ASN Wikibase Occurrence # 133557
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: | Saturday 8 November 1997 |
| Time: | 13:20 LT |
| Type: |  Bell 206B |
| Owner/operator: | Hillsboro Helicopters Inc. |
| Registration: | N101LF |
| MSN: | 2663 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 6547 hours |
| Engine model: | Allison 250 C20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Forest Grove, OR -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | Hillsboro, OR (KHIO) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter was approaching a pick-up area for a load of Christmas trees. The approach was over a tree-lined ridge and down into a basin. The pilot reported that while decelerating, he heard a loud bang. Warning horns and lights went off as the helicopter turned to the left and rolled right, subsequently colliding with trees and terrain. A witness on the ground stated that as the helicopter was descending, the long line swung forward and straight up in front of the cabin. The main rotor blades instantly separated and the helicopter started to descend. The witness heard a loud screaming sound, then a loud explosion, and observed the helicopter come apart in mid-air. The cabin continued in the same direction that it was traveling and turned up-side down and collided with trees and terrain. The tail section separated and collided with terrain near where the witness was standing. Cable marks were found on one main rotor blade and one tail rotor blade. The load line itself was severed from the helicopter, and the load line hook displayed severe impact damage signatures.
Probable Cause: Excessive deceleration of the helicopter by the pilot-in-command, resulting in an in-flight main rotor blade strike on the helicopter's external load line and subsequent main rotor separation. Downhill terrain which led to a descending approach to the pickup point was a factor.
Accident investigation:
 |
|
Sources:
NTSB SEA98LA013
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 08-Apr-2024 11:54 | ASN Update Bot | Updated [Time, Other fatalities, Nature, Departure airport, Source, Narrative, Category, Accident report] |
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