# NTSB Accident SEA03LA019
> **Eurocopter Deutschland EC-135 P1** · 2002-12-18 · Loon Lake, WA, USA · NONE
## Event
- **NTSB number:** SEA03LA019
- **Event ID:** 20021220X05621
- **Type:** Accident
- **Date:** 2002-12-18
- **Location:** Loon Lake, WA, USA
- **Coordinates:** 48.06361, -117.621665
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 4
- **Total aboard:** 4
## Aircraft
- **Make:** Eurocopter Deutschland
- **Model:** EC-135 P1
- **Registration:** N311MS
- **FAR Part:** 135
- **Engines:** 2
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

The pilot's inadvertent flight into instrument meteorological conditions (IMC) while in cruise flight, and an excessive descent rate.  Factors include falling snow, whiteout conditions and dark night conditions.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA03LA019) · AI Analytics · CC0 1.0*