Radio Compass Bearing Indicator Type MN-40E Piasecki The A-3A autopilot system was

The A-3A autopilot system was pneumatically-operated

Advanced with Radio Aids (TO 30-100B-1

Across the inside of the ring are two horizontal

This instrument appeared on the P-3 Flight Status Panel in a section called Wind Leading Edge Skin Temp

It is specifically labeled for use in aircraft of the US Air Force

Radio Compass Bearing Indicator Type MN-40E Piasecki The A-3A autopilot system wasHere is a good example of a Radio Compass Bearing Indicator, Type MN 40E, The face and its use is very similar in appearance to the I 82 A indicator of a number of radio compass systems used during and after WWII. The Bendix data label does not contain any recognizable US military markings and may have been for a civil commercial aircraft. The indicator was connected via flexible mechanical cable to a rotatable loop antenna mounted either on the top