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Static Source Blocked
If erroneous readings of the static source instruments (airspeed, altimeter and VSI) are suspected
pull the alternate source valve
With this pulled refer to the alternate static source airspeed calibration table in section 5
Maximum airspeed and altimeter variation from normal are 5 knots and 50 feet over the normal
operating range with a window(s) closed. See section 5
Spins
INTENTIONAL SPINS ARE PROHIBITED IN THIS AIRPLANE.
Should an inadvertent spin occur, the following recovery procedure should be used:
1. Retard throttle to idle position
2. Place ailerons in the neutral position
3. Apply and hold full rudder opposite to the direction of the rotation
4. Just after the rudder reaches the stop, move the control wheel briskly forward far
enough to break the stall
5. Hold these control inputs until rotation stops. Premature relaxation of the control
inputs may extend the recovery
6. As rotation stops, neutralize rudder, and make a smooth recovery from the resulting
dive
NOTE
If disorientation precludes a visual determination of the direction of rotation, the symbolic airplane in the
turn coordinator may be referred to for this information
Rough Engine Operation or Loss of Power
Spark Plug Fouling
May be caused by a spark plug(s) becoming fouled by carbon or lead deposits
Can be verified by turning ignition switch momentarily from BOTH to either L or R position. An
obvious loss of power is evidence of spark plug or magneto trouble
Assuming spark plug
o Lean mixture to recommended lean setting for cruising flight
o If problem does not clear up in several minutes, determine if a richer mixture setting will
produce a smoother operation
o If not, proceed to the nearest airport for repairs using BOTH position of the ignition
switch unless extreme roughness dictates the use of a single ignition position
Magneto Malfunction
Sudden engine roughness or misfiring is usually evidence
Switching from BOTH to either L or R ignition switch position will identify which magneto is
malfunctioning
Select different power settings and enrichen the mixture to determine if continued operation on
BOTH magnetos is practicable
If not switch to good magneto and proceed to nearest airport for repairs
Engine Driven Fuel Pump Failure
Will be evidenced by a sudden reduction in the fuel flow indication immediately prior to a loss of
power, while operating from a tank that contains adequate fuel
Immediately turn the auxiliary fuel pump ON to restore the engine power
Flight terminated when practical and fuel pump repaired
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