Engine failure and control cable breakage during emergency water landing near Thorne Bay

No fatalities • Thorne Bay, United States of America • Takeoff (climb)

A single-engine aircraft experienced engine power loss and a subsequent control cable failure during an emergency water landing, resulting in the aircraft sinking.

What happened

Following maintenance work performed in Thorne Bay, a single-engine aircraft was performing a flight back to its home base in Ketchikan. During the initial climb phase of the flight, the aircraft experienced a loss of engine power. In response to the engine failure, the pilot attempted to execute an emergency landing on the water.

During the process of landing on the surface, a control wire on the aircraft snapped. This mechanical failure caused the aircraft to pitch forward into the water, ultimately coming to rest in an inverted position. The aircraft subsequently sank at the scene.

Findings

  • The primary sequence of events began with a loss of power during the climb.
  • A control wire breakage occurred during the water landing attempt, which led to the aircraft nose-diving.
  • All three occupants were successfully recovered by the Coast Guard approximately 20 minutes after the incident.

Probable cause

The aircraft experienced an engine power loss during climb, followed by a structural failure of a control wire during the emergency water landing.

Frequently asked questions

What happened in the 1993-11-10 De Havilland DHC-3 Otter accident near Thorne Bay, United States of America?

A single-engine aircraft experienced engine power loss and a subsequent control cable failure during an emergency water landing, resulting in the aircraft sinking.

Were there any fatalities in the 1993-11-10 De Havilland DHC-3 Otter accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 1993-11-10 involved a De Havilland DHC-3 Otter, registration N98AT, operated by Ketchikan Air Service, at Thorne Bay, United States of America.

What was the probable cause of the accident?

The aircraft experienced an engine power loss during climb, followed by a structural failure of a control wire during the emergency water landing.

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