Schweizer G-164A accident near Red Rock, Oklahoma, March 26, 1986
On March 26, 1986 at about 4:00 pm local time, a Schweizer G-164A, registered N991X, was substantially damaged in an accident near Red Rock, Oklahoma. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). No one was hurt; 1 person was on board or involved. 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
- March 26, 1986 · about 4:00 pm local time
- Place
- Red Rock, Oklahoma
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Schweizer G-164A
- Registration
- N991X · no longer on the register · serial 516
- Damage
- Substantial damage
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT NOSED OVER DURING A FORCED LNDG AFTER A POWER LOSS. THE PLT WAS ENROUTE TO A SPRAYING OPERATION AND ATTEMPTED A LANDING IN A PASTURE AFTER THE POWER LOSS. AN ON SCENE INVESTIGATION REVEALED NO DISCREPANCIES IN THE ENGINE OR FUEL SYSTEM. A SUCCESSFUL TEST RUN WAS LATER PERFORMED AT SWEARINGEN ACFT IN BRISTOW,OK ON 7/22/86. THE PLT WAS NEVER LOCATED AFTER THE ACCIDENT AND NO PLT ACC REPORT (NTSB FORM 6120.1) WAS EVER FILED.
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
- Medical certificate: Unknown (expired)
- Seat: ctr
The aircraft
- Last inspection: annual inspection, December 6, 1985; 6 hours since
- Maximum gross weight: 3,725 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-985 (piston); 0 hours total
The flight
- Departed from: F22 Perry OK at 2:45 pm
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 220° at 6 knots
- Visibility: 15 statute miles
- Sky: broken clouds at 2,200 ft
- Temperature: 61°F (16°C), dew point 52°F (11°C)
- Altimeter: 30.00 inHg
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.
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.