# N420BA: Let L-23 SUPER BLANIK - Status: Valid registration - Airframe: [Let L-23 SUPER BLANIK](https://openairdocs.org/model/let-l-23-super-blanik) (registry code 1360308, 2 seats) - Data sheets: [TCDS G60EU](https://openairdocs.org/tcds/G60EU) (Blanik Aircraft CZ s.r.o.) (OpenAirDocs) - Serial number: 029007 - Type: Glider - Engine type: None - Certificate issued: December 5, 2012 - Expires: December 31, 2028 - Mode S code: A4FBB9 - Registered owner: [Civil Air Patrol](https://openairdocs.org/faa-owner/CIVIL%20AIR%20PATROL) - Location: [Maxwell Afb, AL](https://openairdocs.org/faa-place/AL/Maxwell%20Afb) - Owner type: Corporation - Owner's area on the map: 32.3809° N, 86.3637° W: Placed by OpenAirDocs at the center of ZIP code 36112, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=420BA - Page: https://openairdocs.org/aircraft/N420BA From the FAA registry file of October 24, 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): 5 in force ### Matched by airframe (Let L-23 SUPER BLANIK) - [AD 2020-16-05](https://openairdocs.org/ad/2020-16-05): Rudder Control System · Blanik Aircraft CZ s.r.o. L 23 Super - Blanik. Effective Aug 28, 2020 - [AD 2011-02-08](https://openairdocs.org/ad/2011-02-08): Stabilizers. · BLANIK L 23 Super - Blanik. Effective Feb 14, 2011 - [AD 2010-15-05](https://openairdocs.org/ad/2010-15-05): Stabilizers · BLANIK L 23 Super - Blanik. Effective Aug 30, 2010 - [AD 2008-26-12](https://openairdocs.org/ad/2008-26-12): Control bridge · BLANIK L 23 Super - Blanik. Effective Jan 28, 2009 - [AD 2004-25-17](https://openairdocs.org/ad/2004-25-17): Elevator rocker lever (part number A 730 201 N) · BLANIK L 23 Super - Blanik. Effective Jan 28, 2005 ### Historical (superseded or no longer in force) - [AD 2010-08-01](https://openairdocs.org/ad/2010-08-01) (historical): Stabilizers · Aircraft Industries a.s. L 23 Super - Blanik. Effective Apr 26, 2010 ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N420BA. ## FAA accident and incident reports None matched to N420BA. ## Service difficulty reports (12) As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR 2011FA0000078](https://openairdocs.org/sdr/2011FA0000078), Feb 10, 2011: CONTROL STICK. OBSTRUCTED. DURING A LANDING FLARE, THE PILOT NOTICED DIFFICULTY IN MOVING THE CONTROL STICK FORWARD. AFTER A POST FLIGHT INSP, IT WAS DISCOVERED THAT A BONDING STRAP SCREW - [SDR 2010FA0000646](https://openairdocs.org/sdr/2010FA0000646), Jun 28, 2010: CABLE. FRAYED. FRAYED RUDDER CABLES FOUND DURING 100 HR, 4 INSP. 330.9 SHOULD LAST 1000 HOURS IAW MFG MM. CHRONIC PROBLEM. - [SDR 2010FA0000139](https://openairdocs.org/sdr/2010FA0000139), Feb 8, 2010: HINGE BRACKET. CRACKED. RT UPPER FWD, DURING A 100 HOUR INSP, IT WAS DISCOVERED THAT THE INBD ELEVATOR HINGE BRACKET EXHIBITED SEVERAL CRACKS. ADDITIONAL CRACKS WERE FOUND ON THE NOTED - [SDR 2009FA0000781](https://openairdocs.org/sdr/2009FA0000781), Sep 9, 2009: RIVET. SHEARED. RIVET AT SPAR INTER-CONNECT, AFT BULKHEAD AT REAR PORTION OF BATTERY BOX, UPPER LT SIDE, STA 65 (APPROX), RIVET HEAD SHEARED. - [SDR 2009FA0000780](https://openairdocs.org/sdr/2009FA0000780), Sep 9, 2009: CONTROL CABLE. FRAYED. RUDDER CABLES FOUND FRAYED, LEFT AND RIGHT SIDE. CHRONIC PROBLEM. SHOULD LAST 1000 HOURS ACCORDING TO MFG., L/R CABLES FAILED AT 665.9 - [SDR D20060502](https://openairdocs.org/sdr/D20060502), May 2, 2006: LONGERON. CRACKED. FIRST LONGERON (N434BA) WAS FOUND CRACKED AT THE ELEVATOR TRIM GUIDE ATTACH POINT, NEAR THE RCP LH RUDDER PEDAL, DURING A SCHEDULED INSPECTION. SUBSEQUENT FINDI - [SDR DOSS102](https://openairdocs.org/sdr/DOSS102), May 2, 2006: LONGERON. CRACKED. FIRST LONGERON (N434BA) WAS FOUND CRACKED AT THE ELEVATOR TRIM GUIDE ATTACH POINT, NEAR THE RCP LT RUDDER PEDAL, DURING A SCHEDULED INSPECTION. SUBSEQUENT FINDI - [SDR DOSS002](https://openairdocs.org/sdr/DOSS002), May 2, 2006: LONGERON. CRACKED. FIRST LONGERON (N434BA) WAS FOUND CRACKED AT THE ELEVATOR TRIM GUIDE ATTACH POINT, NEAR THE RCP LH RUDDER PEDAL, DURING A SCHEDULED INSPECTION. SUBSEQUENT FINDI - [SDR DOSS02](https://openairdocs.org/sdr/DOSS02), May 2, 2006: LONGERON. CRACKED. FIRST LONGERON (N434BA) WAS FOUND CRACKED AT THE ELEVATOR TRIM GUIDE ATTACH POINT, NEAR THE RCP LT RUDDER PEDAL, DURING A SCHEDULED INSPECTION. SUBSEQUENT FINDI - [SDR 20060502D](https://openairdocs.org/sdr/20060502D), May 2, 2006: LONGERON. CRACKED. FIRST LONGERON (N434BA) WAS FOUND CRACKED AT THE ELEVATOR TRIM GUIDE ATTACH POINT, NEAR THE RCP LT RUDDER PEDAL, DURING A SCHEDULED INSPECTION. SUBSEQUENT FINDI - [SDR 2005FA0000876](https://openairdocs.org/sdr/2005FA0000876), Jun 21, 2005: CONTROL CABLE. FRAYED. LEFT AND RIGHT RUDDER CABLES FOUND FRAYED AT AFT PULLEYS. - [SDR 2003FA0001022](https://openairdocs.org/sdr/2003FA0001022), Oct 3, 2003: SPRING. BROKEN. PILOT REPORTED RELEASE HANDLE WOULD NOT RETRACT. MAINTENANCE FOUND UPON INSPECTION PART OF SPRING BROKEN. THREE ADDITIONAL SAILPLANES DEVELOPED THIS PROBLEM AT ## STCs that may be installed (OpenAirDocs) (2) 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 L-23 SUPER BLANIK) - [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 ## Earlier aircraft with N420BA The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N420BA before. - [Cancelled 1993-04-22](https://openairdocs.org/deregistered/N420BA-1993-04-22): Ashby Dale LANCAIR 320, S/N 266. Exported to Netherlands. Owner: [Redmond, OR](https://openairdocs.org/faa-place/OR/Redmond) ## Related - Other Let L-23 SUPER BLANIK aircraft: https://openairdocs.org/model/let-l-23-super-blanik/aircraft.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.