Pilot Debrief

DEHAVILLAND DHC-3 near Aleknagik, AK — 2010-08-09

Final reportANC10MA068
Sign in to save
Date
2010-08-09
Location
Aleknagik, AK, USA
Aircraft
DEHAVILLAND DHC-3
Registration
N455A
Category
Airplane
Highest injury
Fatal
Fatalities
5

Probable cause

The pilot's temporary unresponsiveness for reasons that could not be established from the available information. Contributing to the investigation's inability to determine exactly what occurred in the final minutes of the flight was the lack of a cockpit recorder system with the ability to capture audio, images, and parametric data.

Contributing factors

Contributing to the investigation's inability to determine exactly what occurred in the final minutes of the flight was the lack of a cockpit recorder system with the ability to capture audio, images, and parametric data.

NTSB narrative

The Safety Board’s full report is available at http://www.ntsb.gov/publictn/A_Acc1.htm. The Aircraft Accident Report number is NTSB/AAR-11/03. On August 9, 2010, about 1442 Alaska daylight time, a single-engine, turbine powered, amphibious float-equipped de Havilland DHC-3T airplane, N455A, impacted mountainous, tree-covered terrain about 10 nautical miles (nm) northeast of Aleknagik, Alaska. The airline transport pilot and four passengers received fatal injuries, and four passengers received serious injuries. The airplane sustained substantial damage, including deformation and breaching of the fuselage. The flight was operated by GCI Communication Corp. (GCI), of Anchorage, Alaska, under the provisions of 14 Code of Federal Regulations Part 91. About the time of the accident, meteorological conditions that met the criteria for marginal visual flight rules were reported at Dillingham Airport, Dillingham, Alaska, about 18 nm south of the accident site. No flight plan was filed. The flight departed about 1427 from a GCI-owned private lodge on the shore of Lake Nerka and was en route to a remote sport fishing camp about 52 nm southeast on the Nushagak River.

NTSB coding

Evidence available

  • ATC audio
  • ADS-B / radar
  • Photos
  • 51 docket documents
View NTSB final reportView NTSB docket

Docket documentsshowing 50 of 51

Related mishaps