# NTSB Incident ATL92IA169
> **Saab-Scania AB (Saab) 340B** · 1992-08-31 · CHATTANOOGA, TN, USA · NONE
## Event
- **NTSB number:** ATL92IA169
- **Event ID:** 20001211X15315
- **Type:** Incident
- **Date:** 1992-08-31
- **Location:** CHATTANOOGA, TN, USA
- **Coordinates:** 35.000743, -85.229911
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 25
- **Total aboard:** 25
## Aircraft
- **Make:** Saab-Scania AB (Saab)
- **Model:** 340B
- **Registration:** N245AE
- **FAR Part:** 121
- **Engines:** 2
- **Damage:** —
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE FAILURE AND SUBSEQUENT SEIZURE OF THE REDUCTION GEAR BOX, AND THE FAILURE OF THE PROPELLER CONTROL UNIT AS A RESULT OF CONTAMINATED OIL SUPPLY WHICH IS SHARED WITH THE GEAR BOX.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=ATL92IA169) · AI Analytics · CC0 1.0*