# NTSB Accident LAX99LA295
> **Cessna 150M** · 1999-09-05 · MENLO PARK, CA, USA · NONE
## Event
- **NTSB number:** LAX99LA295
- **Event ID:** 20001212X19799
- **Type:** Accident
- **Date:** 1999-09-05
- **Location:** MENLO PARK, CA, USA
- **Coordinates:** 37.450408, -122.170204
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** Cessna
- **Model:** 150M
- **Registration:** N8135U
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The fatigue failure of the left muffler rear wall, which resulted in hot exhaust gasses being ported onto, and shorting, the magneto p-lead wires.  The failure of maintenance personnel to detect the impending failure of the muffler during the recent engine maintenance activity is also causal.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX99LA295) · AI Analytics · CC0 1.0*