ASN Wikibase Occurrence # 374871
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| Date: | Monday 16 June 1986 |
| Time: | 08:45 LT |
| Type: |  Aerospatiale AS 350D |
| Owner/operator: | Energy Helicopters |
| Registration: | N229EH |
| MSN: | 1227 |
| Total airframe hrs: | 2278 hours |
| Engine model: | LYCOMING LTS101600A-2 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Theriot, LA -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Houma, LA (KHUM) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT EXPERIENCED A SUDDEN YAW IN THE HELICOPTER AT CRUISE FLIGHT. THE NG STARTED WINDING DOWN CONFIRMING AN ENGINE FAILURE. THE PILOT HAD TO EXTEND AN AUTOROTATION OVER A TREE LINE, WHICH CAUSED THE RPM TO DECREASE, AND MADE A HARD LANDING IN AN ADJACENT FIELD. DAMAGE TO THE HELICOPTER INCLUDED THE TAIL SECTION, LANDING GEAR AND MAIN ROTOR. INSPECTION OF THE ENGINE REVEALED THAT BOTH THE GEAR SPUR COMPRESOR SHAFT AND THE GEAR SPUR ACCESSORY DRIVE WERE MISSING TEETH. THE INSPECTION ALSO REVEALED THAT METAL FRAGMENTS FROM THE GEARS WERE DISTRIBUTED THROUGHOUT THE ENGINE'S LUBRICATION SYSTEM.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB FTW86LA119
History of this aircraft
Other occurrences involving this aircraft
| 10 November 2002 | N909WA | Fleet Unlimited, Inc. | 0 | Kingman, Arizona | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Mar-2024 13:48 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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