# NTSB Incident FTW92IA055
> **BOEING 737-232** · 1992-01-07 · DFW AIRPORT, TX, USA · NONE
## Event
- **NTSB number:** FTW92IA055
- **Event ID:** 20001211X13985
- **Type:** Incident
- **Date:** 1992-01-07
- **Location:** DFW AIRPORT, TX, USA
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 49
- **Total aboard:** 49
## Aircraft
- **Make:** BOEING
- **Model:** 737-232
- **Registration:** N322DL
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** MINR
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE FAILURE OF THE AFT CONE BOLT AS RESULT OF PREEXISTING FATIGUE CRACKING DUE TO IMPROPER MAINTENANCE, AND THE FAILURE OF THE SECONDARY SUPPORT STRUCTURE AS A RESULT OF LOADS THAT EXCEEDED THE CAPACITY OF THE ATTACHING HARDWARE AND THE   CRUSHABLE HONEYCOMB CORE.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=FTW92IA055) · AI Analytics · CC0 1.0*