CSP
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E
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1
ROTORCRAFT FLIGHT MANUAL
Performance Data
MD 500E
(Model 369E)
Revision 14
5
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4
FAA Approved
5
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3. AIRSPEED CALIBRATION
Description:
The chart shows the difference between indicated and calibrated airspeeds.
Indicated airspeed (IAS) corrected for position and instrument error equals
calibrated airspeed (CAS).
Use of Chart:
To determine calibrated airspeed, the pilot must know the indicated air-
speed.
Example
WANTED: Calibrated airspeed
KNOWN: Indicated airspeed = 120 knots
METHOD: Enter the bottom of the chart at the indicated airspeed of 120
knots. Move up to the airspeed calibration line; move left and read 120.5
knots, calibrated airspeed.
By entering the chart from the opposite direction, calibrated airspeed
may be converted to indicated airspeed.