Boeing A75N1 accident near Yukon, Oklahoma, January 18, 1986
On January 18, 1986 at about 9:33 pm local time, a Boeing A75N1, registered N4935N, was substantially damaged in an accident near Yukon, Oklahoma (Page airport). 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 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
- January 18, 1986 · about 9:33 pm local time
- Place
- Yukon, Oklahoma · Page · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Boeing A75N1 · all A75N1s on the register
- Registration
- N4935N · registry record · serial 75-2087
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE LEFT BRAKE LOCKED AFTER THE AIRCRAFT ROLLED A SHORT DISTANCE DURING LANDING. AIRCRAFT SLOWED UNTIL ABOUT 20 MPH FORWARD SPEED AND THEN FLIPPED INVERTED AND STOPPED. POST ACCIDENT EXAMINATION REVEALED THE BRAKE SHOE RETURN SPRING ON THE LEFT BRAKE WAS BROKEN. REASON FOR THE SPRING FAILURE WAS NOT DETERMINED.
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
- Flight time: 376 hours in all; 154 in this make and model; 33 in the last 90 days; 236 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Airframe total time: 2,220 hours
- Last inspection: 100-hour inspection, September 15, 1985
- Maximum gross weight: 2,717 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental W670-6A (piston); 0 hours total
The flight
- Flight plan: none
- Runway 0, 5,000 ft
Weather at the time
- Light: daylight
- Wind: from 010° at 14 knots, gusting 18
- Visibility: 1 statute miles
- Sky: clear
- Temperature: 55°F (13°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 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.