Flap Position Indicator B-24 Liberator, PB4Y Privateer, WWII GE DJ11 Korean War

Flap Position Indicator B-24 Liberator, PB4Y Privateer, WWII GE DJ11 Korean WarThis is a Flap Position Indicator as used in the WWII era Consolidated US Army Air Force B 24 Liberator Heavy Bomber (see 2 cockpit photos and photo from the B 24 Pilots Manual dated 1944) and the US Navy's PB4Y4 Privateer Patrol Bomber (see photo from Flight Manual dated 1945). Made by General Electric, Type DJ11. The indicator provided visual information on the angle of extension of the wing flaps during take off and landing, measured from full up

It was for aircraft with shallow/slow climb/descent speed i

The equipment is basically a 15 tube superheterodyne radio receiver with the addition of certain essential circuits necessary for radio compass operation

each which rotate as the pressures change

measured from full up at 0 degrees to 40 degrees fully extended downward

WWII-era US Navy Douglas SBC Dive Bombers as well as early 'birdcage' versions of the Vought F4U-1 Corsair Fighter

This altimeter crudely measured altitude from 0-12

including bombers B-17 Flying Fortress

part number 200DCFM

The indicator provided visual information on the angle of extension of the wing flaps during take-off and landing

and bears a serial number indicating a year of manufacture of 1943

It is mostly filled with fluid and the compass card rotates

It was published in March 1942 under the authority of the Secretary of the Navy