Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24. B-17 Dinah Reconaissance for aircraft of the US

for aircraft of the US Navy

as used in the German Luftwaffe aircraft Me109 G-K

Type 95 Model 3 Trainer

including any USN versions of the above such as the PB4Y Patrol Bomber

the short pointer begins to rotate clockwise

Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24. B-17 Dinah Reconaissance for aircraft of the USThe Pilot Director Indicator (PDI) was used during WWII in bombers of the US Army Air Force, including heavy bombers B 17 Flying Fortress, B 24 Liberator, and B 29 Superfortress and medium bombers B 25 Mitchell and B 26 Marauder, and US Navy's PBY5A Catalina and PB4Y Privateer. The PDI was located on the pilots instrument panel, and received signals from the bombardier to indicate his desired course changes, left or right, to obtain an accurate bomb