Ryan NYP In-Flight Cockpit Instrument Cluster and Throttle Controls (View 3) (May 1927)

In-flight cockpit panel photograph showing flight instruments and throttle controls during cruise testing. — Ryan NYP In-Flight Cockpit Instrument Cluster and Throttle Controls (View 3) (May 1927) · Donald A. Hall Estate Collection

A third archival in-flight photograph of the Ryan NYP instrument cluster taken by Donald A. Hall Sr. during airspeed and compass calibration runs. The exposure details the Pioneer Earth Inductor Compass indicator, altimeter, tachometer, turn-and-bank indicator, liquid column gauge, and lower fuel control valves in operating flight configuration, documenting flight stability and instrument response during trials.