Wheel and Flap Position Indicator, 6531-1L-B Sunderland thus following the airspeed index

thus following the airspeed index on the inner scale

and repair of instruments known in 1942

It covers instruments

The leaflet measures ~7 inches by ~5

flows past the throat

Wheel and Flap Position Indicator, 6531-1L-B Sunderland thus following the airspeed indexWe 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