Piper PA-12 accident near Covington, Tennessee, September 15, 1988
On September 15, 1988 at about 6:00 pm local time, a Piper PA-12, registered N2833M, was substantially damaged in an accident near Covington, Tennessee. It was an aerial observation flight under general aviation rules (Part 91). 1 person had minor injuries. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- September 15, 1988 · about 6:00 pm local time
- Place
- Covington, Tennessee · map
- Type
- Accident
- Injuries
- 1 person had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-12 · all PA-12s on the register
- Registration
- N2833M · no longer on the register · serial 12-1270
- Damage
- Substantial damage
- Flight
- Aerial observation flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PLT REPORTED THAT THE ENGINE SUDDENLY BEGAN TO RUN ROUGH AND BACKFIRE DURING A PIPELINE PATROL FLIGHT AT 300 FT AGL. THE ROUGHNESS WORSENED AND THE PLT MADE A FORCED LDG ON A DIRT ROAD. DURING ROLLOUT, ONE OF THE WINGS CAUGHT VEGETATION BORDERING THE ROAD AND THE AIRPLANE VEERED OFF THE ROAD INTO A DITCH. EXAM OF THE AIRPLANE REVEALED THAT IT WAS SUPPLEMENTAL TYPE CERTIFICATED FOR THE USE OF AUTOMOTIVE GASOLINE, AND THAT IT WAS FUELED WITH AUTO GAS. EXAM OF THE LYC 0-290-D2 ENGINE REVEALED THAT THE #4 EXHAUST VALVE WAS STUCK OPEN, AND HEAVY CARBON DEPOSITS WERE PRESENT ON THE VALVE. THE VALVES IN THE #3 CYL WERE FOUND TO BE BURNED. LYCOMING DOES NOT RECOMMEND THE USE OF AUTO GAS IN LYCOMING ACFT ENGINES. SERVICE LETTER L199 NOTES THAT GUMS CAN FORM IN AUTO FUELS WHICH CAN CAUSE STICKING VALVES. FAA AC 91.33A CONTAINS SEVERAL CAUTIONS ON THE USE OF THE AUTO FUEL CONCERNING QUALITY CONTROL, GUM FORMATION, VOLATILITY & CARB ICING.
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: commercial pilot
- Ratings: single-engine land
- Flight time: 13,000 hours in all; 11,000 in this make and model; 300 in the last 90 days; 100 in the last 30 days; 13,000 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: rear
The aircraft
- Airframe total time: 6,568 hours
- Last inspection: 100-hour inspection, September 10, 1988; 5 hours since
- Maximum gross weight: 1,750 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-290-D2 (piston); 0 hours total
- Operator: NE Patrol, INC.
The flight
- Departed from: NONE Greenville MS at 1:20 pm
- Destination: M04 Covington TN
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 090° at 5 knots
- Visibility: 25 statute miles
- Sky: clear
- Temperature: 84°F (29°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.