Individually Owned: 150,657
Corporate Owned: 137,281
Denver International Airport
Aircraft Accident/Incident Report
Denver, Colorado 80249
Sunday, April 11, 2004 14:25 MDT
NTSB Narrative Summary Released at Completion of Accident
The captain reported that while in cruise flight at flight level 330, the crew received a master caution light and a hydraulic system 1 low pressure along with warning lights for the outboard ground spoilers, outboard spoilerons, and the outboard spoilers. The hydraulic fluid quantity and fluid temperature readings were good, but the system pressure was dropping. The crew ran the emergency checklist and continued their flight to Denver, using the backup (1B) system. On final approach and landing, the captain reported that they lost number 1 system pressure and quantity. The crew shut off the 1B system and continued to land. After landing, the crew shut down the number one engine and taxied to the gate. A post-incident examination of the airplane's number 1 hydraulic system showed that the hydraulic pump had come apart internally and seized. Metal fragments were found in the hydraulic filters and lines. Further examination of the hydraulic pump showed that several piston shoes in the pump's hanger and piston subassembly had come apart. The resulting metal fragments subsequently caused damage to the hold-down plate, the hanger, and other internal components of the pump, resulting in its seizure.
NTSB Probable Cause Narrative
The total failure of the airplane's number 1 system hydraulic pump.
Event Information
| Type of Event | Incident |
| Event Date | 4/11/2004 |
| Event Day of the Week | Sunday |
| Time of Event | 1425 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Denver |
| Event State | COLORADO |
| Event Country | -- |
| Zipcode of the event site | 80249 |
| Event Date Year | 2004 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 395131N |
| Event Location Longitude | 1044001W |
| Event Location Airport | Denver International Airport |
| Event Location Nearest Airport ID | DEN |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 5 |
| Degrees magnetic from airport | 170 |
| Airport Elevation | 5431 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1353 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 170 |
| Weather Observation Facility ID | DEN |
| Elevation of weather observation facility | 5431 |
| Distance of event from weather observation facility (units?) | 5 |
| Time Zone of the weather observation | MDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 800 |
| Sky/Lowest/Cloud Conditions | Few |
| 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) | 7 |
| Dew Point at event time (in degress fahrenheit) | -6 |
| Wind Direction (degrees magnetic) | 330 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30.03 |
| Density Altitude (feet) | 5408 |
| 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 | 60 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 16698 |
| NTSB Notification Source | FAA Comm Ctr |
| NTSB Notification Date | Apr 11 2004 12:00AM |
| NTSB Notification Time | 1515 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Dec 3 2004 9:35AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Denver, Colorado FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N609QX |
| NTSB Number | DEN04IA060 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | None |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Canadair |
| Aircraft Model | CL-600-2C10 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 10031 |
| Certified Max Gross Weight | 74999 |
| 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 | 74 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Mar 24 2004 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 5388.8 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Wells Fargo Bank Northwest NA Trust |
| Aircraft Owner Street Address | 299 S. Main Street #U1228-120 |
| Aircraft Owner City | Salt Lake City |
| Aircraft Owner State | UT |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 84111 |
| Operator is an individual? | No |
| Operator Name | Horizon Air |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 8070 NE Airtrans Way |
| Operator City | Portland |
| Operator State | OR |
| Operator Country | USA |
| Operator Zip code | 97218 |
| Operator Code | QXEA |
| 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 | Scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | -- |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | ONT |
| Departure City | Ontario |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1115 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | DEN |
| Destination City | Denver |
| Destination State | CO |
| Destination Country | USA |
| Specific Phase of Flight | Approach |
| Report sent to ICAO? | Yes |
| Evacuation occurred | No |
| Date of most recent change to record | Oct 8 2004 2:55PM |
| User who most recently changed record | MCBM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |