Mooney M20F accident near Ada, Oklahoma, December 22, 1983
On December 22, 1983, a Mooney M20F, registered N7165V, suffered minor damage in an accident near Ada, Oklahoma (Ada Municipal airport). It was a personal flight under general aviation rules (Part 91). 2 people were killed and 2 people were 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 October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- December 22, 1983
- Place
- Ada, Oklahoma · Ada Municipal · map
- Type
- Accident
- Injuries
- 2 people were killed and 2 people were seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Mooney M20F · all M20Fs on the register
- Registration
- N7165V · no longer on the register · serial 22-0074
- Damage
- Minor damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ENG LOST POWER SHORTLY AFTER TAKEOFF & THE ACFT STALLED WHILE IN A SLIGHT LEFT TURN. EXAMINATION REVEALED THAT THE LEFT WING FUEL SUMP DRAIN CONTAINED FROZEN WATER IN THE DRAIN PORTS. THE FUEL INJECTOR SCREEN, AFTER THAWING OUT, CONTAINED FROZEN WATER CONTAMINANTS. RUSTY WATER WAS FOUND IN THE FUEL INJECTOR. THE ACFT WAS LAST FUELED ON 12/10/83. THE ACFT WAS KEPT IN AN UNHEATED HANGAR. THE TEMPERATURE IN THE ADA AREA HAD BEEN IN THE AREA OF 10 DEG FOR SEVERAL DAYS PRIOR TO THE ACCIDENT.
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
- Flight time: 824 hours in all; 590 in this make and model; 40 in the last 90 days; 6 in the last 30 days
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 1,165 hours
- Last inspection: annual inspection, June 17, 1983; 72 hours since
- Maximum gross weight: 2,740 lb
- Seats: 4
- Landing gear: retractable
- Engine: Lycoming IO-360-A1A (piston); 0 hours total
The flight
- Destination: CHK Chickasha OK
- Flight plan: none
- Runway 35, 5,000 ft by 150 ft
Weather at the time
- Light: night, dark
- Wind: from 360° at 11 knots
- Visibility: 7 statute miles
- Sky: overcast at 1,500 ft; not recorded
- Temperature: 10°F (-12°C), dew point 5°F (-15°C)
- Observation at 11:58 pm from MLC, 50 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 1 | 2 |
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.