Stopping Engine; Airspeed Data - Piper CHEROKEE CRUISER PA-28-140 Information Manual

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CHEROKEE CRUISER
Normally, the best technique for short and slow landings is to use full flaps and enough
power to maintain the desired airspeed and approach flight path. Mixture should be full rich,
fuel on the fullest tank, carburetor heat off, and electric fuel pump on. Reduce the speed during
the flareout and contact the ground close to the stalling speed (55 to 65 MPH). After ground
contact hold the nose wheel off as long as possible. As the airplane slows down, drop the nose
and apply the brakes. There will be less chance of skidding the tires if the flaps are retracted
before applying the brakes. Braking is most effective when back pressure is applied to the
control wheel, putting most of the aircraft weight on the main wheels. In high wind conditions,
particularly in strong crosswinds, it may be desirable to approach the ground at higher than
normal speeds with partial or no flaps.
STOPPING ENGINE
At the pilot's discretion, the flaps should be raised and the electric fuel pump turned off.
After parking, the air conditioner and radios should be turned off and the engine stopped by
pulling the mixture control to idle cut-off. The throttle should be left full aft to avoid engine
vibration while stopping. Then the magneto and master switches should be turned off and the
parking brake set.
AIRSPEED DATA
All airspeeds quoted in this manual are calibrated unless otherwise noted. Calibrated
airspeed is indicated airspeed corrected for instrument and position errors. The following table
gives the correlation between indicated airspeed and calibrated airspeed if zero instrument error
is assumed. This calibration is valid only when flown at maximum gross weight in level flight.
AIRSPEED CORRECTION TABLE
Flaps 0°
lAS-MPH
60
70
80
CAS - MPH
66
75
83
Flaps 40°
lAS - MPH
60
70
80
CAS-MPH
64
72
81
OPERATING INSTRUCTIONS
REVISED: JUNE 13, 1974
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