Textron Cessna 172S Skyhawk SP, Information Manual

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CESSNA
MODEL 172S
WING FIRE
SECTION 3
EMERGENCY PROCEDURES
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I
1. LandinglTaxi Light Switches -. OFF,
2. Navigation Light Switch _. OFF.
3, Strobe Light Switch -- OFF.
4. Pitot Heat Switch -- OFF.
NOTE
Perform a sideslip to keep the. flames away from the fuel
tank and cabin. Land as soon as possible using flaps only
as required foi final approach and touchdown .
ICING
INADVERTENT ICING ENCOUNTER
.1. Turn pitot heat switch ON.
2. Turn back or change altitiJde to, obtain an outside air
temperature that is less conducive to icing.
3. Pull cabin heat control full out and open defroster outlets
to obtain maximum windshield defroster airflow. Adjust cabin
air control to get maximum defroster heat and airflow.
4. Watch for 'signs of engine~related 'icing conditions., An
unexplained loss in engine speed could be caused by ice
blocking the air intake filter, or, in extremely rare instances,
ice completely blocking the fuel injection air reference tubes.
Change the throttle position to obtain maximum RPM. This
may require either advancing or retarding the throttle,
dependent on where ice has accumulated in the system.
Adjust mixture, as required, for maximum RPM.
5. Plan a landing at the nearest airport. With an extremely rapid
ice build up, select a suitable "off airport" landing site.
6. With an ice accumulation of 1/4 inch or more on the wing
leading edges, be prepared for significantly higher stall speed
and a longer landing roll.
7. Leave wing flaps retracted. With a severe ice build up on the
horizontal tail, the change in wing wake airflow direction
caused by wing flap extension could result in a loss of
elevator effectiveness.
8. Open left window and, if practical, scrape ice from a portion of
the windshield for visibility in the landing approach.
9. Perform a landing approach using a forward slip" if necessary,
, for improved visibility. ' .
Revision 4
3-9