Cessna 207 incident near Bellevue, Washington, July 10, 1985
On July 10, 1985 at about 6:30 pm local time, a Cessna 207, registered N1755U, suffered minor damage in an incident near Bellevue, Washington (None airport). It was a flight of an unrecorded kind under charter and air-taxi rules (Part 135). No one was hurt; 4 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 incident. 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
- July 10, 1985 · about 6:30 pm local time
- Place
- Bellevue, Washington · None · map
- Type
- Incident
- Injuries
- No one was hurt; 4 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 207 · all 207s on the register
- Registration
- N1755U · no longer on the register · serial 20700355
- Damage
- Minor damage
- Flight
- Flight of an unrecorded kind · charter and air-taxi rules (Part 135)
The NTSB's narrative final · quoted from the NTSB record
A COMPLETE LOSS OF POWER OCCURRED DURING A CFR 135 PASSENGER FLIGHT. THE OIL FILTER ADAPTER WAS FOUND TO BE SAFETY WIRED IN A POSITION WITH 3/4' OF THREADS VISABLE. CAUSING A COMPLETE AND SUDDEN LOSS OF OIL AND POWER.
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: airline transport pilot, flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 1,848 hours in all; 38 in this make and model; 131 in the last 90 days; 1,109 as pilot in command
- Medical certificate: Class 1 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 5,452 hours
- Last inspection: 100-hour inspection, June 28, 1985; 38 hours since
- Maximum gross weight: 3,800 lb
- Seats: 7
- Landing gear: retractable
- Engine: Continental IO-520-F9 (piston); 0 hours total
- Operator: San Uian Airlines
The flight
- Departed from: SEA Seattle WA at 6:10 pm
- Destination: FRO Friday Harbor WA
- Flight plan: IFR
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 20 statute miles
- Sky: clear
- Temperature: 81°F (27°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 3 |
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.
Other NTSB records under N1755U the same tail number, which may have belonged to a different aircraft at the time
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.