ASN Wikibase Occurrence # 321738
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| Date: | Tuesday 15 April 2008 |
| Time: | 13:50 |
| Type: |  Cessna 560XL Citation Excel |
| Owner/operator: | NetJets |
| Registration: | N613QS |
| MSN: | 560-5599 |
| Year of manufacture: | 2005 |
| Total airframe hrs: | 2496 hours |
| Engine model: | Pratt & Whitney Canada PW545B |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial, repaired |
| Category: | Accident |
| Location: | White Plains-Westchester County Airport, NY (HPN) -
 United States of America
|
| Phase: | Landing |
| Nature: | Executive |
| Departure airport: | West Palm Beach International Airport, FL (PBI/KPBI) |
| White Plains-Westchester County Airport, NY (HPN/KHPN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
After an uneventful flight, the airplane touched down at its destination airport. Approximately 3 seconds after touchdown, about the time when the speedbrakes were deployed, the landing gear warning horn began to annunciate and the landing gear retracted. There were no unsafe landing gear configuration warnings prior to touchdown. Extensive testing of the airplane's hydraulic and electrical systems did not reveal any malfunctions that would have resulted in the accident sequence. The landing gear and speedbrake systems were independent; however, wiring from both systems were located on five sets of common connectors. Examination of the wires and connector pins within wiring bundles common to the speedbrake and landing gear system did not reveal any evidence of electrical faults; however, an electrical short could have existed at the time of the accident which would have resulted in a spurious retract signal and would not have been evident in subsequent testing.
Probable Cause: An uncommanded landing gear retraction after touchdown for undetermined reasons.
Accident investigation:
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Sources:
Location
Revision history:
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