Individually Owned: 151,845
Corporate Owned: 143,699
Eagle County Regional Airport
Aircraft Accident/Incident Report
Eagle, Colorado 81631
Monday, November 29, 2004 12:36 MST
NTSB Narrative Summary Released at Completion of Accident
According to the captain, the airplane touched down on runway 25 at 1,000 feet. Shortly after the nose wheel touched down, the aircraft experienced an uncommanded divergence to the right. The captain was unable to correct for the divergence. Approximately 2,800 feet down the runway, skid/scuff marks from the airplane's nose landing gear tires appear as the airplane begins to veer to the right. Approximately 3,900 feet, the airplane departed the right side of the runway. The nose landing gear folded aft, and the airplane's nose and right wing tip struck the terrain. The airplane continued to slide, coming to a stop on the edge of the runway at 4,500 feet. The airplane's forward fuselage and outboard right wing were substantially damaged. EGE AWOS reported calm wind. Several tests of the nose wheel steering servo valve unit revealed that it was commanding a full flow output, resulting in a "hard over," condition. During the disassembly of the servo valve, a small piece of Teflon lacing tape was located under the torque motor cover seal. Moisture, rust and a white powdery substance, was observed under the cover, on the torque motor frame, magnets, and in the armature air gaps. The unit was cleaned, reassembled and installed back on the test stand. A room temperature test and cold soak test was completed. No further "hard over" conditions were detected. According to Parker, the hard over condition is consistent with the foreign object contamination. The contamination would permit accumulation of moisture, which could freeze and exert torque on the torque motor armature. This condition would offset the torque balance and cause the first stage jet to move, commanding the second stage spool into a hard over (P to C2) condition.
NTSB Probable Cause Narrative
nose wheel steering system failure due to foreign material substance contamination.
Event Information
| Type of Event | Accident |
| Event Date | 11/29/2004 |
| Event Day of the Week | Monday |
| Time of Event | 1236 |
| Event Time Zone | Mountain Standard Time |
| Event City | Eagle |
| Event State | COLORADO |
| Event Country | -- |
| Zipcode of the event site | 81631 |
| Event Date Year | 2004 |
| Event Date Month | 11 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | Eagle County Regional |
| Event Location Nearest Airport ID | EGE |
| 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 | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1223 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | KEGE |
| Elevation of weather observation facility | 6535 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | MST |
| 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) | -8 |
| Dew Point at event time (in degress fahrenheit) | -16 |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30.13 |
| Density Altitude (feet) | 5150 |
| 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 | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 18233 |
| NTSB Notification Source | FAA Comm Ctr |
| NTSB Notification Date | Nov 29 2004 12:00AM |
| NTSB Notification Time | 1250 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Sep 13 2005 12:54PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Denver FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N420QS |
| NTSB Number | DEN05LA030 |
| 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 | 1320 |
| Certified Max Gross Weight | 75000 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 15 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Sep 30 2004 12:00AM |
| Airframe hours since last inspection | 249.5 |
| Airframe Hours | 6699.7 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Consolidated International Services LLC. |
| Aircraft Owner Street Address | Two Leadership Square |
| Aircraft Owner City | Oklahoma City |
| Aircraft Owner State | OK |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 73102 |
| Operator is an individual? | No |
| Operator Name | NJI, Inc. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 108 Traders Cross, Suite 200 |
| Operator City | Okatie |
| Operator State | SC |
| Operator Country | USA |
| Operator Zip code | 29909 |
| Operator Code | -- |
| Owner has at least one certificate | -- |
| Other Operator of large aircraft? | -- |
| 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 | SFO |
| Departure City | San Francisco |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1040 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | EGE |
| Destination City | Eagle |
| Destination State | CO |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Jun 21 2005 11:21AM |
| User who most recently changed record | MCBM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 25 |
| Runway Length | 8000 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |