Piper PA-18A-150 accident near Worland, Wyoming, March 28, 1983
On March 28, 1983 at about 1:30 am local time, a Piper PA-18A-150, registered N8977D, was substantially damaged in an accident near Worland, Wyoming. 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 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
- March 28, 1983 · about 1:30 am local time
- Place
- Worland, Wyoming · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-18A-150 · all PA-18A-150s on the register
- Registration
- N8977D · registry record · serial 1625
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT COLLIDED WITH A DITCH AND COLLAPSED THE LANDING GEAR DURING A FORCED LANDING AFTER THE ENGINE QUIT DURING A FERRY FLIGHT. THE PLT REFUELED THE EMPTY RIGHT FUEL TANK AND TOPPED-OFF THE LEFT TANK WITH 3 GALLONS OF FUEL BEFORE THE INITIAL TAKEOFF ON THE DAY OF THE ACCIDENT. THE PLT REPORTED THAT DURING THE FLT HE FLEW ON THE LEFT TANK UNTIL IT WAS ALMOST EMPTY BEFORE SWITCHING TO THE RIGHT TANK. SHORTLY AFTER SWITCHING TANKS THE ENGINE STOPPED. THE PLT SWITCHED BACKTO THE LEFT TANK AND WAS ABLE TO REGAIN POWER. BUT SOON THE ENGINE QUIT AGAIN AND THE PLT USED THE HAND PRIMER WHILE SWITCHING TO THE RIGHT TANK. THE ENGINE WOULD NOT RESTART SO THE PLT SELECTED A DIRT ROAD FOR LANDING. INVESTIGAITON REVEALED SEVERAL DISCREPANCIES IN THE FUEL SYSTEM. NO FILTER SCREEN WAS INSTALLED IN THE GASCOLATOR. THE MIXTURE CONTROLWAS NOT PROPERLY ATTACHED. THE RIGHT FUEL TANK WAS CONTAMINATED. THE RIGHT TANK DRAIN SUMP COULD NOT BE OPERATED. THE CARBURETOR CONTAINED WATER AND CONTAMINATION IN THE BOTTOM OF THE FLOAT CHAMBER.
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: 485 hours in all; 460 in this make and model; 90 in the last 90 days; 485 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Airframe total time: 3,073 hours
- Last inspection: annual inspection, April 4, 1982
- Maximum gross weight: 1,625 lb
- Seats: 1
- Landing gear: fixed
- Engine: Lycoming O-320-150 (piston); 0 hours total
The flight
- Departed from: TOR Torrington WY at 11:45 pm
- Destination: WRL Worland WY
- Flight plan: none
- Runway 0
Weather at the time
- Light: dusk
- Visibility: 20 statute miles
- Sky: scat at 15,000 ft
- Temperature: 39°F (4°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.