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Wheel and Flap Position Indicator, AN5780-T3, US Navy R88I-1888-000

General Electric

Wheel and Flap Position Indicator, AN5780-T3, US Navy R88I-1888-000


This is a late WWII-era and Post WWII Wheel and Flap Position Indicator, Type AN5780-T3, as used in  aircraft of the US Navy with either tricycle landing gear (i.e., nose wheel) or tail wheel configurations. Instrument #R88I-1888-000 was used across numberous US Navy aircraft, including F4U Corsair, F8F Bearcat fighters, F9F Cougar jet fighter, AD-1 Skyraider, and others.

When the individual wheels are down, the rotating display for each wheel shows an extended image of a wheel.  When the wheels are retracted, the display rotates to display "UP".  In between when the landing gear is unlocked, the diagonal lines are displayed. As the flaps are deployed, the upper center indicator displays a flap symbol along the scale showing the amount of flap deployed, i.e., full Up, 1/4, 1/2, 3/4, full Down. This design went on to become standard in many post war aircraft both in the US Air Force and US Navy.

This indicator is in exceptional condition for its age. The glass and case are intact, and the markings on the face are precise and unblemished.  Measures 3.25 inches diameter and ~3 inches deep.

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