# NTSB investigations: Let BLANIK L-13, CA 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 WPR10CA015](https://openairdocs.org/ntsb/WPR10CA015.md): Let Blanik L-13 · Llano, CA · Accident · Serious injuries · Data collection · Final report · Oct 11, 2009 · N948LC · Substantial damage > The student pilot's improper use of the airbrakes while on approach for landing. - [NTSB LAX08CA003](https://openairdocs.org/ntsb/LAX08CA003.md): Let Blanik L-13 · Hemet, CA · Accident · No injuries · Data collection · Final report · Oct 6, 2007 · N510CS · Substantial damage > The pilot's failure to maintain a proper descent rate due to his failure to close the air brake and/or partially retract the flaps during an encounter with lost lift on final approach. - [NTSB SEA07LA101](https://openairdocs.org/ntsb/SEA07LA101.md): Let Blanik L-13 · Llano, CA · Accident · No injuries · Limited investigation · Final report · Apr 13, 2007 · N101JJ · 2 aircraft · Substantial damage > The failure of the other pilot to maintain directional control during landing roll. - [NTSB LAX99LA228](https://openairdocs.org/ntsb/LAX99LA228.md): Let Blanik L-13 · Barstow, CA · Accident · No injuries · Limited investigation · Final report · Jun 19, 1999 · N136AS · Substantial damage > The loss of thermal lift that resulted in a forced landing and the pilot's improper glide path that resulted in a collision with a light pole. - [NTSB LAX97LA165](https://openairdocs.org/ntsb/LAX97LA165.md): Let Blanik L-13 · Hemet, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 19, 1997 · N90620 · Substantial damage > the pilot's failure to adjust his traffic pattern to compensate for local atmospheric conditions. - [NTSB LAX91LA349](https://openairdocs.org/ntsb/LAX91LA349.md): Let L-13 · Byron, CA · Accident · No injuries · Limited investigation · Final report · Aug 4, 1991 · N53AS · Substantial damage > The on ground collision with a hidden ditch not visible to the pilot during the landing roll out phase of a forced landing. - [NTSB LAX89LA145](https://openairdocs.org/ntsb/LAX89LA145.md): Let L-13 · Hemet, CA · Accident · No injuries · Limited investigation · Final report · Apr 1, 1989 · N82756 · Substantial damage > Inadequate crew coordination between the ground lineman and the blanik pilot, and failure of the blanik pilot to maintain clearance between his aircraft and the parked glider. A factor related to the accident was the proximity of the parked glider to the… - [NTSB LAX89LA027](https://openairdocs.org/ntsb/LAX89LA027.md): Let L-13 · Marana, CA · Accident · 1 fatal · Limited investigation · Final report · Oct 29, 1988 · N90848 · Substantial damage > The pilot reported that shortly after liftoff from runway 26 the control stick became difficult to move. He decided to continue the air tow and release at 200 feet AGL after release, the pilot turned the glider to return to the runway to land. He was still… - [NTSB LAX84LA386](https://openairdocs.org/ntsb/LAX84LA386.md): Let L-13 · Llano, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 9, 1984 · N99966 · Substantial damage > According to the plt, the glider did not sink as fast as expected on the downwind leg, so he extended flaps to 30 to 40 deg, used spoilers & extended the downwind. On base leg he entered an area of high sink; therefore, he closed the spoilers & angled toward… - [NTSB LAX84LA091](https://openairdocs.org/ntsb/LAX84LA091.md): Let L-13 · Jacumba, CA · Accident · No injuries · Limited investigation · Final report · Dec 3, 1983 · N711KR · Substantial damage > The acft collided with a bush and groundlooped short of the rwy. The wind was unusually strong and the glider plt stated he misjudged its effect and should have flown the base leg closer. The acft landed short of the rwy and ground looped. - [NTSB LAX83LA234](https://openairdocs.org/ntsb/LAX83LA234.md): Let L-13 · California City, CA · Accident · No injuries · Limited investigation · Final report · Apr 2, 1983 · N99965 · Substantial damage > During flt, the glider sustained in-flt structural damage while maneuvering at an altitude of aprx 17,500 ft MSL in the vicinity of California City, CA. During a preliminary verbal statement to an FAA inspector, the plt stated that he had done a couple of… - [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 LAX82DA254](https://openairdocs.org/ntsb/LAX82DA254.md): Blanik L-13 · Murrieta, CA · Accident · No injuries · Final report · Jul 11, 1982 · N90639 · Substantial damage > Pilot landed short of runway in a glider and impacted the ground at high speed with high sink rate. He had released early from an aerotow and descended at high airspeed with dive brakes open which accelerated his rate of sink. He was not injured in the… - [NTSB LAX81FVD19](https://openairdocs.org/ntsb/LAX81FVD19.md): Blanik L-13 · Fremont, CA · Accident · Minor injuries · Closed · Apr 12, 1981 · N53AS · Substantial damage - [NTSB LAX80FUG49](https://openairdocs.org/ntsb/LAX80FUG49.md): Blanik L-13 · Adelanto, CA · Accident · Minor injuries · Closed · Jul 26, 1980 · N3465 · Substantial damage - [NTSB LAX78DUM18](https://openairdocs.org/ntsb/LAX78DUM18.md): Blanik L-13 · San Diego, CA · Accident · No injuries · Closed · Apr 7, 1978 · N125DW · Substantial damage - [NTSB OAK78DVD25](https://openairdocs.org/ntsb/OAK78DVD25.md): Blanik L13 · Fremont, CA · Accident · Serious injuries · Closed · Apr 2, 1978 · N99861 · Substantial damage - [NTSB LAX78FUG03](https://openairdocs.org/ntsb/LAX78FUG03.md): Let-Np-K L-13 · Perris, CA · Accident · No injuries · Closed · Oct 14, 1977 · N99963 · Substantial damage - [NTSB LAX76DUQ30](https://openairdocs.org/ntsb/LAX76DUQ30.md): Let-Np-K L-13 · California Cty, CA · Accident · No injuries · Closed · Feb 28, 1976 · N3463 · Substantial damage - [NTSB OAK73DVG09](https://openairdocs.org/ntsb/OAK73DVG09.md): Blanik L-13 · Angwin, CA · Accident · No injuries · Closed · Aug 5, 1972 · N3457 · Substantial damage - [NTSB OAK72FVD52](https://openairdocs.org/ntsb/OAK72FVD52.md): Blanik L-13 · Fremont, CA · Accident · Serious injuries · Closed · Jun 12, 1972 · N3464 · Destroyed - [NTSB LAX72DUG19](https://openairdocs.org/ntsb/LAX72DUG19.md): Blanik L-13 · San Jacinto, CA · Accident · No injuries · Closed · Oct 1, 1971 · N11PX · 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" = 'CA' 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=CA --- 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.