# NTSB Accident DEN93LA091
> **Continental Copters TOMCAT MK5A** · 1993-07-30 · DUSON, LA, USA · NONE
## Event
- **NTSB number:** DEN93LA091
- **Event ID:** 20001211X12902
- **Type:** Accident
- **Date:** 1993-07-30
- **Location:** DUSON, LA, USA
- **Coordinates:** 30.229238, -92.190147
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** Continental Copters
- **Model:** TOMCAT MK5A
- **Registration:** N9014T
- **FAR Part:** 137
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FAILURE OF THE TRANSMISSION MAST BEARING, RESULTING IN OIL CONTAMINATION AND SUBSEQUENT BLOCKAGE OF THE INTERNAL OIL PORTS AND PASSAGES.  FACTORS WERE: TOTAL LOSS OF COLLECTIVE CONTROL AND PARTIAL LOSS OF CYCLIC CONTROL.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=DEN93LA091) · AI Analytics · CC0 1.0*