- Date
- June 16, 1986, 08:45 local (13:45 UTC)
- Place
- Theriot, LA
- Injuries
- 1 serious
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N229EHAerospatiale AS35OD
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19860616025309A
- Case key
- 22047
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
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.
Aircraft
- Registration
- N229EH
- Reported as
- Aerospatiale AS35OD
- Category
- Helicopter
- Serial number
- 1227
- Airframe hours
- 2,278
- Engine
- Lycoming LTS101600A-2, 531 lbs thrust, turbo shaft
- Damage
- Substantial damage
- Flight
- Part 135
- Registered owner
- Energy Helicopters
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · June 13, 1986 · 11 hours before
- Departed
- HUM · Houma, LA
- Flight plan
- VFR
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 42
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Medical
- Class 1, Valid Medical--w/ waivers/lim
- Seat
- Right
- Flight hours
- 7,893 total · 576 in this make and model · 7,833 as pilot in command · 77 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 7 statute miles
- Lowest ceiling
- None
- Temperature
- 81 °F, dew point 64 °F
- Altimeter
- 30.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.