# NTSB Accident SEA89LA130
> **CUSHING C2** · 1989-07-09 · JOHN DAY, OR, USA · SERS
## Event
- **NTSB number:** SEA89LA130
- **Event ID:** 20001213X28977
- **Type:** Accident
- **Date:** 1989-07-09
- **Location:** JOHN DAY, OR, USA
- **Coordinates:** 44.419197, -118.940597
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** CUSHING
- **Model:** C2
- **Registration:** N129C
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE PILOT IMPROPERLY CHANGED THE DESIGN OF THE AIRPLANE BY ELONGATING HOLES AT THE WING ATTACHMENT. THE CHANGE WAS NOT INSPECTED BY A QUALIFIED INDIVIDUAL. AS A RESULT OF THE CHANGE, THE WING SEPARATED AT THE SPAR.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA89LA130) · AI Analytics · CC0 1.0*