# NTSB investigations: Let BLANIK L-13: Undershoot 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 MIA05LA077](https://openairdocs.org/ntsb/MIA05LA077.md): Let Blanik L-13 · DeLand, FL · Accident · Serious injuries · Limited investigation · Final report · Mar 13, 2005 · N14420 · Substantial damage > The failure of the pilot to maintain sufficient airspeed during landing, resulting in an inadvertent stall, undershoot and collision with the ground. - [NTSB MIA00LA165](https://openairdocs.org/ntsb/MIA00LA165.md): Let L-13 · Pensacola, FL · Accident · No injuries · Limited investigation · Final report · May 22, 2000 · N90867 · Substantial damage > The student's failure to maintain the proper landing pattern altitude resulting in an undershoot during landing and collision with a fence. A factor in the accident was the pilot's failure to realize the spoilers were still deployed during the undershoot. - [NTSB FTW99LA243](https://openairdocs.org/ntsb/FTW99LA243.md): Let Blanik L-13 · Jonesboro, AR · Accident · Serious injuries · Limited investigation · Final report · Aug 30, 1999 · N3255Y · Substantial damage > The pilot's misjudgment of distance/altitude during the final approach to landing, resulting in an undershoot, and collision with a power line pole. - [NTSB MIA99LA193](https://openairdocs.org/ntsb/MIA99LA193.md): Let Blanik L-13 · Monroe, GA · Accident · No injuries · Limited investigation · Final report · Jul 10, 1999 · N90842 · Substantial damage > the pilot-in command's improper handling and inflight decisions resulting in an undershoot of the intended landing runway. The pilot-in-command then failed to maintain airspeed, which resulted in a stall and the right wingtip impacting the ground. - [NTSB MIA98LA023](https://openairdocs.org/ntsb/MIA98LA023.md): Let L-13 · Elkin, NC · Accident · No injuries · Limited investigation · Final report · Nov 1, 1997 · N65140 · Substantial damage > The instructor's pilot's misjudgment of altitude and distance, and his inadequate compensation for the wind conditions. Unfavorable winds and a fence were contributing factors. - [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 LAX96LA158](https://openairdocs.org/ntsb/LAX96LA158.md): Let Blanik L-13 · Jean, NV · Accident · No injuries · Limited investigation · Final report · Apr 6, 1996 · N65379 · Substantial damage > the pilot's poorly planned approach. The flight's encounter with a downdraft is a factor in this accident. - [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 SEA91LA147](https://openairdocs.org/ntsb/SEA91LA147.md): Let L-13 · Driggs, ID · Accident · No injuries · Limited investigation · Final report · Jul 1, 1991 · N711KR · Substantial damage > The pilot misjudged his distance and altitude to the runway during the approach and failed to attain the proper touchdown point for landing. His lack of experience in the make and model of glider was a related factor. - [NTSB CHI87LA002](https://openairdocs.org/ntsb/CHI87LA002.md): Let L-13 · White Bear Lake, MN · Accident · No injuries · Limited investigation · Final report · Oct 8, 1986 · N142AS · Substantial damage > The plt reported that he entered the traffic pattern for rwy 30 at aprx 900 ft and completed a right turn to base. The plt stated that while on base, he realized the aircraft was too high and deployed the spoilers halfway. As he turned to final, he stated… - [NTSB SEA86LA209](https://openairdocs.org/ntsb/SEA86LA209.md): Let L-13 · Issaquah, WA · Accident · No injuries · Limited investigation · Final report · Jul 24, 1986 · N65141 · Substantial damage > Plt undershot approach after encountering downdraft, collided with perimeter fence. - [NTSB MIA86LA166](https://openairdocs.org/ntsb/MIA86LA166.md): Let L-13 · Pensacola, FL · Accident · Minor injuries · Limited investigation · Final report · May 26, 1986 · N11TR · Substantial damage > The pvt glider plt with a total of 47 hours of flt time departed his local field with one passenger. At about 2000 ft AGL he disengaged the aero tow and proceeded to glide for about one hour. The plt stated that when he started back to his local airport and… - [NTSB ATL85LKG11](https://openairdocs.org/ntsb/ATL85LKG11.md): Let L-13 · Huntsville, AL · Accident · Minor injuries · Final report · Aug 24, 1985 · N99954 · Substantial damage > The commercial plt was in training for a glider rating & was on a supervised solo flt to practice a landing. During the traffic pattern, he rolled out hi on final & extended the spoilers to adjust to the desired glide path, then retracted the spoilers to the… - [NTSB ATL85FMG06](https://openairdocs.org/ntsb/ATL85FMG06.md): Let L-13 · Chester, SC · Accident · No injuries · Final report · Aug 20, 1985 · N96AS · Substantial damage > The glider landed about 150 ft short of the rwy on the plts 1st solo in this acft. He said he noticed a rapid drop in alt at 55 mph on final approach and began to change spoiler position to compensate. He complained that the stiffness of the operation of the… - [NTSB MIA85LA030](https://openairdocs.org/ntsb/MIA85LA030.md): Let L-13 · Homestead, FL · Accident · No injuries · Limited investigation · Final report · Nov 10, 1984 · N8208 · Substantial damage > According to the plt, a downdraft was encountered on base leg causing the acft to descend and decelerate. Unable to reach the rwy the glider landed in an orchard. - [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 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 ATL83LA226](https://openairdocs.org/ntsb/ATL83LA226.md): Let L-13 · Warrenton, VA · Accident · No injuries · Limited investigation · Final report · Jun 10, 1983 · N90626 · Substantial damage > The pilot stated that this was his third flt of the day and his first in this particular acft. He misjudged his glide path and landed about 100 feet short of the runway. The glider rolled into the creek and the nose impacted about 2 feet below the top of the… - [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… ## 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" = 390)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=1360306&occurrence=390 --- 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.