# NTSB Incident DEN89IA124
> **BOEING 727-247** · 1989-05-24 · DENVER, CO, USA · NONE
## Event
- **NTSB number:** DEN89IA124
- **Event ID:** 20001213X28288
- **Type:** Incident
- **Date:** 1989-05-24
- **Location:** DENVER, CO, USA
- **Coordinates:** 39.759796, -104.920349
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 121
- **Total aboard:** 121
## Aircraft
- **Make:** BOEING
- **Model:** 727-247
- **Registration:** N296WA
- **FAR Part:** 121
- **Engines:** 3
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FAILURE OF THE LEFT MAIN LANDING GEAR FORWARD TRUNNION BEARING SUPPORT FITTING DUE TO A CRACK INITIATING AT THE FORWARD EDGE OF THE BORE AND PROPAGATING BY INTERGRANULAR STRESS CORROSION INTO THE BORE SURFACE THAT RESULTED IN AN EVENTUAL DUCTILE FRACTURE.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN89IA124) · AI Analytics · CC0 1.0*