ASN Wikibase Occurrence # 366591
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Friday 13 July 1990 |
| Time: | 12:25 LT |
| Type: |  Hughes 369D |
| Owner/operator: | Fly Wright Corp. |
| Registration: | N58239 |
| MSN: | 369-0392D |
| Total airframe hrs: | 361 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Toutle, WA -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | 19 Mile House, WA |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HUGHES 369D COLLIDED WITH TERRAIN AFTER MANEUVERING WITHIN THE CRATER AT MT ST HELENS. THE PILOT STATED THAT HE HAD AN INDICATION OF AN ENGINE-OUT WARNING, AND INITIATED AN AUTOROTATION. BOTH REAR SEAT PASSENGERS OBSERVED VOLCANIC ASH COMING IN THEIR WINDOWS JUST BEFORE THE CRASH. THEY AND A THIRD PASSENGER STATED THAT THE PILOT HAD BEEN PLANNING ON LANDING IN THE CRATER AS REQUESTED BY THE FOURTH PASSENGER. THE POWERPLANT HAD TO BE SHUT DOWN AFTER THE CRASH LANDING. DURING A POST-ACDNT CHECK, THE ENG OPERATED SATISFACTORILY.
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.
Accident investigation:
 |
|
Sources:
NTSB SEA90LA135
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Mar-2024 10:04 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation