Emergency Operation In Clouds (Vacuum System Failure); Executing A 180 Degree Turn In Clouds; Emergency Descent Through Clouds - Cessna TR182 1979 Pilot Operating Handbook

CESSNA
MODEL TR182
SECTION 3
EMERGENCY PROCEDURES
The initial indication of an electrical fire is usually the odor ofburning
insulation. The checklist for this problem should result in elimination of
the fire.
EMERGENCY OPERATION
IN
CLOUDS
(Vacuum System Failure)
In the event of a vacuum system failure during flight. the directional
indicator and attitude indicator will be disabled, and the pilot will have to
rely on the turn coordinator
if
he inadvertently flies into clouds. The
following instructions assume that only the electrically-powered turn
coordinator is operative, and that the pilot is not completely proficient in
instrument flying.
EXECUTING A 180
0
TURN IN CLOUDS
Upon inadvertently entering the clouds, an immediate plan should be
made to turn back as follows:
1. Note the compass heading.
2. Note the time of the minute hand and observe the position of the
sweep second hand on the clock.
3. When the sweep second hand indicates the nearest half-minute,
initiate a standard rate left turn, holding the turn coordinator
symbolic airplane wing opposite the lower left index mark for 60
seconds. Then roll back to level flight by leveling the miniature
airplane.
4. Check accuracy of the turn by observing the compass heading
'which should be the reciprocal of the original heading.
5. If necessary, adjust heading primarily with skidding motions
rather than rolling motions so that the compass will read more
accurately.
6. Maintain altitude and airspeed
by
cautious application of elevator
control. Avoid overcontrolling by keeping the hands offthe control
wheel
B,S
much as possible and steering only with rudder.
EMERGEr..lCY DESCENT THROUGH CLOUDS
If conditions preclude reestablishment of VFR flight by a 180
0
turn, a
descent through a cloud deck to VFR conditions may be appropriate. If
possible, obtai.nradio clearance for an ern.ergencydescent through clouds.
To guard against a spiral dive, choose an easterly or westerly heading to
minimize compass card swings due to changing bank angles. In addition,
keep hands off the control wheel and steer a straight course with rudder
control by monitoring the turn coordinator. Occasionally check the
1 October 1978
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