ASN Wikibase Occurrence # 21748
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Date: | Tuesday 15 July 2008 |
Time: | 09:26 |
Type: | Hughes 269B |
Owner/operator: | Ozark Mountain Helicopters, LLC |
Registration: | N469E |
MSN: | 45-0186 |
Year of manufacture: | 1965 |
Total airframe hrs: | 1800 hours |
Engine model: | Lycoming HIO-360-A1A |
Fatalities: | Fatalities: 2 / Occupants: 2 |
Aircraft damage: | Destroyed |
Category: | Accident |
Location: | near the Norfork Dam, AR -
United States of America
|
Phase: | En route |
Nature: | Survey |
Departure airport: | Willow Springs, MO (NA) |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The pilot flew to an off-airport location to pick up an electrical company employee. After being on the ground about eight minutes, the pilot and passenger then flew power line patrol looking for vegetation encroachment. One hour and 36 minutes after taking off one of the helicopter's main rotor blades impacted the middle strand of a crossing high voltage transmission line. The helicopter was destroyed by impact forces and postimpact fire. The impacted transmission line was approximately 100 feet above and crossed perpendicularly to the transmission line they were following. Examination of the helicopter wreckage revealed no preexisting anomalies that would have contributed to the accident.
Probable Cause: The pilot's failure to maintain clearance from the crossing transmission line.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | DEN08FA122 |
Status: | Investigation completed |
Duration: | 9 months |
Download report: | Final report |
|
Sources:
NTSB
Location
Revision history:
Date/time | Contributor | Updates |
16-Jul-2008 01:26 |
Fusko |
Added |
17-Jul-2008 10:28 |
Fusko |
Updated |
24-Jul-2008 11:38 |
Fusko |
Updated |
21-Dec-2016 19:14 |
ASN Update Bot |
Updated [Time, Damage, Category, Investigating agency] |
21-Dec-2016 19:16 |
ASN Update Bot |
Updated [Time, Damage, Category, Investigating agency] |
21-Dec-2016 19:20 |
ASN Update Bot |
Updated [Time, Damage, Category, Investigating agency] |
03-Dec-2017 11:29 |
ASN Update Bot |
Updated [Operator, Other fatalities, Departure airport, Source, Narrative] |
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