# NTSB Accident DEN99LA015
> **Mooney M20C** · 1998-10-21 · ENGLEWOOD, CO, USA · SERS
## Event
- **NTSB number:** DEN99LA015
- **Event ID:** 20001211X11245
- **Type:** Accident
- **Date:** 1998-10-21
- **Location:** ENGLEWOOD, CO, USA
- **Coordinates:** 39.579956, -104.859031
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 1
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Mooney
- **Model:** M20C
- **Registration:** N6405U
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The undertorquing of the camshaft gear retaining bolts during engine overhaul by maintenance personnel.  A factor was the unsuitable terrain for a forced landing.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN99LA015) · AI Analytics · CC0 1.0*