ASN Wikibase Occurrence # 45207
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| Date: | Tuesday 3 June 2003 |
| Time: | 11:03 |
| Type: |  Robinson R22 Beta |
| Owner/operator: | Helitech |
| Registration: | N23428 |
| MSN: | 2208 |
| Year of manufacture: | 1992 |
| Total airframe hrs: | 2186 hours |
| Engine model: | Lycoming O-320-B2C |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Montpelier, Virgina -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Survey |
| Departure airport: | Shannon Airport, VA (EZF) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter took off approximately 100 pounds over maximum gross weight, then flew for an hour and a half conducting low altitude power line inspections. A hand-held Global Positioning System receiver located near the wreckage recorded the entire flight. A review of the last 23 seconds of recorded data revealed that the helicopter was headed 088 degrees, before it initiated a left turn to a heading of 285 degrees. During that time, the helicopter decelerated from a ground speed of 30.4 knots to 3.6 knots before the data ended. The helicopter descended vertically through trees, and came to rest on its right side. The collective was found in the full-up position. Examination of the low rotor RPM light displayed significant stretching and deformation to the filament, consistent with a hot impact. The Robinson R-22 Beta Pilot Operating Handbook (POH) Safety Notice #SN-10, stated that a primary cause of fatal accidents in light helicopters is failure to maintain rotor RPM. The 417-hour helicopter pilot was reported to have accumulated a total of 370 hours in R-22 helicopters.
Probable Cause: The pilot's failure to maintain adequate main rotor rpm while maneuvering at a low altitude.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20030612X00866&key=1
FAA register: 2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=23428
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Oct-2008 00:45 | ASN archive | Added |
| 27-Sep-2016 20:08 | Dr.John Smith | Updated [Time, Operator, Location, Departure airport, Destination airport, Source, Narrative] |
| 27-Sep-2016 20:10 | Dr.John Smith | Updated [Damage, Narrative] |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 08-Dec-2017 18:50 | ASN Update Bot | Updated [Operator, Departure airport, Destination airport, Source, Narrative] |
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