# NTSB Accident SEA98LA133
> **Beech 23** · 1998-07-13 · OAKVILLE, WA, USA · NONE
## Event
- **NTSB number:** SEA98LA133
- **Event ID:** 20001211X10714
- **Type:** Accident
- **Date:** 1998-07-13
- **Location:** OAKVILLE, WA, USA
- **Coordinates:** 46.830768, -123.28057
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 3
- **Total aboard:** 3
## Aircraft
- **Make:** Beech
- **Model:** 23
- **Registration:** N8719M
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Loss of power due to the failure of an exhaust valve, and overloading of the landing gear.  Factors include the failure of maintenance personnel to verify proper compliance with an Airworthiness Directive related to the exhaust valve, and soft terrain.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA98LA133) · AI Analytics · CC0 1.0*