Individually Owned: 150,657
Corporate Owned: 137,281
Sugar Land Regional Airport
Aircraft Accident/Incident Report
Sugar Land, Texas 77478
Sunday, November 11, 2007 10:21 CST
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that the flight, approach to landing and touchdown were uneventful. Soon after touchdown, when the nose landing gear touched down, the ground spoilers deployed automatically and the thrust reversers were deployed. The pilot then stated: " When the nose wheels touched down, a violent vibration or shaking was felt, full back force was applied to the control yoke and the vibration eased until the aircraft slowed further and the vibration returned. The nose landing gear collapsed to the right side of the nose and the aircraft skidded to a stop." Damage was confirmed to a forward pressure vessel. Both nose landing gear tires remained inflated through the collapse. The nose gear assembly was shipped to Gulfstream facilities for further examination and analysis. The cockpit voice recorder (CVR) and flight data recorder (FDR) were recovered following the accident. No significant information concerning the event was obtained from the CVR. The data from the FDR indicated that the landing touchdown was not heavy or with excessive drift. The data also indicated that the deceleration of the aircraft increased within seconds of the touchdown consistent with spoiler and thrust reverser deployment. Examination of the nose landing gear revealed that the nose landing collapsed and separation were the result of nose landing gear shimmy. The shimmy developed when the torque link connection to the nose wheel steering/damper unit separated as the result of the improper installation of the nose landing gear upper torque arm pin by the flight crew during the last preflight inspection of the aircraft.
NTSB Probable Cause Narrative
The collapsed of the nose landing gear due to shimmy as the result of the improper installation of the nose landing gear upper torque arm pin by the flight crew during the preflight inspection of the aircraft.
Event Information
| Type of Event | Accident |
| Event Date | 11/11/2007 |
| Event Day of the Week | Sunday |
| Time of Event | 1021 |
| Event Time Zone | Central Standard Time |
| Event City | Sugar Land |
| Event State | TEXAS |
| Event Country | -- |
| Zipcode of the event site | 77478 |
| Event Date Year | 2007 |
| Event Date Month | 11 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 293759N |
| Event Location Longitude | 0953920W |
| Event Location Airport | Sugar Land Regional Airport |
| Event Location Nearest Airport ID | KSGR |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 82 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | KSGR |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | -- |
| Lighting Conditions | -- |
| 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) | 26 |
| Dew Point at event time (in degress fahrenheit) | 18 |
| Wind Direction (degrees magnetic) | 160 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.07 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | KSGR 111553Z 16010KT 10SM CLR 26/18 A3007 RMK AO2 |
| 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 | 8 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 24829 |
| NTSB Notification Source | Regional Operations Center, FT |
| NTSB Notification Date | Nov 11 2007 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Dec 22 2008 1:18PM |
| User who most recently changed record | gamw |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | San Antonio, Texas |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N209LS |
| NTSB Number | DFW08LA030 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | GULFSTREAM AEROSPACE |
| Aircraft Model | G-IV |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 1449 |
| Certified Max Gross Weight | -- |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 22 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | AVN AIR LLC |
| Aircraft Owner Street Address | 44 OLD RIDGEBURY RD |
| Aircraft Owner City | DANBURY |
| Aircraft Owner State | CT |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 06810-5107 |
| Operator is an individual? | No |
| Operator Name | AVN AIR LLC |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 44 OLD RIDGEBURY RD |
| Operator City | DANBURY |
| Operator State | CT |
| Operator Country | USA |
| Operator Zip code | 06810-5107 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| 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) | Business |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | -- |
| Departure City | Baton Rouge |
| Departure State | LA |
| Departure Country | USA |
| Departure Time | 932 |
| Departure Time Zone | CST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | KSGR |
| Destination City | Sugar Land |
| Destination State | TX |
| Destination Country | USA |
| Specific Phase of Flight | Landing - flare/touchdown |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Dec 22 2008 12:58PM |
| User who most recently changed record | gamw |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 17 |
| Runway Length | 8000 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |