Let Blanik L-13 accident near Dansville, New York, April 19, 2008
On April 19, 2008 at about 8:00 pm local time, a Let Blanik L-13 (glider), registered N90870, was substantially damaged in an accident during landing near Dansville, New York (Dansville Municipal airport). It was an instructional 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).
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The NTSB's probable cause their words, unchanged
The pilot's failure to attain the proper glide path and the flight instructor's delayed remedial action. Contributing to the accident was the encountered headwind.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 19, 2008 · about 8:00 pm local time
- Place
- Dansville, New York · Dansville Municipal · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Let Blanik L-13 · all Blanik L-13s on the register
- Registration
- N90870 · no longer on the register · serial 025801
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The flight instructor was conducting a glider familiarization flight with the private pilot, who had not flown in a glider for about 3 years. The private pilot entered the traffic pattern for the grass landing area adjacent to runway 14. The flight instructor stated that the private pilot was "a little reluctant" to remove the dive brakes and that the instructor removed them while on final approach at 600 feet above ground level. He further stated that the glider encountered a wind gradient that substantially reduced the glider's glide ratio. The glider subsequently landed short of the desired touchdown point and the left wing struck a tree. The glider came to rest about 100 feet before the runway. The private pilot stated that she felt the glider was "too high" until she turned onto the final approach path and realized it was actually "too low." Winds reported at the airport about the time of the accident were from 140 degrees at 15 knots.
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
What happened, in order
- Landing area undershoot during landing defining event
- Collision during takeoff/land during landing
The NTSB's findings
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Descent/approach/glide path › Not attained/maintained
- cause Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
- cause Personnel issues › Action/decision › Action › Delayed action › Instructor/check pilot
- factor Environmental issues › Conditions/weather/phenomena › Wind › (general) › Effect on operation
Flight instructor
- Certificate: airline transport pilot, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: glider; instructor: instrument airplane; instrument: airplane; rotorcraft: glider
- Flight time: 7,679 hours in all; 100 in this make and model; 18 in the last 90 days; 12 in the last 30 days; 3,493 as pilot in command; 683 on instruments
- Last flight review: December 10, 2007
- Medical certificate: Class 1 (with waivers/limitations)
- Seat: rear
- Injury: no injuries
Pilot
- Certificate: private
- Ratings: rotorcraft: glider
- Flight time: 300 hours in all
- Medical certificate: None
- Seat: frt
- Injury: no injuries
The aircraft
- Airframe total time: 2,299 hours
- Last inspection: annual inspection, April 17, 2008
- Maximum gross weight: 1,100 lb
- Seats: 2
- Landing gear: fixed
The flight
- Departed from: DSV Dansville NY at 7:45 pm
- Destination: Dansville NY
- Flight plan: none
- Runway 14, 3,500 ft by 100 ft
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 140° at 15 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 84°F (29°C), dew point 36°F (2°C)
- Altimeter: 29.81 inHg
- Observation at 7:54 pm from DSV
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flig | 2 |
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 docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site 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 NYC08LA168.