Let L-13 accident near Driggs, Idaho, July 1, 1991
On July 1, 1991 at about 10:00 pm local time, a Let L-13 (glider), registered N711KR, was substantially damaged in an accident near Driggs, Idaho (Teton Peaks airport). It was an instructional 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).
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The NTSB's probable cause their words, unchanged
THE PILOT MISJUDGED HIS DISTANCE AND ALTITUDE TO THE RUNWAY DURING THE APPROACH AND FAILED TO ATTAIN THE PROPER TOUCHDOWN POINT FOR LANDING. HIS LACK OF EXPERIENCE IN THE MAKE AND MODEL OF GLIDER WAS A RELATED FACTOR.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 1, 1991 · about 10:00 pm local time
- Place
- Driggs, Idaho · Teton Peaks · 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
- N711KR · registry record · serial 175127
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
DURING A SOLO INSTRUCTIONAL FLIGHT, THE PILOT ALLOWED THE GLIDER TO GET LOW ON FINAL APPROACH. UNABLE TO REACH THE AIRPORT, HE LANDED THE GLIDER SHORT OF THE RUNWAY. DURING THE LANDING ROLL, IT COLLIDED WITH THE AIRPORT BOUNDARY 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: single-engine land
- Flight time: 294 hours in all; 5 in this make and model; 27 in the last 90 days; 19 in the last 30 days; 218 as pilot in command
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: unk
The aircraft
- Last inspection: inspection type not recorded; 0 hours since
- Maximum gross weight: 1,102 lb
- Seats: 2
- Landing gear: fixed
- Engine: (type not recorded); 0 hours total
The flight
- Flight plan: none
- Runway 21, 5,200 ft by 75 ft
Weather at the time
- Light: daylight
- Visibility: 30 statute miles
- Sky: clear
- Temperature: 81°F (27°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.
Other NTSB records under N711KR the same tail number, which may have belonged to a different aircraft at the time
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number SEA91LA147.