- Date
- October 9, 1984, 14:15 local (20:15 UTC)
- Place
- Cheyenne, WY
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N3912TBell 206B
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19841009054769A
- Case key
- 16504
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.
In flight collision with object
Rotor system,tail rotor blade - loss,partialFactor
Judgment - inaccurateCause
Rotorcraft flight control,tail rotor pedal - vibrationFactor
Proper descent rate - not attainedCause
Object - wire,transmission
Roll over
Terrain condition - open field
Light condition - daylight
Analysis
The helicopter's tail rotor section contacted a pwr line during an attempted takeoff. A section of tail rotor blade tipwas found beneath the pwr lines. The pilot reported a vibration in the tail rotor control pedals. He attempted a landing into an open field. During the touchdown the helicopter spun to the right and rolled coming to rest on its left side.
Aircraft
- Registration
- N3912T
- Reported as
- Bell 206B
- Category
- Helicopter
- Serial number
- 3273
- Airframe hours
- 21,723
- Engine
- Allison 250-C20B, 317 horsepower, turbo shaft
- Damage
- Substantial damage
- Flight
- Business · Part 91
- Registered owner
- Associates Helicopter Services
- Airworthiness certificate
- Standard, Normal
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 37
- Certificate
- Airline transport
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Helicopter
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Right
- Flight hours
- 5,800 total · 1,152 in this make and model · 87 in the last 90 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 5 knots
- Visibility
- 50 statute miles
- Lowest ceiling
- None
- Temperature
- 61 °F, dew point -0 °F
- Altimeter
- 29.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.