# NTSB Accident ERA09LA051
> **ROBINSON HELICOPTER R44** · 2008-11-12 · San Juan, PR, USA · SERS
## Event
- **NTSB number:** ERA09LA051
- **Event ID:** 20081112X70016
- **Type:** Accident
- **Date:** 2008-11-12
- **Location:** San Juan, PR, USA
- **Coordinates:** 18.453887, -66.092224
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** ROBINSON HELICOPTER
- **Model:** R44
- **Registration:** N452JM
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The detachment of the forward left servo control tube upper rod end attachment bolt during a hover due to separation of its retaining nut for undetermined reasons.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA09LA051) · AI Analytics · CC0 1.0*