Let L-13 accident near Issaquah, Washington, July 24, 1986
On July 24, 1986 at about 10:30 pm local time, a Let L-13 (glider), registered N65141, was substantially damaged in an accident near Issaquah, Washington (Skyport airport). It was a personal flight under general aviation rules (Part 91). 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
- July 24, 1986 · about 10:30 pm local time
- Place
- Issaquah, Washington · Skyport · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Let L-13 · all L-13s on the register
- Registration
- N65141 · registry record · serial 26408
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
PLT UNDERSHOT APPROACH AFTER ENCOUNTERING DOWNDRAFT, COLLIDED WITH PERIMETER FENCE.
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: rotorcraft: glider
- Flight time: 365 hours in all; 13 in this make and model
- Medical certificate: None
- Seat: frt
The aircraft
- Last inspection: annual inspection
- Maximum gross weight: 1,100 lb
- Seats: 2
- Landing gear: fixed
- Engine: None NONE (type not recorded); 0 hours total
The flight
- Flight plan: none
- Runway 36, 1,800 ft by 50 ft
Weather at the time
- Light: daylight
- Wind: from 335° at 7 knots
- Visibility: 12 statute miles
- Sky: scat at 4,000 ft
- Temperature: 75°F (24°C), dew point 0°F (-18°C)
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.