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AUTOPILOT-OMNI SWITCH.
When a Nav-0-Matic autopilot is installed with two compatible omni
receivers, an autopilot-omni switch is utilized. This switch selects the
omni receiver to be used for the omni course sensing function of the auto-
pilot. The switch is mounted just to the right of the autopilot control unit
at the bottom of the instrument panel. The switch positions, labeled
"OMNI 1" and "OMNI 2", correspond to the omni receivers in the radio
panel stack.
TRUE AIRSPEED INDICATOR
A true airspeed indicator is available to replace the standard air-
speed indicator in your airplane. The true airspeed indicator has a cali-
brated rotatable ring which works in conjunction with the airspeed indi-
cator dial in a manner similar to the operation of a flight computer.
TO OBTAIN TRUE AffiSPEED, rotate ring until pressure altitude
is aligned with outside air temperature in degrees Fahrenheit. Then
read true airspeed on rotatable ring opposite airspeed needle.
6-6
NOTE
Pressure altitude should not be confused with indicated
altitude. To obtain pressure altitude, set barometric
scale on altimeter to "29. 92" and read pressure altitude
opposite needle on altimeter. Be sure to return alti-
meter barometric scale to original barometric setting
after pressure altitude has been obtained.
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