- Date
- August 20, 1982, 09:00 local (14:00 UTC)
- Place
- Near Brooten, MN
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N4090GBell 47G-4A
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 20, 1983
- Report
- Approved by Office Director
- FAA report
- 19820820048659A
- Case key
- 71852
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 pilot had been engaged in a spraying operation for 2.5 hrs when he returned and landed on a flat bed type trailer to service the helicopter. After the hopper was serviced with 60 gal of herbicide, the pilot began his take off. He stated that just after lift-off, the helicopter lost power and yawed to the left. He stated that he attempted to cushion the landing with the collective, but the gear collapsed and the main rotor hit a fence. An examination revealed no discrepancies of the transmission or engine, except the spark plugs were severely worn. An engine run-up was made and it operated satisfactorily.
Aircraft
- Registration
- N4090G
- Reported as
- Bell 47G-4A
- Category
- Helicopter
- Serial number
- 7640
- Airframe hours
- 4,300
- Engine
- Lycoming VO-540-B1B3, 280 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Part 137
- Operator
- Bonanza Valley Aviation
- Registered owner
- Bonanza Valley Aviation
- Departed
- Near Brooten, MN
- Destination
- Near Brooten, MN
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 36
- Certificates
- Airline transport, Flight instructor
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Flight hours
- 8,460 total · 1,512 in this make and model · 175 in the last 90 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 225° at 5 knots
- Visibility
- 15 statute miles
- Temperature
- 140 °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.
Other investigations on N4090G · 1
Matched to the same aircraft by N-number and date.