Ryan NYP Airborne Flight Calibration Over Camp Kearny (May 4, 1927)

Airborne photograph of the Spirit of St. Louis banking low over the terrain during Camp Kearny flight trials. — Ryan NYP Airborne Flight Calibration Over Camp Kearny (May 4, 1927) · Donald A. Hall Estate Collection

A vintage flight-test photograph capturing the Ryan NYP Spirit of St. Louis in flight over Camp Kearny during the May 4, 1927 performance evaluations. Viewed from ground level as the monoplane banks gently against an overcast sky, the image records flight stability, control response, and climb angle measurements logged by Donald Hall to verify aerodynamic calculations prior to transatlantic flight clearance.