# NTSB Accident CEN23LA254
> **LET L-23 SUPER BLANIK** · 2023-06-21 · Gregory, MI, USA · SERS
## Event
- **NTSB number:** CEN23LA254
- **Event ID:** 20230623192425
- **Type:** Accident
- **Date:** 2023-06-21
- **Location:** Gregory, MI, USA
- **Coordinates:** 42.44208, -84.06436
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** LET
- **Model:** L-23 SUPER BLANIK
- **Registration:** N10BR
- **FAR Part:** 091
- **Engines:** 0
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## 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.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN23LA254) · AI Analytics · CC0 1.0*