# NTSB Accident SEA90LA135
> **HUGHES 369D** · 1990-07-13 · TOUTLE, WA, USA · MINR
## Event
- **NTSB number:** SEA90LA135
- **Event ID:** 20001212X23833
- **Type:** Accident
- **Date:** 1990-07-13
- **Location:** TOUTLE, WA, USA
- **Coordinates:** 46.310577, -122.69033
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 2
- **Uninjured:** 3
- **Total aboard:** 5
## Aircraft
- **Make:** HUGHES
- **Model:** 369D
- **Registration:** N58239
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE PILOT'S IMPROPER PLANNING/DECISION BY OPERATING AND MANEUVERING THE HELIOCPTER IN A REGIME WHERE HE COULD NOT MAINTAIN ROTOR RPM. THE HIGH DENSITY ALTITUDE AND ROUGH TERRAIN WERE RELATED FACTORS.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA90LA135) · AI Analytics · CC0 1.0*