Mooney M20G accident near Rigby, Idaho, July 12, 1995
On July 12, 1995 at about 2:30 pm local time, a Mooney M20G, registered N3936N, was substantially damaged in an accident near Rigby, Idaho (Rigby-Jefferson County airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE PILOT'S PREMATURE LIFTOFF AND FAILURE TO ATTAIN ADEQUATE AIRSPEED DURING TAKEOFF. THE HIGH DENSITY ALTITUDE WAS A FACTOR.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 12, 1995 · about 2:30 pm local time
- Place
- Rigby, Idaho · Rigby-Jefferson County · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Mooney M20G · all M20Gs on the register
- Registration
- N3936N · no longer on the register · serial 68-0063
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT STATED THAT AT 65 MPH ON TAKEOFF, A SUDDEN CROSSWIND GUST HIT THE AIRPLANE, LIFTING IT INTO THE AIR, AND THAT HE COULD NOT SUBSEQUENTLY MAINTAIN ALTITUDE AT FULL POWER. HOWEVER, A WITNESS AT THE AIRPORT STATED THAT HE NOTICED NO UNUSUAL WIND GUSTS DURING THE EVENT. WITNESSES STATED THAT THE AIRPLANE WENT RIGHT WING DOWN, LEFT WING DOWN, RIGHT WING DOWN AGAIN, THEN LEFT WING DOWN, CONTACTING THE GROUND; AND THAT THE AIRPLANE THEN CRASHED INTO A FIELD. A NEARBY WEATHER OBSERVATION FACILITY REPORTED THE WIND AS SOUTHERLY AT 9 KNOTS. DENSITY ALTITUDE WAS 6,944 FEET. THE AIRCRAFT OWNER'S MANUAL INDICATES A ROTATION SPEED OF 65 TO 75 MPH AND A FLAPS 15 DEGREE/GEAR DOWN STALL SPEED OF 63 MPH.
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: private
- Ratings: single-engine land
- Flight time: 856 hours in all; 234 in this make and model; 11 in the last 90 days; 6 in the last 30 days
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 5,309 hours
- Last inspection: annual inspection, July 3, 1994; 69 hours since
- Maximum gross weight: 2,525 lb
- Seats: 4
- Landing gear: retractable
- Engine: Lycoming O-360-A1D (piston); 0 hours total
The flight
- Departed from: U56 at 2:30 pm
- Destination: BYI Burley ID
- Flight plan: none
- Runway 19, 3,500 ft by 50 ft
Weather at the time
- Light: daylight
- Wind: from 180° at 9 knots
- Visibility: 60 statute miles
- Sky: broken clouds at 20,000 ft; scat at 13,000 ft
- Temperature: 73°F (23°C), dew point 46°F (8°C)
- Altimeter: 29.00 inHg
- Observation at 2:47 pm from IDA, 10 miles away
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.