Instrument Flying, Advanced, Instructor Syllabus, USAAF WWII F-80 The #4 pointer appears to

The #4 pointer appears to be loose but might be able to be re-inserted firmly

The vacuum is generated by either a engine-powered vacuum pump or externally-mounted power venturi tube

This is a dual engine Intercooler Flap Position Indicator as appeared on the US Air Force's Korean War-era Boeing B-50 Superfortress

The third section describes various gun turrets and their operation

But it is still a fine specimen given its age

Instrument Flying, Advanced, Instructor Syllabus, USAAF WWII F-80 The #4 pointer appears toThis is an original WWII era Instructor Syllabus of the instruction manual for Advanced Instrument Flying, covering Radio Range and Radio Compass, TO 30 100B 2 dated March 1944. It is in very good condition given its age. It came to us from the estate of a B 17 flight instructor.