# NTSB Accident WPR12LA275
> **DEHAVILLAND TIGER MOTH DH 82A** · 2012-06-24 · Fontana, CA, USA · NONE
## Event
- **NTSB number:** WPR12LA275
- **Event ID:** 20120625X15334
- **Type:** Accident
- **Date:** 2012-06-24
- **Location:** Fontana, CA, USA
- **Coordinates:** 34.049167, -117.465278
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** DEHAVILLAND
- **Model:** TIGER MOTH DH 82A
- **Registration:** N523R
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Partial loss of engine power during cruise flight due to a failed engine cylinder rocker assembly clamping bolt. Contributing to the accident was the failure of unknown maintenance personnel to perform a modification to the assembly that would have prevented the failure.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=WPR12LA275) · AI Analytics · CC0 1.0*