# NTSB Incident ENG09IA009
> **BOEING 737-3B7** · 2009-07-15 · Charlotte (CLT), NC, USA · NONE
## Event
- **NTSB number:** ENG09IA009
- **Event ID:** 20090730X12915
- **Type:** Incident
- **Date:** 2009-07-15
- **Location:** Charlotte (CLT), NC, USA
- **Coordinates:** 35.230159, -80.90995
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 0
## Aircraft
- **Make:** BOEING
- **Model:** 737-3B7
- **Registration:** N506AU
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** MINR
## Conditions
- **Light:** —
- **Weather:** —
## Probable cause

The failure of the left hand main landing gear was caused by heat induced cracks resulting from abusive grinding/polishing of the chrome plate that was applied during the last overhaul.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ENG09IA009) · AI Analytics · CC0 1.0*