- Date
- September 4, 1986, 15:30 local (21:30 UTC)
- Place
- Chinook, MT
- Injuries
- 1 minor, 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N6401LGrumman AA-1A
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19860904046069A
- Case key
- 17046
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.
Loss of control - in flight
Lift-off - premature
TotalFactor
Stall/mush - inadvertentCause
In flight collision with object
Object - fence
Proper climb rate - not attainedFactor
Analysis
The acft took off on a 3900-foot dry asphalt rwy. An uncommanded left yaw developed which the plt was unable to counter. The acft struck a fence off the left side of the rwy and nosed over.
Aircraft
- Registration
- N6401L
- Reported as
- Grumman AA-1A
- Category
- Airplane
- Serial number
- AA1A-0401
- Airframe hours
- 1,054
- Engine
- Lycoming O-235-C2C, 108 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Alan D. Hamilton
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · January 9, 1986
- Departed
- S71 · Chinook, MT
- Destination
- HVR · Havre, MT
- Airport
- S71 · Chinook Muni, runway 26, 3,900 × 60 ft, asphalt
N6401LRegistration cancelled Apr 29, 2013 · American AA-1AAirframe modelAmerican AA-1AEngine modelLycoming 0-235 series
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
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 70 total · 7 in this make and model · 48 as pilot in command · 7 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 90° at 9 knots, gusting 12
- Visibility
- 65 statute miles
- Lowest ceiling
- 200 ft broken
- Temperature
- 72 °F, dew point 37 °F
- Altimeter
- 30.00 inHg
- Observed at
- HVR, 24 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.