Collision with Terrain, Promech Air, Inc., De Havilland DHC-3, N270PA, Ketchikan, Alaska, June 25, 2015
Collision with Terrain Promech Air, Inc. de Havilland DHC-3, N270PA Ketchikan, Alaska June 25, 2015 Accident Report NTSB/AAR-17/02 National PB2017-102178 Transportation Safety Board NTSB/AAR-17/02 PB2017-102178 Notation 56539 Adopted April 25, 2017 Aircraft Accident Report Collision with Terrain Promech Air, Inc. de Havilland DHC-3, N270PA Ketchikan, Alaska June 25, 2015 National Transportation Safety Board 490 L’Enfant Plaza, S.W. Washington, DC 20594 National Transportation Safety Board. 2017. Collision with Terrain, Promech Air, Inc., de Havilland DHC-3, N270PA, Ketchikan, Alaska, June 25, 2015. Aircraft Accident Report NTSB/AAR-17/02. Washington, DC. Abstract: This report discusses the June 25, 2015, accident in which a turbine-powered, float-equipped de Havilland DHC-3 airplane, N270PA, operated by Promech Air, Inc., collided with mountainous, tree-covered terrain about 24 miles east-northeast of Ketchikan, Alaska. The commercial pilot and eight passengers sustained fatal injuries, and the airplane was destroyed. Safety issues discussed in this report relate to the need for training program improvements for Ketchikan air tour operators that address pilot human factors issues, such as assessment of safe weather conditions, recognition of potentially hazardous local weather patterns, and operational influences on decision-making; the need for collaboration among Ketchikan air tour operators to identify and mitigate operational hazards through analysis of automatic dependent surveillance-broadcast data; the lack of conservative weather
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