- Date
- July 2, 1982, 13:30 local (20:30 UTC)
- Place
- Jenner, CA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N1108THughes 369B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 2, 1983
- Report
- Approved by Office Director
- FAA report
- 19820702069789A
- Case key
- 71193
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
Helicopter was on routine police patrol when engine failed and it autorotated to a rough landing on a rocky beach. The 1st stage of the gas producer section of the turbine was found frozen. The turbine wheel blades were rubbing & seized to the 1st stage turbine shroud of the 2nd stage nozzle ass'y. pieces of the turbine blade's trailing edge tips were missing & there was a metal buildup on the 2nd stage nozzle blade track area. During disassembly the 1st stage wheel had to be forced apart to break it loose of the 2nd stage nozzle. Fractures of the blade tips appeared to be caused by elevated temperature creep resulting from either transient overtemperature or overspeed conditions.
Aircraft
- Registration
- N1108T
- Reported as
- Hughes 369B
- Category
- Helicopter
- Serial number
- 611000D
- Airframe hours
- 463
- Engine
- Allison 250-C20B, 420 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Part 91
- Operator
- Sondma County Sheriff
- Registered owner
- Sondma County Sheriff
- Departed
- C · Santa Rosa, CA
- Destination
- C · Santa Rosa, CA
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 36
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Helicopter, Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Flight hours
- 7,086 total · 500 in this make and model · 6,545 as pilot in command · 117 in the last 90 days · 19 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 325° at 15 knots
- Visibility
- 25 statute miles
- Temperature
- 154 °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.