- Date
- July 27, 1984, 10:30 local (15:30 UTC)
- Place
- Grove, OK
- Injuries
- 1 minor, 2 uninjured
- Damage
- Destroyed
- Phase of flight
- Initial climb
- Aircraft
- N2837BBell 47J
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19840727035729A
- Case key
- 21410
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 stated that yaw control was lost during climb out for a local flt with two passengers onboard. The acft began torotate to the right and the antitorque pedals were ineffective. They were over buildings at the time so the plt held a minimum descent until clear of the buildings. The acft continued to rotate until ground impact. The acft rolled over on its right side and caught fire. Inspection of the acft revealed that both pins in the tail rotor drive u-joint has sheared due to unsufficient torque on the acorn nuts.
Aircraft
- Registration
- N2837B
- Reported as
- Bell 47J
- Category
- Helicopter
- Serial number
- 1720
- Airframe hours
- 3,493
- Engine
- Lycoming VO-435-A1E, 260 horsepower, reciprocating
- Damage
- Destroyed
- Fire
- On-Ground
- Flight
- Personal · Part 91
- Registered owner
- Ol' Country Boy, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · April 12, 1984 · 20 hours before
- Departed
- Grove, OK
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 42
- Certificates
- Airline transport, Flight instructor
- Airplane ratings
- Single-engine land, Single-engine sea, Multi-engine land
- Instrument ratings
- Helicopter, Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Front
- Toxicology
- Performed
- Flight hours
- 7,580 total · 400 in this make and model · 7,400 as pilot in command · 50 in the last 90 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 10° at 9 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 81 °F, dew point 68 °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.