Individually Owned: 150,657
Corporate Owned: 137,281
Minneapolis-St Paul Intl/Wold- Airport
Aircraft Accident/Incident Report
Minneapolis, Minnesota 55450
Tuesady, May 10, 2005 19:36 CDT
NTSB Narrative Summary Released at Completion of Accident
The DC-9 was taxiing to the gate area when it collided with a company A-319 that was being pushed back from the gate. Prior to arriving at the destination airport, the DC-9 experienced a loss of hydraulic fluid from a fractured rudder shutoff valve located in the DC-9's right side hydraulic system. The left side hydraulic system had normal hydraulic pressure and quantity throughout the flight. The flightcrew elected to continue to the scheduled destination and declared an emergency while on approach to the destination airport. After landing, the emergency was negated by the flight crew and the airplane taxied to the gate. Flight data recorder information indicates the left engine, which provides power for the left hydraulic system, was shut down during taxi. The captain stated he did not remember shutting the left engine down, and that if he had, it would have been after clearing all runways. The first officer stated that he was unaware that the left engine was shut down. Upon arrival at the gate with the left engine shut down and no hydraulic pressure from the left system and a failure of the right hydraulic system, the airplane experienced a loss of steering and a loss of brakes. The flightcrew requested company maintenance to chock the airplane since they were unable to use brakes to stop the airplane. The crew said they were going to keep the "...engines running in case we have to use reversers..." The airplane began to roll forward and the captain applied reverse thrust but the reversers did not deploy. The airplane impacted the A-319 with a speed of approximately 15.65 miles per hour to 16.34 miles per hour. Evacuation of the DC-9 was completed approximately 5:22 minutes after the collision and evacuation of the A-319 occurred approximately 13:08 minutes after the collision. Examination of the left hydraulic system revealed no anomalies and examination of the right hydraulic system revealed a fractured rudder shutoff valve that displayed features consistent with fatigue. Following the accident, the airplane manufacturer issued a service letter pertaining to the replacement of the rudder shutoff valve based upon reliability information that was reported to them. The number of reports was greater than that of the Federal Aviation Administration's Service Difficulty Reports database, and less than the operators records.
NTSB Probable Cause Narrative
the Captain's decision to shutdown the left engine during taxi with no hydraulic pressure on the right side hydraulic system to effectively operate the brakes, steering, or thrust reversers. A factor was the fatigue fracture of the rudder shutoff valve which resulted in the loss of right side hydraulic pressure.
Event Information
| Type of Event | Accident |
| Event Date | 5/10/2005 |
| Event Day of the Week | Tuesday |
| Time of Event | 1936 |
| Event Time Zone | Central Daylight Time |
| Event City | Minneapolis |
| Event State | MINNESOTA |
| Event Country | -- |
| Zipcode of the event site | 55450 |
| Event Date Year | 2005 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | Yes |
| Event Location Latitude | 445250N |
| Event Location Longitude | 0931301W |
| Event Location Airport | MINNEAPOLIS-ST PAUL INTL/WOLD- |
| Event Location Nearest Airport ID | MSP |
| 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 | 841 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1853 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | MSP |
| Elevation of weather observation facility | 841 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 3900 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 16 |
| Dew Point at event time (in degress fahrenheit) | 13 |
| Wind Direction (degrees magnetic) | 230 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.91 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | 3 |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | 7 |
| Injury Total None | 137 |
| Injury Total Serious | 1 |
| Injury Total All | 8 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 21337 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | May 10 2005 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Apr 25 2007 2:54PM |
| User who most recently changed record | NTSB\lema |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | FAA-AAI-100 |
Aircraft Involved |
||
|---|---|---|
Aircraft #1 |
Aircraft #2 |
|
| Aircraft Registration Number | N763NC | N368NB |
| NTSB Number | CHI05MA111A | CHI05MA111B |
| Missing Aircraft Indicator | -- | -- |
| Federal Aviation Reg. Part | Part 121: Air Carrier | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR | IFR |
| Flight plan Was Activated? | Yes | Yes |
| Damage | Substantial | Substantial |
| Aircraft Fire | None | -- |
| Aircraft Explosion | None | -- |
| Aircraft Manufacturer's Full Name | McDonnell Douglas | Airbus Industrie |
| Aircraft Model | DC-9-51 | A-319-114 |
| Aircraft Series Identifier | -- | -- |
| Aircraft Serial Number | 47716 | -- |
| Certified Max Gross Weight | 123200 | -- |
| Aircraft Category | Airplane | Airplane |
| Aircraft Registration Class | -- | -- |
| Aircraft is a homebuilt? | No | No |
| Flight Crew Seats | -- | -- |
| Cabin Crew Seats | -- | -- |
| Passenger Seats | -- | -- |
| Total number of seats on the aircraft | 131 | -- |
| Number of Engines | 2 | 2 |
| Fixed gear or retractable gear | Fixed | Fixed |
| Aircraft, Type of Last Inspection | Continuous Airworthiness | -- |
| Date of Last Inspection | Aug 1 2004 12:00AM | -- |
| Airframe hours since last inspection | -- | -- |
| Airframe Hours | 67268 | -- |
| ELT Installed | No | -- |
| ELT Activated | No | -- |
| ELT Aided Location of Event Site | No | -- |
| ELT Type | -- | -- |
| Aircraft Owner Name | Northwest Airlines Inc. | -- |
| Aircraft Owner Street Address | 7500 Airline Drive | -- |
| Aircraft Owner City | Minneapolis | -- |
| Aircraft Owner State | MN | -- |
| Aircraft Owner Country | USA | -- |
| Aircraft Owner Zipcode | 55450 | -- |
| Operator is an individual? | No | -- |
| Operator Name | -- | Northwest Airlines Inc. |
| Operator Same as Owner? | Yes | -- |
| Operator Is Doing Business As | -- | -- |
| Operator Address Same as Owner? | Yes | -- |
| Operator Street Address | -- | 7500 Aviation Drive |
| Operator City | -- | Minneapolis |
| Operator State | -- | MN |
| Operator Country | -- | USA |
| Operator Zip code | -- | 55450 |
| Operator Code | NWAA | NWAA |
| 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 | Scheduled |
| Indicates Domestic or International Flight | Domestic | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only | Passenger Only |
| Type of Flying (Per_Bus / Primary) | -- | -- |
| Second Pilot on Board | Yes | -- |
| Departure Point Same as Event | No | Yes |
| Departure Airport Code | CMH | MSP |
| Departure City | Columbus | Minneapolis |
| Departure State | OH | MN |
| Departure Country | USA | USA |
| Departure Time | 1826 | 1930 |
| Departure Time Zone | EDT | CDT |
| Destination Same as Local Flt | crash at destination city | -- |
| Destination Airport Code | MSP | SAT |
| Destination City | Minneapolis | San Antonio |
| Destination State | MN | TX |
| Destination Country | USA | USA |
| Specific Phase of Flight | Taxi | Standing |
| Report sent to ICAO? | -- | -- |
| Evacuation occurred | -- | -- |
| Date of most recent change to record | Mar 7 2007 5:48PM | Apr 17 2007 10:12AM |
| User who most recently changed record | DINC | NTSB\HAMG |
| Since inspection or accident | Time of Accident | -- |
| Event Location Runway Number and Location | 22 | -- |
| Runway Length | 10006 | -- |
| Runway Width | 150 | -- |
| Sight Seeing flight | No | No |
| Air Medical Flight | No | No |
| Medical Flight | -- | -- |