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Accidents · NTSB CHI85FA121 · Preliminary: the investigation is not finished

Mooney M20K accident near Coldwater, Ohio, February 23, 1985

On February 23, 1985 at about 8:30 pm local time, a Mooney M20K, registered N231GX, was destroyed in an accident near Coldwater, Ohio. It was a personal flight under general aviation rules (Part 91). 4 people were killed. 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
February 23, 1985 · about 8:30 pm local time
Place
Coldwater, Ohio · map
Type
Accident
Injuries
4 people were killed.
Weather
visual conditions (good weather)
Aircraft
Mooney M20K · all M20Ks on the register
Registration
N231GX · no longer on the register · serial 250251
Damage
Destroyed
Flight
Personal flight · general aviation rules (Part 91)

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

THE FLIGHT DEPARTED WITHOUT A PRE-FLIGHT INSPECTION, ENGINE RUN UP, OR RADIO CALL ON UNICOM. THE AIRCRAFT WAS OBSERVED DOING LOW ALTITUDE AEROBATIC MANEUVERS. WITNESSES OBSERVED THE AIRCRAFT NOSE OVER AND IMPACT THE GROUND IN A NEAR VERTICA ATTITUDE FROM ABOUT 200 FT AGL. THE ENGINE WAS HEARD TO BE OPERATING AT OR NEAR FULL POWER UP TO IMPACT.

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: multi-engine land; single-engine land; instrument: airplane; instrument: helicopter; rotorcraft: helicopter
  • Flight time: 2,275 hours in all
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 823 hours
  • Last inspection: annual inspection, October 10, 1984; 50 hours since
  • Maximum gross weight: 2,900 lb
  • Seats: 4
  • Landing gear: retractable
  • Engine: Continental TS10-360-GB1 (piston); 0 hours total

The flight

  • Departed from: COA Celina OH at 8:35 pm
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Visibility: 10 statute miles
  • Sky: clear
  • Temperature: 61°F (16°C), dew point 0°F (-18°C)

Injuries

FatalSeriousMinorNone
Crew1
Passengers3

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.