# NTSB Incident ATL90IA060
> **DOUGLAS DC-9-31** · 1990-01-31 · LOUISVILLE, KY, USA · MINR
## Event
- **NTSB number:** ATL90IA060
- **Event ID:** 20001212X22363
- **Type:** Incident
- **Date:** 1990-01-31
- **Location:** LOUISVILLE, KY, USA
- **Coordinates:** 38.26025, -85.539436
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 71
- **Total aboard:** 73
## Aircraft
- **Make:** DOUGLAS
- **Model:** DC-9-31
- **Registration:** N8978E
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE DISABLING OF THE MAIN LANDING GEAR TORQUE LINK WHICH ALLOWED THE TRUCK TO ROTATE FREELY. THE TORQUE LINK WAS DISABLED WHEN EXCESSIVE VIBRATION WAS GENERATED BY EXCESSIVE PLAY OF THE TORQUE LINK PINS IN THEIR BUSHINGS.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ATL90IA060) · AI Analytics · CC0 1.0*