# NTSB Accident SEA89LA177
> **BELL 47G** · 1989-09-25 · CORVALLIS, OR, USA · MINR
## Event
- **NTSB number:** SEA89LA177
- **Event ID:** 20001213X29505
- **Type:** Accident
- **Date:** 1989-09-25
- **Location:** CORVALLIS, OR, USA
- **Coordinates:** 44.630947, -123.270072
## Injuries
- **Highest injury:** MINR
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 1
- **Uninjured:** 1
- **Total aboard:** 2
## Aircraft
- **Make:** BELL
- **Model:** 47G
- **Registration:** N47VS
- **FAR Part:** 091
- **Engines:** 1
- **Damage:** DEST
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

STUDENT PILOT'S IMPROPER USE OF THE COLLECTIVE CONTROL WHILE PERFORMING HOVERING AUTOROTATIONS, AND THE INSTRUCTOR'S INADEQUATE SUPERVISION OF THE STUDENT'S ACTIONS, WHICH RESULED IN HARD LANDINGS. IN ADDITION, THE ENGINE MOUNT WAS SIGNIFICANTLY WEAKENED STRUCTUALLY AS A RESULT OF CORROSION.

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*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=SEA89LA177) · AI Analytics · CC0 1.0*