Grumman AA-1B accident near Douglas, Wyoming, May 2, 1991
On May 2, 1991 at about 8:30 pm local time, a Grumman AA-1B, registered N1412R, was destroyed in an accident near Douglas, Wyoming. It was a positioning flight under general aviation rules (Part 91). 1 person was killed and 1 person was seriously injured. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
AN INADVERTENT STALL WITH INADEQUATE TERRAIN CLEARANCE. FACTORS INCLUDE FLIGHT IN MOUNTAINOUS TERRAIN AT AN ALTITUDE WHERE REMEDIAL ACTION WAS NOT POSSIBLE.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 2, 1991 · about 8:30 pm local time
- Place
- Douglas, Wyoming
- Type
- Accident
- Injuries
- 1 person was killed and 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman AA-1B
- Registration
- N1412R · no longer on the register · serial AA-1B-0512
- Damage
- Destroyed
- Flight
- Positioning flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE GRUMMAN AA-1B WAS OBSERVED BY ANOTHER AIRCRAFT FLYING AT LOW LEVEL WHEN IT ENTERED MOUNTAINOUS TERRAIN. THE WITNESS OBSERVED THE AIRCRAFT AT VERY LOW ALTITUDE IN A NOSE-HIGH ATTITUDE, THEN OBSERVED IT IN WHAT HE DESCRIBED AS A STALL IMMEDIATELY BEFORE IMPACTING TREES AND TERRAIN. THE PRIVATE PILOT IN THE LEFT SEAT OF THE GRUMMAN STATED THAT THE FLIGHT INSTRUCTOR IN THE RIGHT SEAT WAS FLYING THE AIRCRAFT AT THE TIME OF THE ACCIDENT.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
Pilot
- Certificate: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 567 hours in all; 26 in the last 90 days; 479 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: unk
The aircraft
- Last inspection: inspection type not recorded; 0 hours since
- Maximum gross weight: 1,560 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-235-C (piston); 0 hours total
The flight
- Departed from: FNL Fort Collins CO at 7:30 pm
- Destination: CPR Casper WY
- Flight plan: none
- Runway 0
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 120° at 7 knots
- Visibility: 35 statute miles
- Sky: overcast at 3,000 ft; not recorded
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
- Altimeter: 29.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.