# NTSB Incident FTW89IA064
> **MCDONNELL DOUGLAS DC-9-82** · 1989-03-01 · HOUSTON, TX, USA · NONE
## Event
- **NTSB number:** FTW89IA064
- **Event ID:** 20001213X27891
- **Type:** Incident
- **Date:** 1989-03-01
- **Location:** HOUSTON, TX, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 185
- **Total aboard:** 185
## Aircraft
- **Make:** MCDONNELL DOUGLAS
- **Model:** DC-9-82
- **Registration:** N820NY
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** IMC
## Probable cause

FAILURE OF THE TRACON FINAL APPROACH CONTROLLER TO ASSURE RADAR SEPARATION BETWEEN THE AIRCRAFT. FACTORS RELATED TO THE ACCIDENT WERE: INADEQUATE SUPERVISION BY THE ATC SUPERVISOR, EXCESSIVE WORKLOAD FOR THE CONTROLLER, UNCLEAR INSTRUCTIONS BY THE CONTROLLER, AND A MISUNDERSTANDING OF THE ATC CLEARANCE BY THE FLIGHT CREW OF CONTINENTAL FLIGHT 122.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=FTW89IA064) · AI Analytics · CC0 1.0*