# NTSB Accident FTW89FA013
> **AEROSPATIALE AS-355F-1** · 1988-11-04 · W. CAMERON 617 · FATL
## Event
- **NTSB number:** FTW89FA013
- **Event ID:** 20001213X27246
- **Type:** Accident
- **Date:** 1988-11-04
- **Location:** W. CAMERON 617
## Injuries
- **Highest injury:** FATL
- **Fatal:** 4
- **Serious:** 2
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 6
## Aircraft
- **Make:** AEROSPATIALE
- **Model:** AS-355F-1
- **Registration:** N355EH
- **FAR Part:** 135
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE LOSS OF CONTROL OF THE AIRCRAFT WHICH OCCURRED WHEN THE TAIL ROTOR DRIVE SHAFT EXPERIENCED A FATIGUE INDUCED MATERIAL FAILURE AND TAIL ROTOR THRUST WAS LOST. EVIDENCE INDICATED THAT THE SHAFT WAS UNDER DESIGNED FOR THE LOADS THAT WERE ENCOUNTERED DURING NORMAL OPERATIONS.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=FTW89FA013) · AI Analytics · CC0 1.0*