ASN Wikibase Occurrence # 134291
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| Date: | Thursday 27 June 2002 |
| Time: | 15:45 |
| Type: | Seattle Aerotech Helipower 2500 |
| Owner/operator: | General Helicopter, Inc. |
| Registration: | N13RM |
| MSN: | 0101 |
| Total airframe hrs: | 7 hours |
| Engine model: | Subaru |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Arlington, WA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Test |
| Departure airport: | Arlington, WA (AWO) |
| Arlington, WA (AWO) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that on the accident flight, he initially performed a hover and 360-degree pedal turn without problems. He stated that he then entered forward flight at 10 MPH, and then transitioned back to a hover at 3 feet above ground level (AGL), again without problems. He reported that he then turned around and entered forward flight in the opposite direction at 6 feet AGL and 20 MPH, again without problems. He stated that he then turned around again and entered forward flight at 30 MPH. He reported that as he decelerated from 30 MPH back toward a hover, the helicopter experienced a violent vibration of sufficient severity that he felt an immediate run-on landing was necessary. During the run-on landing, the helicopter nosed down, the forward blade struck the ground and the aft blade severed the helicopter's tail boom. The pilot reported that he then saw a flash in the helicopter's engine compartment in his peripheral vision, and thus decided to egress the helicopter immediately. After the pilot egressed, the helicopter's fuel tank caught fire and the helicopter burned. Post accident examination of the helicopter by personnel from the National Transportation Safety Board and Federal Aviation Administration disclosed no evidence as to the cause of the vibration or its origin.
Probable Cause: Aircraft control not maintained during a run-on landing. A vibration of unknown origin was a factor in the accident.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20020702X01030&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Dec-2017 16:47 | ASN Update Bot | Updated [Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Plane category] |
| 05-Oct-2021 10:34 | rotorspot | Updated [Cn] |
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