SOLOY TURBINE PAC
SECTION 3
POHS CESSNA U/TU206G
EMERGENCY PROCEDURES
3-15
F.A.A. Approved
October 4, 2005
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 or the turn and bank indicator if he
inadvertently flies into clouds. The following instructions assume that
only the electrically powered turn coordinator or the turn and bank
indicator is operative, and that the pilot is not completely proficient in
instrument flying.
EXECUTING A 180
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 hands off the control
wheel as much as possible and steering only with rudder.
EMERGENCY DESCENT THROUGH CLOUDS
If conditions preclude re-establishment of VFR flight by a 180
turn, a
descent through a cloud deck to VFR conditions may be appropriate.
If possible, obtain radio clearance for an emergency descent 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 compass heading and make minor corrections
to hold an approximate course.
UNCONTROLLED
COPY