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Piper PA-39 Twin Comanche C/R - Page 110

Piper PA-39 Twin Comanche C/R
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TWIN COMANCHE C/R
NOTE
When the instrument lights are on, the gear position lights are
dimmed for night flight.
/
The degree of wing flap extension and touch down speed vary with conditions, but under normal
conditions full wing flaps
(27
degrees) should be used during the final approach and landing to reduce stall
speed and to permit contact with the runway at a slower speed.
Contact the ground at the
minimum speed consistent with landing conditions.
For short, slow landings under normal conditions use full wing flaps, partial power, and hold the nose
up as long as possible before and after contacting the ground with the main wheels.
In high winds and crosswinds, it is desirable to approach a landing at higher than normal speeds with
half or no wing flaps. If a go-around is necessary apply full throttle, retract the landing gear, and slowly
retract the wing flaps.
During a crosswind approach hold a crabbed angle into the wind until ready to flare out for the
landing. Then lower the wing that is into the wind, reduce crabbed angle, and keep the wheels aligned to
the runway using rudder.
NOTE
Landings with a crosswind component greater than 20 miles per
hour should be avoided.
When extending or retracting wing flaps, do so a few degrees at a time to avoid an asymmetrical flight
condition which would result if one wing flap should stick.
Do not side slip with wing flaps extended.
Avoid prolonged side slip with a fuel selector set to a fuel cell with low fuel indication.
Prior to landing and early in the roll out the brakes should be checked for operation. After landing
maximum braking is achieved by retracting wing flaps and pulling back on the control wheel as wheel
brakes are applied.
CAUTION
It is possible for a pilot to inadvertently reach for the landing gear
selector switch instead of the wing tlap switch while there is still
enough lift on the wings to keep fuIl weight of the airplane off the
wheels and thus prevent the actuation of the landing gear safety
mechanism, causing retraction during the landing roll. If additional
braking is not needed, the wing flaps should be retracted after the
airplane has been maneuvered to a stop off the runway. If a
landing must be made without wheel brakes the airplane should be
flown to contact the ground at a slower speed and landed short on
the longest available runway.
The procedure for manualIy lowering the landing gear should be memorized and understood
completely so that it can be accomplished quickly in an emergency situation, such as a single engine
landing.
Landing check list:
1.
Oxygen (below 10,000 ft) - off.
2.
Seat belts - fastened.
PAGE
10
OPERATING INSTRUCTIONS
ISSUED: June 1,194O

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