ASN Wikibase Occurrence # 90528
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| Date: | Monday 1 July 1996 |
| Time: | 17:57 LT |
| Type: |  Agusta A109A Hirundo |
| Owner/operator: | Winningstad, C. Norman |
| Registration: | N808GM |
| MSN: | 7132 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 2111 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Newport, OR -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Hillsboro, OR (KHIO) |
| (27OR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter's left main landing gear collapsed as the pilot attempted a normal landing from a hover at his personal helipad. After the collapse, the main rotor blades and tail rotor blades contacted the ground, causing substantial damage to the tailboom and fuselage. The pilot stated that he saw three green landing gear cockpit lights, just before the accident, indicating that the landing gear was down and locked. He also stated that he heard a 'snap' noise in the tailboom just prior to the accident. An examination of the wreckage did not reveal any evidence of preimpact mechanical malfunction, deficiency, or structural failure. The left main landing gear failed in overload. The wind was reported to be 350 degrees at 17 knots, gusting to 24 knots.
Probable Cause: the pilot's failure to adequately compensate for the gusty wind condition during the landing. The gusty wind was a related factor.
Accident investigation:
 |
|
Sources:
NTSB SEA96LA139
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Feb-2011 15:18 | TB | Added |
| 27-Jan-2013 10:04 | TB | Updated [Date, Time, Aircraft type, Registration, Cn, Operator, Total fatalities, Total occupants, Other fatalities, Location, Country, Phase, Nature, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 05:54 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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