ASN Wikibase Occurrence # 974
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| Date: | Friday 16 November 2007 |
| Time: | 13:40 |
| Type: |  Cessna 210L |
| Owner/operator: | Private |
| Registration: | N987M |
| MSN: | 21061093 |
| Year of manufacture: | 1975 |
| Total airframe hrs: | 3320 hours |
| Engine model: | Teledyne Continental TSIO-520-H4B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Santa Barbara Municipal Airport, Santa Barbara, CA -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Chino, CA (CNO) |
| Santa Barbara, CA (SBA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Prior to landing the pilot confirmed that the landing gear was down and locked. During the landing roll the airplane began to veer left, followed by the left main landing gear collapsing. The airplane came to rest upright on the left side of the runway with its left elevator resting on the runway's surface. A post-accident examination revealed that the left main landing gear down limit switch plunger was bent and stuck in the closed position, falsely indicating that the left main landing gear was locked [down]. The examination further revealed that the two hydraulic hoses to the downlock actuator were making contact with the airplane's skin, binding the downlock from fully opening to allow the down limit switch to clear the striker plate during the down cycle. The two hoses were subsequently repositioned to eliminate the binding, which resulted in the landing gear operating normally. It was not determined how the switch had become bent. The pilot reported no anomalies with the airplane prior to the flight.
Probable Cause: The left main landing gear's down limit switch plunger being bent and stuck in the closed position, which resulted in the collapse of the landing gear during the landing roll. The reason for the down limit switch plunger being bent could not be determined.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20071121X01828&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Jan-2008 23:41 | JINX | Added |
| 10-Sep-2008 22:57 | harro | Updated |
| 21-Dec-2016 19:13 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:14 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 04-Dec-2017 19:01 | ASN Update Bot | Updated [Cn, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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