Fuel Drain Valves - Cessna 172R Operating Handbook

SECTION 7
AIRPLANE SYSTEMS DESCRIPTION
&
the
When
uncoordinated flight such as slips or skids can uncover the
fuel tank outlets. Therefore, if operating with one fuel tank
dry or if operating on
do not allow the airplane to remain in uncoordinated
less,
periods in excess of
flight for

FUEL DRAIN VALVES

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 each flight and after
each refueling, by
|each
wing tank
fuel contamination is found, it
with the Preflight Inspection checklist and the discussion in Section
8 of this publication. If takeoff
permit, the fuel tanks
condensation.
7-28
NOTE
are
fuel tanks
LEFT or RIGHT tank when 1/4
using the sampler cup provided
sump and the fuel strainer sump. If any evidence of
be filled after each flight to prevent
should
or
1/4 full
seconds.
30
eliminated in accordance
must be
limitations for the next flight
weight
CESSNA
MODEL 172R
less, prolonged
full or
to drain fuel from
Feb 28/00