# Accident 20230621008479A: Let L-23 SUPER BLANIK, Gregory, MI, June 21, 2023

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 21, 2023, 15:34 local time
- Place: Gregory, MI
- Damage: Substantial damage
- Phase of flight: Other, Specify
- Operating rules: General operating rules (Part 91)
- Location: 42.4421° N, 84.0644° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=42.4421&lon=-84.0644&mi=10
- Aircraft: N10BR, registered now (https://openairdocs.org/aircraft/N10BR) (OpenAirDocs)
- Registry model: Let L-23 SUPER BLANIK (registry code 1360308, https://openairdocs.org/model/let-l-23-super-blanik) (OpenAirDocs)
- Registry engine: NONE (registry code 00000, https://openairdocs.org/engine/none) (OpenAirDocs)
- Reported make and model: LET L-23 SUPER BLANIK
- Reported engine: NONE NONE
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 2
- Pilot certificates: Airline transport, commercial pilot, flight instructor
- Pilot flight hours: 24,792 total, 129 in this make and model, 41 in the last 90 days
- NTSB investigation: [NTSB CEN23LA254](https://openairdocs.org/ntsb/CEN23LA254) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20230621008479A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

CFI TOOK CONTROLS FROM STUDENT PILOT TO FIND THERMALS. CFI MADE DECISION TO DO OFF FIELD LANDING.

GLIDER CAME TO REST IN BEAN FIELD APPROXIMATELY HALF WAY UP 30’ HILL. NO ROLL MARKS WERE OBSERVED. NOSE DIRECTLY IMPACTED HILLSIDE, LEFT WING PARTIALLY SHEARED AT AILERON MID POINT. LEFT AILERON STAYED ATTACHED AT INBOARD ATTACH POINT. LEFT WING TIP IMPACTED LEFT WING LEADING EDGE AS DENOTED BY LEADING EDGE DENT AND RED PAINT MARKER FROM WING TIP. LEFT ELEVATOR TRIM TAB DETACCHED AT OUTBOARD ATTACH POINT. RIGHT WING AND RIGHT AILERON BULKED AT AILERON MID POINT. EMPANGE PARTIALLY SHEARED BEHIND RIGHT FLAP TRAILING EDGE. EMPANGE BUKLED APPROXIMATELY 2 FEET AFT OF SHEAR PIONT. RUDDER MIXER BRACKET BROKEN AT LOWER ATTACH POINT. RUDDER CABLES INTACT. AIR BRAKES DEPLOYED. CANOPYS WERE NOT JETISONED, EMERGENCY JETISON HANDLES WERE SAFETIED. FORWARD AND AFT CANOPYS WERE BLOWN OUT, FORWARD ON RIGHTSIDE AND AFT CANOPY ON LEFTSIDE.

## The NTSB's investigation of this event (1)

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 CEN23LA254](https://openairdocs.org/ntsb/CEN23LA254), Jun 21, 2023: Let L-23 Super Blanik (N10BR), Gregory, MI, substantial damage. Probable cause: The flight instructor’s failure to maintain adequate airspeed and his exceedance of the glider’s critical angle of attack, leading to an aerodynamic stall during the off-field landing.

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. For accidents, the NTSB's own investigation is the fuller record.

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