# N52AS: 1977 Let BLANIK L-13 - Status: Valid registration - Airframe: [Let BLANIK L-13](https://openairdocs.org/model/let-blanik-l-13) (registry code 1360306, 2 seats) - Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000) - Data sheets: [TCDS G24EU](https://openairdocs.org/tcds/G24EU) (Blanik Aircraft CZ s.r.o.) (OpenAirDocs) - Serial number: 027056 - Year built: 1977 - Type: Glider - Engine type: None - Airworthiness: Standard, glider - Airworthiness date: August 1, 1978 - Certificate issued: October 23, 2001 - Expires: October 31, 2028 - Mode S code: A686A6 - Registered owner: [Cascade Soaring Society](https://openairdocs.org/faa-owner/CASCADE%20SOARING%20SOCIETY) - Location: [East Wenatchee, WA](https://openairdocs.org/faa-place/WA/East%20Wenatchee) - Owner type: Corporation - Owner's area on the map: 47.4919° N, 120.1637° W: Placed by OpenAirDocs at the center of ZIP code 98802, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=52AS - Page: https://openairdocs.org/aircraft/N52AS From the FAA registry file of October 22, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. ## ADs that may apply (OpenAirDocs): 7 in force ### Matched by airframe (Let BLANIK L-13) - [AD 2016-11-13](https://openairdocs.org/ad/2016-11-13): Flight Controls · BLANIK Blanik L-13 and Blanik L-13 AC. Effective Jul 14, 2016 - [AD 2016-11-10](https://openairdocs.org/ad/2016-11-10): Fuselage · BLANIK Blanik L-13 and Blanik L-13 AC. Effective Jul 8, 2016 - [AD 2010-18-05](https://openairdocs.org/ad/2010-18-05): Wings · BLANIK Blanik L-13. Effective Aug 30, 2010 - [AD 2007-25-01](https://openairdocs.org/ad/2007-25-01): forward and aft control sticks · BLANIK Blanik L-13. Effective Jan 7, 2008 - [AD 78-23-14 R1](https://openairdocs.org/ad/78-23-14-R1): Tow Release System · BLANIK Blanik L-13 and Blanik L-13 AC. Effective Aug 17, 1984 - [AD 80-16-03](https://openairdocs.org/ad/80-16-03): Horizontal Stabilizer · BLANIK Blanik L-13 and Blanik L-13 AC. Effective Aug 11, 1980 - [AD 77-15-05](https://openairdocs.org/ad/77-15-05): Fin Top Ribs · BLANIK Blanik L-13 and Blanik L-13 AC. Effective Aug 4, 1977 ### Matched by engine (NONE) None in force. ### Historical (superseded or no longer in force) - [AD 2010-14-15](https://openairdocs.org/ad/2010-14-15) (historical): Wings · Aircraft Industries a.s. Blanik L-13. Effective Jul 19, 2010 - [AD 2000-20-11](https://openairdocs.org/ad/2000-20-11) (historical): Tail-fuselage Hinge · Aircraft Industries a.s. Blanik L-13. Effective Nov 27, 2000 - [AD 99-19-33](https://openairdocs.org/ad/99-19-33) (historical): Elevator Drive Bellcrank · Aircraft Industries a.s. Blanik L-13. Effective Nov 8, 1999 ## Information bulletins (advisory) None matched. ## NTSB investigations (2) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB SEA97LA194](https://openairdocs.org/ntsb/SEA97LA194), Aug 19, 1997: Let Blanik L-13 (N52AS), Hamilton, MT, substantial damage. Probable cause: The pilot's excessive speed taxispeed and failure to maintain wing clearance from a taxiway sign. - [NTSB SEA93LA216](https://openairdocs.org/ntsb/SEA93LA216), Sep 26, 1993: Let Blanik L-13 (N52AS), Clinton, MT, substantial damage. Probable cause: TOTAL FAILURE OF THE TOW EQUIPMENT. ## FAA accident and incident reports (2) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 19970819023189A](https://openairdocs.org/incident/19970819023189A), Aug 19, 1997: Let L13BLANIK (N52AS), Hamilton, MT, Substantial damage. Sailplane struck a taxiway sign while turning off the runway at a high speed. (.4)eyewitnesses observed the glider turn off the runway at an excessive speed… - [Accident 19930926037719A](https://openairdocs.org/incident/19930926037719A), Sep 26, 1993: Let L13BLANIK (N52AS), Clinton, MT, Substantial damage. Tow rope broke second time. Tow plane aborted. Landed on tow rope causing glider to veer off runway. Hit border cone ## Service difficulty reports None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. ## STCs that may be installed (OpenAirDocs) (4) Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do. ### Approved for the airframe (Let BLANIK L-13) - [STC SG03715NY](https://openairdocs.org/stc/SG03715NY): Iunstallation and maintenance of Oratex 6000 Covering and Coating System. Lanitz-Prena Folien Factory GmbH - [STC SG04702NY](https://openairdocs.org/stc/SG04702NY): Installation and maintenance of Oratex UL600 Covering and Coating System. Lanitz-Prena Folien Factory GmbH - [STC SA8075SW](https://openairdocs.org/stc/SA8075SW): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER). Razorback Fabrics Inc - [STC SA1351WE](https://openairdocs.org/stc/SA1351WE): Replace existing fabric on wings, fuselage, empennage, and/or control surfaces, with Ceconite101 material. (262A Series -12). Ceconite Inc ## Related - Other Let BLANIK L-13 aircraft: https://openairdocs.org/model/let-blanik-l-13/aircraft.md - The NONE engine: https://openairdocs.org/engine/none.md --- 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.