Performance Data
CSP–520N–1
MD 520N (500N) ROTORCRAFT FLIGHT MANUAL
TM
Original
5–2
FAA Approved
5–3. AIRSPEED CALIBRATION CURVE
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:
Use the chart as illustrated by the example. To determine calibrated air$
speed, the pilot must know the indicated airspeed.
Example:
WANTED: Calibrated airspeed
KNOWN: Indicated airspeed = 130 knots
METHOD: Enter the bottom of the chart at the indicated airspeed of 130
knots. Move up to the airspeed calibration line; move left and read 131
knots, calibrated airspeed.
NOTE
:
By entering the chart from the opposite direction, calibrated airspeed may be
converted to indicated airspeed.
