# NTSB Incident LAX04IA135
> **Bell 407** · 2004-02-19 · Madera, CA, USA · NONE
## Event
- **NTSB number:** LAX04IA135
- **Event ID:** 20040301X00248
- **Type:** Incident
- **Date:** 2004-02-19
- **Location:** Madera, CA, USA
- **Coordinates:** 36.988609, -120.112777
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 2
- **Total aboard:** 2
## Aircraft
- **Make:** Bell
- **Model:** 407
- **Registration:** N601MT
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

the failure of the number 6 hangar bearing due to overheating.  A factor in the accident was the operator's likely inadequate compliance with service bulletins and airworthiness directives on this issue, along with an inadequate maintenance inspection program for the bearings.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX04IA135) · AI Analytics · CC0 1.0*