# NTSB Accident SEA98FA100
> **Aero Commander 680FL** · 1998-06-17 · HELENA, MT, USA · FATL
## Event
- **NTSB number:** SEA98FA100
- **Event ID:** 20001211X10417
- **Type:** Accident
- **Date:** 1998-06-17
- **Location:** HELENA, MT, USA
- **Coordinates:** 46.5302, -112.209831
## Injuries
- **Highest injury:** FATL
- **Fatal:** 1
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** Aero Commander
- **Model:** 680FL
- **Registration:** N446JR
- **FAR Part:** 135
- **Engines:** 2
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** IMC
## Probable cause

The pilot's failure to maintain the correct altitude while turning inbound during a procedure turn to the ILS final approach course. Factors include hilly/mountainous terrain and clouds in the area where the course reversal was performed.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA98FA100) · AI Analytics · CC0 1.0*