# NTSB Accident SEA89FA099
> **CUSHING 4** · 1989-06-04 · MANSFIELD, WA, USA · FATL
## Event
- **NTSB number:** SEA89FA099
- **Event ID:** 20001213X28660
- **Type:** Accident
- **Date:** 1989-06-04
- **Location:** MANSFIELD, WA, USA
- **Coordinates:** 47.890098, -119.5009
## Injuries
- **Highest injury:** FATL
- **Fatal:** 2
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** CUSHING
- **Model:** 4
- **Registration:** N5321U
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FAILURE OF THE LEFT WING MAIN SPAR DUE TO OVERLOAD 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=SEA89FA099) · AI Analytics · CC0 1.0*