- Date
- November 25, 1983, 09:30 local (17:30 UTC)
- Place
- Rocklin, CA
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- UNREGBensen B8M
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- Case key
- 24093
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 plt was operating his home built, non-registered gyrocopter as an ultralight vehicle. Reportedly, the eng lost power during flt, and subsequently, the gyrocopter was damaged during a forced landing. According to the plt, he encountered carburetor icing which resulted in the loss of power. The eng was not equipped with a carburetor heat sys. Also, the temp & dew point were 49 & 41 deg, respectively. According to icing probability charts, a float type carburetor could encounter serious carburetor icing conditions at those temps.
Aircraft
- Registration
- UNREG
- Reported as
- Bensen B8M
- Category
- Gyroplane, amateur-built
- Serial number
- JH-2
- Airframe hours
- 2
- Engine
- Mcculloch UNKNOWN, 72 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- John T. Hall
- Registered owner
- None
- Departed
- Lincoln, CA
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 37
- Airplane ratings
- Single-engine land
- Medical
- Unknown, Expired
- Seat
- Center
- Flight hours
- 110 total · 102 in this make and model · 102 as pilot in command · 2 in the last 90 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 350° at 4 knots
- Visibility
- 50 statute miles
- Lowest ceiling
- None
- Temperature
- 48 °F, dew point 41 °F
- Altimeter
- 30.00 inHg
- Observed at
- SAC, 19 nm away