Textron Cessna 172S Skyhawk SP, Information Manual

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CESSNA
MODEL 172S
SECTION 4
NORMAL PROCEDURES
2. Main Wheel Tire -- CHECK for proper inflation and general
condition (weather checks, tread depth and wear, etc ...).
3. Fuel Tank Sump Quick Drain Valves -- 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 fuell.
drain
points until all contamination has. been removed. If
contaminants are still present, refer to WARNING below and
do not fly airplane.
A
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.
4. Fuel Quantity -- CHECK VISUALLY for desired level.
5. Fuel Filler Cap -- SECURE and VENT UNOBSTRUCTED.
@NOSE
1. Fuel Strainer Quick Drain Valve (Located on bottom of
fuselage) -- 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 fuell
selector,
until all contamination has been removed. If
contaminants are still present, refer to WARNING above and
do not fly the airplane.
Revision 4
4-9