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Accidents · NTSB CHI92LA047 · Final report

Beech B36TC accident near Mt Pleasant, Michigan, December 5, 1991

On December 5, 1991 at about 7:30 pm local time, a Beech B36TC, registered N6930C, was substantially damaged in an accident near Mt Pleasant, Michigan. It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was instrument conditions (cloud, fog or low visibility).

The NTSB's probable cause their words, unchanged

WATER IN THE FUEL, AND AN INADEQUATE PREFLIGHT BY THE PILOT.

Source: NTSB aviation accident database, copy made November 2, 2026. Docket and reports at the NTSB.

What the record shows

Date
December 5, 1991 · about 7:30 pm local time · cases in 1991
Place
Mt Pleasant, Michigan
Type
Accident
Injuries
No one was hurt; 2 people were on board or involved.
Weather
instrument conditions (cloud, fog or low visibility)
Aircraft
Beech B36TC · all B36TCs on the register
Registration
N6930C · registry record · serial EA-420
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

THE PILOT SAID THAT AFTER BEING CLEARED FOR AN IFR APPROACH, THE ENGINE LOST POWER. DURING AN EMERGENCY LANDING, THE AIRCRAFT STRUCK A TREE AND LOST PART OF THE RIGHT WING. THE AIRCRAFT THEN SLID TO A STOP WITH NO INJURIES TO THE PILOT OR PASSENGER. A POST-ACCIDENT EXAMINATION REVEALED THE PRESENCE OF WATER IN THE FLOW DIVIDER WHICH (BY THAT TIME) HAD FROZEN.

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; instrument: airplane
  • Flight time: 1,335 hours in all; 431 in this make and model; 75 in the last 90 days; 16 in the last 30 days; 1,238 as pilot in command
  • Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 932 hours
  • Last inspection: inspection type not recorded, January 30, 1991; 142 hours since
  • Maximum gross weight: 3,850 lb
  • Seats: 6
  • Landing gear: retractable
  • Engine: Continental TSIO-520-UB (piston); 0 hours total
  • Operator: Strong Manufacturing CO.

The flight

  • Departed from: AUG Augusta ME at 2:30 pm
  • Destination: MOP Mt Pleasant MI
  • Flight plan: IFR
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 120° at 9 knots
  • Sky: not recorded at 500 ft
  • Temperature: 16°F (-9°C), dew point 12°F (-11°C)
  • Observation at 6:55 pm from MBS, 20 miles away

Injuries

FatalSeriousMinorNone
Crew1
Passengers1

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

Aircraft
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Analytics

The whole map of how records connect · these connections as data: /graph/accident/CHI92LA047.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.