Piper PA-22 accident near Slippery Rock, Pennsylvania, September 18, 1991
On September 18, 1991 at about 7:49 pm local time, a Piper PA-22, registered N9741D, was substantially damaged in an accident near Slippery Rock, Pennsylvania. It was a personal flight under general aviation rules (Part 91). 2 people had minor injuries. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE ON GROUND COLLISION WITH A FARM VEHICLE DURING LANDING ROLL OUT.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- September 18, 1991 · about 7:49 pm local time
- Place
- Slippery Rock, Pennsylvania · map
- Type
- Accident
- Injuries
- 2 people had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-22 · all PA-22s on the register
- Registration
- N9741D · no longer on the register · serial 22-6654
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
WHILE AT CRUISE ALTITUDE THE PILOT HEARD A BANG AND SAID ABOUT THE UPPER 1/3 OF THE WINDSHEILD HAD BROKEN. THE PILOT ELECTED TO MAKE A FORCED LANDING IN A FIELD AND STRUCK A FARM PLOW THAT WAS OBSTRUCTED FROM VIEW BY TALL GRASS. IT WAS NOT DETERMINED WHETHER THE WINDSHEILD WAS DEFECTIVE OR THEY STRUCK SOMETHING IN FLIGHT.
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: 2,880 hours in all; 1,625 in this make and model; 76 in the last 90 days; 23 in the last 30 days; 2,820 as pilot in command; 60 on instruments
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 4,982 hours
- Last inspection: annual inspection, September 11, 1991; 5 hours since
- Maximum gross weight: 2,000 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming O-320-B2A (piston); 0 hours total
The flight
- Departed from: 3G9 Butler PA at 7:35 pm
- Destination: NONE Mercer PA
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 250° at 15 knots, gusting 20
- Visibility: 15 statute miles
- Sky: broken clouds; not recorded
- Temperature: 81°F (27°C), dew point 0°F (-18°C)
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.