Pilot Debrief

CESSNA 560XL near White Plains, NY — 2008-04-15

Final reportNYC08LA162
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Date
2008-04-15
Location
White Plains, NY, USA
Airport
HPN
Aircraft
CESSNA 560XL
Registration
N613QS
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Landing

Probable cause

An uncommanded landing gear retraction after touchdown for undetermined reasons.

NTSB narrative

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.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Crew could have verified landing gear status before touchdown.

NTSB coding

Evidence available

  • CVR
  • Photos
  • 18 docket documents
View NTSB final reportView NTSB docket

Docket documents18

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