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Accidents · NTSB SEA93FA033 · Final report

Beech 35-33 accident near Riverton, Utah, December 9, 1992

On December 9, 1992 at about 10:45 pm local time, a Beech 35-33, registered N755AA, was destroyed in an accident near Riverton, Utah. It was a personal flight under general aviation rules (Part 91). 1 person was killed. The weather was conditions the NTSB did not record.

The NTSB's probable cause their words, unchanged

TERRAIN CLEARANCE WAS NOT MAINTAINED. FACTORS TO THE ACCIDENT WERE: SNOW AND FLIGHT INTO KNOWN ADVERSE WEATHER.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
December 9, 1992 · about 10:45 pm local time
Place
Riverton, Utah · map
Type
Accident
Injuries
1 person was killed.
Weather
conditions the NTSB did not record
Aircraft
Beech 35-33 · all 35-33s on the register
Registration
N755AA · registry record · serial CD-100
Damage
Destroyed
Flight
Personal flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

IT WAS REPORTED BY THE PILOT'S SON THAT PRIOR TO DEPARTING FOR THE FLIGHT, THE PILOT WAS AWARE OF THE POOR WEATHER CONDITIONS ALONG THE ROUTE OF FLIGHT. THE SON AND ANOTHER PILOT WERE FLYING IN A TWIN ENGINE AIRPLANE, AND THE FATHER WAS IN THE SINGLE ENGINE AIRPLANE. THE SON STATED THAT HIS FATHER TOOK OFF ABOUT EIGHT MINUTES BEFORE THEIR FLIGHT AND TURNED TOWARD THE NORTHWEST, WHILE THE SON TOOK OFF AND TURNED TO THE NORTHEAST TO FOLLOW THE VALLEY SOUTH. THE SON REPORTED THAT THE WEATHER FRONT WAS RUNNING ACROSS THE VALLEY AND THAT LIGHT SNOW WAS FALLING AND VISIBILITY WAS POOR AT THE TIME. THE WRECKAGE WAS FOUND ALONG THE WEST SIDE OF THE VALLEY NEAR ROLLING HILLS APPROXIMATELY SEVEN MILES SOUTH OF THE AIRPORT. A WITNESS REPORTED THAT HE HEARD THE CRASH BUT COULD NOT SEE IT DUE TO THE FALLING SNOW. POST CRASH INVESTIGATION DID NOT REVEAL EVIDENCE OF A MECHANICAL FAILURE OR MALFUNCTION.

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: multi-engine land; single-engine land
  • Flight time: 990 hours in all; 263 as pilot in command
  • Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 6,472 hours
  • Last inspection: annual inspection, August 1, 1992; 34 hours since
  • Maximum gross weight: 2,900 lb
  • Seats: 4
  • Landing gear: retractable
  • Engine: Continental IO-470-J (piston); 0 hours total

The flight

  • Departed from: U42 Salt Lake City UT at 10:30 pm
  • Destination: PVU Provo UT
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 350° at 11 knots
  • Visibility: 2 statute miles
  • Sky: overcast at 2,400 ft; not recorded
  • Temperature: 34°F (1°C), dew point 0°F (-18°C)
  • Altimeter: 30.00 inHg
  • Observation at 10:50 pm from SLC, 17 miles away

Injuries

FatalSeriousMinorNone
Crew1

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.