# NTSB Accident CEN21LA346
> **HpH, Spol. S.R.O. Glasflügel 304S** · 2021-07-30 · Briggs, TX, USA · SERS
## Event
- **NTSB number:** CEN21LA346
- **Event ID:** 20210801103600
- **Type:** Accident
- **Date:** 2021-07-30
- **Location:** Briggs, TX, USA
- **Coordinates:** 30.856293, -97.945853
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** HpH, Spol. S.R.O.
- **Model:** Glasflügel 304S
- **Registration:** N304AB
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The overstress fracture of the elevator control tube due to reduced wall thickness from water intrusion and subsequent corrosion. Contributing to the accident was the lack of a drain hole at the bottom of the elevator control tube, which allowed the tube to collect water, and the mechanic’s inadequate inspection of the elevator control system during the recent condition inspection.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN21LA346) · AI Analytics · CC0 1.0*