# NTSB Accident ATL89FA130
> **BELL UH-1E** · 1989-04-17 · AIKEN, SC, USA · SERS
## Event
- **NTSB number:** ATL89FA130
- **Event ID:** 20001213X28022
- **Type:** Accident
- **Date:** 1989-04-17
- **Location:** AIKEN, SC, USA
- **Coordinates:** 33.539249, -81.7191
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** BELL
- **Model:** UH-1E
- **Registration:** N118HS
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

IMPROPER INSTALLATION OF A TAIL ROTOR PITCH CHANGE CROSSHEAD RETENTION BOLT BY THE COMPANY MECHANIC, WHICH RESULTED IN LOOSENING OF THE BOLT AND EVENTUAL FAILURE OF THE TAIL ROTOR ASSEMBLY/BLADE AND SUBSEQUENT LOSS OF CONTROL.  TREES AT THE CRASH SITE CONTRIBUTED TO HELICOPTER DAMAGE.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ATL89FA130) · AI Analytics · CC0 1.0*