# NTSB Accident ERA09LA409
> **CESSNA 170B** · 2009-07-19 · Mahwah, NJ, USA · SERS
## Event
- **NTSB number:** ERA09LA409
- **Event ID:** 20090719X22537
- **Type:** Accident
- **Date:** 2009-07-19
- **Location:** Mahwah, NJ, USA
- **Coordinates:** 41.108333, -74.16333
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** CESSNA
- **Model:** 170B
- **Registration:** N8339A
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A loss of engine power due to the failure of the No. 1 cylinder thru bolt hold down nuts due to corrosion.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ERA09LA409) · AI Analytics · CC0 1.0*