- Date
- September 12, 1984, 16:30 local (22:30 UTC)
- Place
- Vernal, UT
- Injuries
- 1 minor, 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N1086YBell 206B
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19840912048179A
- Case key
- 16484
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
Plt stated that while on a heading of 050 degs (wind from 270 degs at 5 KTS) the acft began to shudder and veered to the right. Plt attempted remedial action but acft continued descending in a right spiral to ground contact. Examination of the helicopter did not disclose any mechanincal failure/malfunction. Bell helicopter Textron, inc., published information letter 206-84-41 dated July 6, 1984 in which it describes unanticipated right yaw as, '... The occurrence of an uncommanded right yaw rate which does not subside of its own accord and which, if not corrected can result in loss of aircraft control.' The plt was in the post solo phase of his helicopter training. One passenger was on board when the accident occurred.
Aircraft
- Registration
- N1086Y
- Reported as
- Bell 206B
- Category
- Helicopter
- Serial number
- 2988
- Airframe hours
- 2,587
- Engine
- Allison 250-C20B, 317 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Business · Part 91
- Operator
- Telestar Inc
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · September 8, 1984 · 8 hours before
- Departed
- Vernal, UT
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 40
- Certificate
- Private
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Right
- Flight hours
- 1,634 total · 57 in this make and model · 1,493 as pilot in command · 88 in the last 90 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 270° at 5 knots
- Visibility
- 40 statute miles
- Lowest ceiling
- None
- Temperature
- 39 °F
- Observed at
- VEL
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.