# NTSB investigations: Let BLANIK L-13: In flight collision with terrain/water

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB CHI06CA252](https://openairdocs.org/ntsb/CHI06CA252.md): Let Blanik L-13 · Hampshire, IL · Accident · No injuries · Data collection · Final report · Sep 2, 2006 · N12YA · Substantial damage
  > The pilot's inadequate approach for landing and his failure to attain a proper descent rate.
- [NTSB DEN04CA085](https://openairdocs.org/ntsb/DEN04CA085.md): Let Blanik L-13 · Durango, CO · Accident · Serious injuries · Data collection · Final report · Jun 3, 2004 · N99860 · Substantial damage
  > the pilot's improper in-flight planning and decision and his failure to maintain adequate terrain clearance. Contributing to the accident was the lack of suitable terrain, and the low approach.
- [NTSB DEN03LA001](https://openairdocs.org/ntsb/DEN03LA001.md): Let Blanik L-13 · Morgan, UT · Accident · Serious injuries · Limited investigation · Final report · Oct 3, 2002 · N99805 · Destroyed
  > the pilot's inadequate inflight planning and decision which resulted in an unsuitable off-field landing site. A contributing factor was downdraft weather conditions.
- [NTSB MIA99LA227](https://openairdocs.org/ntsb/MIA99LA227.md): Let Blanik L-13 · Perry, SC · Accident · No injuries · Limited investigation · Final report · Aug 17, 1999 · N7529 · Substantial damage
  > an in-flight collision with the ground due to inadequate liftoff airspeed, and the pilot's improper use of flaps, which resulted in too low of an altitude to sustain flight.
- [NTSB FTW97LA256](https://openairdocs.org/ntsb/FTW97LA256.md): Let Blanik L-13 · Pagosa Springs, CO · Accident · Minor injuries · Limited investigation · Final report · Jul 4, 1997 · N65378 · Substantial damage
  > The pilot's improper inflight planning in that he allowed the glider to descend to too low an altitude and stray too far from the airport, exceeding the aircraft's glide capabilities. A factor was his failure to utilize maximum braking action.
- [NTSB LAX82DVG32](https://openairdocs.org/ntsb/LAX82DVG32.md): Blanik L-13 · Chico, CA · Accident · Serious injuries · Final report · Aug 28, 1982 · N66JP · Substantial damage
  > The glider pilot reported that after he disengaged from the aerial tow, he was unable to find any of the expected conditions of lift. As altitude was lost, he elected to land in a vineyard. During the landing, the glider was damaged and the pilot received a…
- [NTSB SEA82DA092](https://openairdocs.org/ntsb/SEA82DA092.md): Blanik L-13 · Driggs, ID · Accident · No injuries · Final report · Jun 18, 1982 · N99954 · Substantial damage
  > The pilot held a commercial, airline transport certificate, but had only a student glider certificate. During a towed takeoff, witnesses observed the spoilers extend after about 200 ft of ground roll. The tow pilot gave an arm signal to indicate a problem.…

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1360306')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 230))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1360306&occurrence=230

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