Autopilot, Directional Gyro, Type A-3A, Jack & Heintz Halifax an image of the spirit

an image of the spirit level can be seen projected vertically within the sighting tube

formation flight

OCAMA managed repairs and furnished spare parts for the B-52

The compass consists primarily of a cylindrical metal bowl filled with compass fluid

Autopilot, Directional Gyro, Type A-3A, Jack & Heintz Halifax an image of the spiritHere is a WWII era Directional Gyro module of the Type A 3A Automatic Pilot system, made by Jack & Heintz, with a serial # prefix of 42, indicating a manufacturing date of 1942, for the US Army Air Force. Would be connected with the Vertical Gyro module and the Speed Control Valves of the same system and installed on the flight control panel. The A 3A autopilot was used in bombers B 24C Liberator, B 25C,D,G Mitchell (see images from B 25 flight