Individually Owned: 150,657
Corporate Owned: 137,281
Westchester County Airport
Aircraft Accident/Incident Report
White Plains, New York 10604
Tuesady, April 15, 2008 13:50 EDT
NTSB Narrative Summary Released at Completion of Accident
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.
NTSB Probable Cause Narrative
An uncommanded landing gear retraction after touchdown for undetermined reasons.
Event Information
| Type of Event | Accident |
| Event Date | 4/15/2008 |
| Event Day of the Week | Tuesday |
| Time of Event | 1350 |
| Event Time Zone | Eastern Daylight Time |
| Event City | White Plains |
| Event State | NEW YORK |
| Event Country | -- |
| Zipcode of the event site | 10604 |
| Event Date Year | 2008 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 414001N |
| Event Location Longitude | 0734227W |
| Event Location Airport | Westchester County |
| Event Location Nearest Airport ID | HPN |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 439 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1356 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | HPN |
| Elevation of weather observation facility | 439 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 13 |
| Dew Point at event time (in degress fahrenheit) | -9 |
| Wind Direction (degrees magnetic) | 290 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 11 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.14 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 4 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 26453 |
| NTSB Notification Source | NTSB Communications Center |
| NTSB Notification Date | Apr 28 2008 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Dec 29 2009 12:40PM |
| User who most recently changed record | kenj |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Farmingdale, NY |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N613QS |
| NTSB Number | NYC08LA162 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91 Subpart K: Fractional |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 560XL |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 560-5599 |
| Certified Max Gross Weight | 20200 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | 2 |
| Cabin Crew Seats | 0 |
| Passenger Seats | 7 |
| Total number of seats on the aircraft | 9 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Mar 5 2008 12:00AM |
| Airframe hours since last inspection | 118 |
| Airframe Hours | 2496 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | NETJETS SALES INC |
| Aircraft Owner Street Address | C/O NETJETS SALES INC |
| Aircraft Owner City | Oklahoma City |
| Aircraft Owner State | OK |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 73102 |
| Operator is an individual? | No |
| Operator Name | NetJets Aviation, Inc. (Program Manager) |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Columbus |
| Operator State | OH |
| Operator Country | USA |
| Operator Zip code | 43219 |
| Operator Code | -- |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | -- |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Executive/Corporate |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | PBI |
| Departure City | West Palm Beach |
| Departure State | FL |
| Departure Country | USA |
| Departure Time | 1115 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | HPN |
| Destination City | White Plains |
| Destination State | NY |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Dec 29 2009 12:40PM |
| User who most recently changed record | kenj |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 34 |
| Runway Length | 6548 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |