# NTSB Accident WPR15FA268
> **CESSNA 150F** · 2015-09-28 · Port Townsend, WA, USA · SERS
## Event
- **NTSB number:** WPR15FA268
- **Event ID:** 20150928X72825
- **Type:** Accident
- **Date:** 2015-09-28
- **Location:** Port Townsend, WA, USA
- **Coordinates:** 48.065277, -122.840553
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** CESSNA
- **Model:** 150F
- **Registration:** N8529G
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The loss of engine power due to the mechanic's inadequate tightening of the crankshaft gear retaining bolts during an engine overhaul, which resulted in fatigue failure of the bolts and the crankshaft gear dowel pin that allowed the crankshaft gear to separate from the crankshaft.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR15FA268) · AI Analytics · CC0 1.0*