Instrument Flight, Part 1 Basic Air Work, US Navy 1944 RCAF and Bell UH-1 and AH-1

and Bell UH-1 and AH-1 Cobra Helicopters per their maintenance manuals

They were essentially timers for communications radios that broadcast a fourteen second carrier wave every minute

as used in large aircraft in both British military and civil service during the 1950's in Reconnaissance/Bomber aircraft such as the Avro Shackleton and English Electric Canberra

and displays the direction on a compass card mounted at a 45 degree angle

Instrument Flight, Part 1 Basic Air Work, US Navy 1944 RCAF and Bell UH-1 and AH-1This original WWII era instructional book, Instrument Flight Part One, Basic Air Work, was published by the US Navy in 1944. This manual came to AeroAntique from the estate of a pilot of an SBD Dauntless Dive Bomber, although not marked with its former owner's name. The 155 page book measures ~4. 5 inches by ~7 inches, and is in good condition given its age.