Cessna 172N accident near Grass Valley, California, April 27, 1991
On April 27, 1991 at about 6:00 pm local time, a Cessna 172N, registered N737GY, was substantially damaged in an accident near Grass Valley, California (Nevada CO airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL AND TO ADEQUATELY COMPENSATE FOR THE WIND CONDITIONS RESULTING IN AN ON GROUND LOSS OF CONTROL AND SUBSEQUENT ON GROUND COLLISION WITH A DRAINAGE DITCH.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 27, 1991 · about 6:00 pm local time
- Place
- Grass Valley, California · Nevada CO · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 172N · all 172Ns on the register
- Registration
- N737GY · no longer on the register · serial 17269418
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE NEWLY CERTIFICATED PRIVATE PILOT SAID HE WAS INTO THE TAKEOFF GROUND ROLL WHEN A SUDDEN CROSS WIND GUST CAUSED THE AIRCRAFT TO WEATHER VANE. HE LOST DIRECTIONAL CONTROL, VEERED OFF THE RUNWAY AND COLLIDED WITH A DRAINAGE DITCH.
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: 93 hours in all; 62 in this make and model; 9 in the last 90 days; 5 in the last 30 days
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: unk
The aircraft
- Last inspection: inspection type not recorded, January 2, 2000
- Maximum gross weight: 2,400 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming O-320 (piston); 0 hours total
- Operator: Safari Air
The flight
- Destination: LVK Livermore CA
- Flight plan: none
- Runway 25, 4,300 ft by 50 ft
Weather at the time
- Light: daylight
- Wind: at 10 knots, gusting 15
- Visibility: 50 statute miles
- Sky: clear
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 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.