until clear and then gently rock wings and lower tail to
the ground to move any additional contaminants to the sampling
points. Take repeated samples from all fuel drain points,
including the fuel reservoir and fuel selector, until all
contamination has been removed. If contaminants are still
present, refer to WARNING below and do not fly the airplane.
NOTE
Collect all sampled fuel in a safe container. Dispose of the
sampled fuel so that it does not cause a nuisance, hazard,
or damage to the environment.
WARNING
IF, AFTER REPEATED SAMPLING, EVIDENCE OF
CONTAMINATION STILL EXISTS, THE AIRPLANE
SHOULD NOT BE FLOWN. TANKS SHOULD BE
DRAINED AND SYSTEM PURGED BY QUALIFIED
MAINTENANCE PERSONNEL. ALL EVIDENCE OF
CONTAMINATION MUST BE REMOVED BEFORE
FURTHER FLIGHT.
2. Engine Oil Dipstick/Filler Cap:
a. Oil level - CHECK
b. Dipstick/Filler Cap - SECURE
NOTE
Do not operate with less than 5 quarts. Fill to 8 quarts for
extended flight.
3. Engine Cooling Air Inlets - CHECK (clear of obstructions)
4. Propeller and Spinner - CHECK (for nicks and security)
5. Air Filter - CHECK (for restrictions by dust or other foreign
matter)
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172SPHAUS-05
4-8
For
Training
Purposes
Only