# NTSB investigations: Let BLANIK L-13, MI

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 CHI01LA277](https://openairdocs.org/ntsb/CHI01LA277.md): Blanik L-13 · Marlette, MI · Accident · Serious injuries · Limited investigation · Final report · Aug 4, 2001 · N9297Z · Minor damage
  > Ground crew personnel improperly connected the tow winch cable prior to takeoff which resulted in one side of the winch cable coming disconnected. Factors associated with the accident were the ditch and the tree branch which the airplane contacted.
- [NTSB CHI91LA231](https://openairdocs.org/ntsb/CHI91LA231.md): Let L-13 · Gregory, MI · Accident · No injuries · Limited investigation · Final report · Jul 26, 1991 · N781BA · Substantial damage
  > A collision with wires after the glider overshot the landing area due to inadvertent lowering of the flaps and no use of spoilers.
- [NTSB CHI90LA140](https://openairdocs.org/ntsb/CHI90LA140.md): Let L-13 · Oxford, MI · Accident · No injuries · Limited investigation · Final report · May 26, 1990 · N9297Z · Substantial damage
  > The glider pilot's failure to maintain adequate aircraft control during the touchdown and landing roll. The poorly executed approach to landing, and rough/uneven terrain were contributing factors in this accident.
- [NTSB CHI86LA133](https://openairdocs.org/ntsb/CHI86LA133.md): Let L-13 · Gregory, MI · Accident · No injuries · Limited investigation · Final report · Apr 27, 1986 · N30LH · Substantial damage
  > The pilot stated that during landing the right wing of the glider touched the ground causing a right turn. The left wing then caught on a truck tire causing a 70 degree turn to the left. The glider was stopped when the right wing struck a barn. He was later…
- [NTSB CHI85LA247](https://openairdocs.org/ntsb/CHI85LA247.md): Let L-13 · Gregory, MI · Accident · No injuries · Limited investigation · Final report · Jun 23, 1985 · N14420 · Substantial damage
  > The glider landed in trees after the spoiler 'popped' open in flt during a towed takeoff. The tow plane released the glider at 300 ft AGL after the spoilers opened. The plt landed without retracting the spoilers. Two FAA inspectors stated that they checked…
- [NTSB CHI84LA409](https://openairdocs.org/ntsb/CHI84LA409.md): Let L-13 · Gregory, MI · Accident · No injuries · Limited investigation · Final report · Sep 29, 1984 · N14420 · Substantial damage
  > According to the CFI the glider was at about 500 ft AGL on base leg when a downdraft caused the acft to descend and touch down 50 ft short of the rwy.
- [NTSB CHI81DEC41](https://openairdocs.org/ntsb/CHI81DEC41.md): Blanik L-13 · Oxford, MI · Accident · Minor injuries · Closed · Aug 19, 1981 · N3462 · Substantial 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" = 'MI' 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=MI

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.