Amateur-built II accident near Ogden, Utah, July 20, 1982
On July 20, 1982 at about 8:00 pm local time, a amateur-built II, registered N50733, was destroyed in an accident near Ogden, Utah (Ogden Muni airport). It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured. 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 November 2, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 20, 1982 · about 8:00 pm local time · cases in 1982
- Place
- Ogden, Utah · Ogden Muni
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built II
- Registration
- N50733 · registry record · serial 105
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT REPORTED THAT DURING TAKEOFF, HE EXPERIENCED A 400 RPM DROP IN THE ENGINE SPEED. HE BEGAN A RIGHT TURN TO LAND ON RUNWAY 04, BUT REPORTEDLY, THE ENGINE THEN STOPPED. THE PILOT INTENDED TO LAND ON THE HULL WITH THE GEAR RETRACTED; HOWEVER, THE PLANE "PANCAKED" ONTO A SMALL RIDGELINE AND WAS BADLY DAMAGED. AN INVESTIGATION REVEALED THAT THE CARBURETOR HEAT CONTROL LEVER WAS IN THE "OFF" (COLD) POSITION, BUT THE CARBURETOR HEAT CONTROL DOOR WAS IN THE HOT POSITION. THE CONTROL CABLE HAD SLIPPED OUT OF POSITION AT THE CLAMP WHICH SECURED IT TO THE ENGINE PYLON. THE ENGINE DRIVEN FUEL PUMP WAS FOUND FRACTURED, BUT NO FUEL STAINS WERE FOUND IN THE AREA OF THE PUMP. LATER, THE ENGINE WAS PREPARED FOR A RUN-UP, AND SUBSEQUENTLY, IT OPERATED NORMALLY. THE DENSITY ALTITUDE WAS ABOUT 9700 FT.
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: airline transport pilot, commercial pilot
- Ratings: multi-engine land; single-engine land; single-engine sea; instrument: airplane; rotorcraft: glider
- Flight time: 22,161 hours in all; 164 in this make and model; 9 in the last 90 days; 22,083 as pilot in command
- Medical certificate: Unknown (valid medical--w/ waivers/lim.)
- Seat: unk
The aircraft
- Airframe total time: 164 hours
- Last inspection: inspection type not recorded; 67 hours since
- Maximum gross weight: 2,900 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-320 (piston); 0 hours total
The flight
- Departed from: Ogden UT at 1:58 pm
- Destination: Rawlings WY
- Flight plan: none
- Runway 16, 5,349 ft by 200 ft
Weather at the time
- Light: daylight
- Wind: from 130° at 8 knots
- Sky: not recorded; 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.
Connections how this case links to the rest of the register
- N50733 on the register today · the tail number may have moved to another aircraft since
- Engine: Lycoming O-320 27,303 aircraft carry this series today · as the NTSB recorded it
- Accidents and incidents in Utah 1,440 since 1982 · 264 in the last ten years
- Utah 8,357 aircraft registered
The whole map of how records connect · these connections as data: /graph/accident/DEN82FTM14.json.
The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.
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 does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.