Textron Cessna C172S PIM, Pilot Operating Handbook

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CESSNA SECTION 4
MODEL 172S NAV III NORMAL PROCEDURES
GFC 700 AFCS
U.S.
PREFLIGHT INSPECTION
(Continued)
4
RIGHT WING
1. Landing/Taxi Light(s) - CHECK (condition and cleanliness of
cover) (If installed)
2. Wing Tiedown - DISCONNECT
3. Main Wheel Tire - CHECK (proper inflation and general
condition (weather checks, tread depth and wear, etc.))
4. Fuel Tank Sump Quick Drain Valves - DRAIN
Drain at least a cupful of fuel (using sampler cup) from each
sump location 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 until all contamination has been
removed. If contaminants are still present, refer to WARNING
below and do not fly 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.
5. Fuel Quantity - CHECK VISUALLY (for desired level)
6. Fuel Filler Cap - SECURE and VENT CLEAR
(Continued Next Page)
172SPHBUS-02 4-7