Wheel and Flap Position Indicator, 6531-1L-B Sunderland and curious

and curious

hence the suction gauge in the upper right corner to indicate the performance status of the pneumatic system

It covers instruments

flows past the throat

This 60-page book published in 1970 covers the development and operational history of the Grumman TBF/TBM Avenger Torpedo Bomber

Wheel and Flap Position Indicator, 6531-1L-B Sunderland and curiousWe believe that this highly unusual iWheel and Flap Position Indicator is Pre WWII era. This is the first example of this kind of the many that we have seen. It was used in aircraft with either tricycle landing gear (i. e., nose wheel) or tail wheel configurations. Made by Pioneer Bendix, part number 6531 1L B. Given that the serial number is 36, many may not have been eventually made. When the individual wheels are down, the rotating display for each