Probable cause
A total loss of engine power in flight for undetermined reasons.
NTSB analysis
The pilot reported that he was in cruise flight when he heard a “pop” and the engine lost all power. He initiated an autorotation to a clearing, but was unable to reach it and had to land in an area with trees. The helicopter struck treetops during the descent and landed hard, sustaining structural damage. A postaccident inspection, including running the engine in a test cell, disclosed ample uncontaminated fuel, and no evidence of any preimpact mechanical problems with the helicopter’s engine or systems.
Text from the NTSB. Open the NTSB docket for ANC10LA020 for the full record.
Event
- Date
- Mar 6, 2010
- Type
- Accident
- Place
- Delta Junction, Alaska
- Highest injury
- Serious
- Serious injuries
- 1
- Weather
- Visual (VMC)
- Light
- Day
Mcdonnell Douglas Helicopter 369E
- N-number
- N26TC
- Category
- Helicopter
- Damage
- Substantial
- Operating rule
- Part 135 (charter and commuter)
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.