# NTSB Accident SEA98LA192
> **Mayala DRAGONFLY** · 1998-09-30 · AVON, MT, USA · MINR
## Event
- **NTSB number:** SEA98LA192
- **Event ID:** 20001211X11182
- **Type:** Accident
- **Date:** 1998-09-30
- **Location:** AVON, MT, USA
- **Coordinates:** 46.650657, -112.600593
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Mayala
- **Model:** DRAGONFLY
- **Registration:** N4478V
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

Failure of the engine crankshaft aft oil seal resulting in the loss of engine oil, and rough terrain during the forced landing.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA98LA192) · AI Analytics · CC0 1.0*