# NTSB Accident CEN13FA038
> **PIAGGIO P180** · 2012-10-31 · Boyne City, MI, USA · NONE
## Event
- **NTSB number:** CEN13FA038
- **Event ID:** 20121031X31551
- **Type:** Accident
- **Date:** 2012-10-31
- **Location:** Boyne City, MI, USA
- **Coordinates:** 45.208889, -84.989997
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** PIAGGIO
- **Model:** P180
- **Registration:** N401WS
- **FAR Part:** 091
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** IMC
## Probable cause

The select/bypass valve's failure to seal correctly because of improper shimming, which resulted in an uncommanded and uncontrollable left turn during landing. Contributing to the accident was the overhaul facility's improper overhaul of the steering manifold.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=CEN13FA038) · AI Analytics · CC0 1.0*