ASN Wikibase Occurrence # 43267
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: | Tuesday 2 June 1998 |
| Time: | 17:10 LT |
| Type: |  McDonnell Douglas MD530F (369FF) |
| Owner/operator: | Winco |
| Registration: | N16031 |
| MSN: | 52FF |
| Year of manufacture: | 1988 |
| Total airframe hrs: | 5350 hours |
| Engine model: | Allison 250-C30 |
| Fatalities: | Fatalities: 1 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Shoshone, ID -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | Gooding, ID (KGNG) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Witnesses reported that the helicopter had just released from positioning a fiber optic cable on top of a power pole. An external line is hung over the left landing skid, forward of the front leg, and a shoe is used to cradle the cable to lift and position it in place for permanent attachment. A lineman was on the pole and in the process of permanently attaching the cable to the pole when the pilot maneuvered the helicopter away and behind the lineman about five feet. Another lineman was standing on the left side landing skid and was then going to install vibration dampers on the cable. The lineman on the pole stated that everything was normal when he heard what sounded like a clicking sound or a sound like a card in a spoked wheel. The lineman on the pole stated that he knew that the helicopter was in the wires and saw pieces of the helicopter flying. The lineman ducked down on the pole, and when he looked up again, the helicopter had already gone through the transmission wires and was laying on its right side on the ground. Impact signatures of a cable strike were found on both tailrotor blades. The cable that the helicopter was positioned next to was severed. Further inspection of the severed cable noted that 19 of the 22 strands that make up the fiber optic cable received varying amounts of mechanical damage prior to failure. During the post-crash wreckage documentation and inspection, no evidence was found to indicate a mechanical failure or malfunction.
Probable Cause: Failure to maintain clearance from wires. A transmission wire was a factor.
Accident investigation:
 |
|
Sources:
NTSB SEA98FA084
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 07-Apr-2024 11:18 | ASN Update Bot | Updated [Time, Cn, Other fatalities, Departure airport, Source, Narrative, 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