# NTSB Accident SEA91LA137
> **HUGHES 269B** · 1991-06-19 · WARRENTON, OR, USA · MINR
## Event
- **NTSB number:** SEA91LA137
- **Event ID:** 20001212X17389
- **Type:** Accident
- **Date:** 1991-06-19
- **Location:** WARRENTON, OR, USA
- **Coordinates:** 46.120681, -123.909645
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 0
- **Total aboard:** 1
## Aircraft
- **Make:** HUGHES
- **Model:** 269B
- **Registration:** N9380F
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

THE PILOT FAILED TO MAINTAIN PROPER ROTOR SPEED DURING A SIMULATED AUTOROTATION.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA91LA137) · AI Analytics · CC0 1.0*