- Date
- September 26, 1986, 10:30 local (15:30 UTC)
- Place
- Baldwin, WI
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N9427FHughes 269B
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19860926048349A
- Case key
- 13531
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
After picking up his passenger at williams pipeline, minneapolis, Minnesota, the plt flew eastward along interstate 90 enroute to a pipeline near wausau, Wisconsin. While flying at approximatelly 400 feet, the plt and passenger stated that the engine started to make a grinding or knocking noise and that there was an almost instantaneous loss of power. The plt then dropped the collective and turned approximately 40 degrees to the sandy, upward sloping ground. The nose of the aircraft remained low and the tailboom raised. The main rotor blades then struck the tailboom. Wreckage examination revealed that the number four piston rod protruded through the engine case, which was cracked from the hole to the number four cylinder base.
Aircraft
- Registration
- N9427F
- Reported as
- Hughes 269B
- Category
- Helicopter
- Serial number
- 5-0174
- Airframe hours
- 4,240
- Engine
- Lycoming HIO-360-AIA, 180 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Business · Part 91
- Operator
- Dagnon Aviation
- Registered owner
- Paul A. Dagnon
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · September 17, 1986 · 10 hours before
- Departed
- Minneapolis, MN
- Destination
- Chippewa Falls, WI
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
- 25
- Certificate
- Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Flight hours
- 2,545 total · 200 in this make and model · 145 in the last 90 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 220° at 9 knots, gusting 11
- Visibility
- 8 statute miles
- Lowest ceiling
- None
- Temperature
- 82 °F, dew point 75 °F
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 N9427F · 4
Matched to the same aircraft by N-number and date.