# NTSB Accident ERA09LA502
> **M-SQUARED SPRINT 1000** · 2009-09-05 · Madeira Beach, FL, USA · FATL
## Event
- **NTSB number:** ERA09LA502
- **Event ID:** 20090908X11426
- **Type:** Accident
- **Date:** 2009-09-05
- **Location:** Madeira Beach, FL, USA
- **Coordinates:** 27.793056, -82.779441
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** M-SQUARED
- **Model:** SPRINT 1000
- **Registration:** N185SQ
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A loss of torque to the gearbox engine-side coupling flange bolts, which resulted in separation of the gearbox and propeller from the engine and the subsequent severing of the airplane's tail structure.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA09LA502) · AI Analytics · CC0 1.0*