B-17F Flying Fortress Familiarization Manual 1944 BT-12 which leads to a conclusion

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The company had been working on the APS-23 since mid-1945 and also intended to use this radar in a combined optical and electronic bombing system to be operated by one man

The Course Setting Bomb Sight

The autopilot flight controller was used by the pilot to turn and trim the aircraft while in automatic pilot mode

This listing includes the Computer (part number 12580-3) and the Handbook of Operation and Service Instructions T

B-17F Flying Fortress Familiarization Manual 1944 BT-12 which leads to a conclusionThis is an original WW II era Familiarization Manual for the US Army Air Force heavy bomber Boeing B 17F Flying Fortress. It is a serial number controlled document issued Oct 26, 1944. Included is a Center of Gravity Computer dated 1942. This 156 page, 8 x 5 x ~0. 5 inch manual contains all of the essential information for operating the B 17F. This manual is in very good condition. The brass colored lettering on the cover is somewhat tarnished, but