Cessna Skyhawk 172N Pilot Operating Handbook page 235

Supplement POH
Reims/Cessna (F) 172 N&P
with TAE 125-02-114
(9) Left Static Source Opening - CHECK for blockage
(10) Fuel cooler baffle - CHECK
•
REMOVE, if OAT on ground is higher than 20°C
(68°F)
•
INSTALL, if OAT on ground is lower than 20°C
(68°F)
(6) LEFT WING
(1) Fuel Quantity - CHECK VISUALLY for desired level
not above marking in fuel filler
(2) Fuel Filler Cap - SECURE
(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 the right type
of fuel (Diesel or JET-A1) 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 previous WARNING (see right
wing) and do not fly airplane.
(4) Main Wheel Tire - CHECK for proper inflation and
general condition (weather checks, tread depth and
wear, etc.)
(7) LEFT WING Leading Edge
(1) Pitot Tube Cover (if mounted) - REMOVE and CHECK
for pitot blockage
(2) Fuel Tank Vent Opening - CHECK for blockage
(3) Stall Warning Opening - CHECK for blockage
To check the system, place a clean handkerchief over
the vent opening and apply suction; a sound from the
warning horn will confirm system operation.
(4) Wing Tie-Down - DISCONNECT
Page 4-5
Issue 2
Revision 7, Jan. 2018