# NTSB investigations: Let BLANIK L-13, TX

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 FTW98LA264](https://openairdocs.org/ntsb/FTW98LA264.md): Let Blanik L-13 · Hempstead, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 14, 1998 · N73534 · Substantial damage
  > The pilot's failure to maintain the proper rate of descent. Factor were the pilot's inadvertent lowering of the flaps instead of extending the spoilers, and his lack of experience in gliders.
- [NTSB FTW87LA199](https://openairdocs.org/ntsb/FTW87LA199.md): Let L-13 · Littlefield, TX · Accident · No injuries · Limited investigation · Final report · Aug 16, 1987 · N9997Q · Substantial damage
  > The pilot activated the flaps while on final approach instead of the spoilers. When the glider did not descend as he expected, a left 360 degree turn was initiated to lose altitude. The pilot stated that he then unintentionally stalled the aircraft while in…
- [NTSB FTW87LA186](https://openairdocs.org/ntsb/FTW87LA186.md): Let L-13 · Hempstead, TX · Accident · No injuries · Limited investigation · Final report · Aug 2, 1987 · N78AS · Substantial damage
  > Acft landed short of threshold following a low release shortly after t/o. release was low due to tow plane's being unable to climb above 200' AGL due to the glider's spoilers being deployed inadvertently during the t/o. the plt stated that he executed a 270…
- [NTSB FTW79FRA09](https://openairdocs.org/ntsb/FTW79FRA09.md): Blanik L-13 · Cypress, TX · Accident · Serious injuries · Closed · Mar 18, 1979 · N100GH · Destroyed
- [NTSB FTW79DRA01](https://openairdocs.org/ntsb/FTW79DRA01.md): Let-Np-K L-13 · Cypress, TX · Accident · No injuries · Closed · Oct 22, 1978 · N84AS · Substantial damage
- [NTSB FTW73AF016](https://openairdocs.org/ntsb/FTW73AF016.md): Piper PA-18 · Friendswood, TX · Accident · No injuries · Closed · Nov 5, 1972 · N4612Y · 2 aircraft · Minor damage

## 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."eventStateOrRegion" = 'TX' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('1360306'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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

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