# NTSB Accident LAX99FA270
> **Beech J35** · 1999-08-17 · MARYSVILLE, CA, USA · SERS
## Event
- **NTSB number:** LAX99FA270
- **Event ID:** 20001212X19548
- **Type:** Accident
- **Date:** 1999-08-17
- **Location:** MARYSVILLE, CA, USA
- **Coordinates:** 39.149452, -121.46939
## Injuries
- **Highest injury:** SERS
- **Fatal:** 0
- **Serious:** 2
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 2
## Aircraft
- **Make:** Beech
- **Model:** J35
- **Registration:** N4932B
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

A loss of engine power due to improperly torque cylinder base nuts by maintenance personnel during a top overhaul.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX99FA270) · AI Analytics · CC0 1.0*