No fatalities

Engine Failure Leads to Ditching of Maintenance Test Flight Aircraft in Cook Inlet (N1590U)

Anchorage-Ted Stevens Intl, United States of AmericaLanding (descent or approach)

On November 14, 1971, a Cessna 207 Skywagon/Stationair (registration N1590U) operated by Alaska Aeronautical Industries was involved in an aviation accident near Anchorage-Ted Stevens Intl, United States of America during landing or approach. No fatalities were reported. Investigators recorded the probable cause as: Powerplant failure for undetermined reason. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 2 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

During a post-maintenance local test flight near Anchorage, the engine failed on approach. The pilot ditched the aircraft in Cook Inlet; both occupants were rescued but the airplane sank and was not recovered.

Incident Overview

A pilot and a technician were conducting a local test flight following maintenance at Anchorage. While approaching Anchorage International Airport, the aircraft experienced an engine failure. The pilot executed a ditching maneuver in the Cook Inlet, approximately several miles offshore. Both individuals were quickly rescued from the water, but the airplane sank and was lost. The wreckage has not been recovered.

Probable Cause

The official investigation determined that the probable cause of the accident was a powerplant failure for an undetermined reason. No further details regarding the nature of the failure were provided.

Aftermath

Emergency response teams reached the scene promptly, ensuring the safe recovery of the two occupants. No injuries have been reported. The loss of the aircraft and the absence of wreckage recovery have limited the ability to conduct a more detailed technical analysis.