Individually Owned: 150,657
Corporate Owned: 137,281
Minneapolis/St. Paul Intl Airport
Aircraft Accident/Incident Report
Minneapolis, Minnesota 55401
Monday, June 3, 2002 19:28 CDT
NTSB Narrative Summary Released at Completion of Accident
During landing rollout the right main landing gear (RMLG) collasped. The captain reported a normal landing was completed by the first officer and when he took over control of the airplane "the aircraft dropped sharply to the right and we began skidding down the runway with a continous warning horn. I continued braking and the aircraft came to a stop on centerline with a significant right lean." According to the NTSB Materials Laboratory Factual Report, the outer cylinder of the RMLG was fractured through the transition area above the fused section, with the fracture located approximately 19 inches from the upper end of the cylinder. The factual report noted the fracture initiation point "lies in the parting plane for the cylinder forging. The dark spot [fracture initiation point] was orientated transverse to the gear about 28 7/8 inches from the lower end of the cylinder." According to the factual report, multiple inclusions and intergranular cracks were uncovered within the examined fracture sample. The inclusions were mostly oxides of aluminum and calcium and some inclusions contained small sulfides of iron and manganese. The report noted there were fracture features that were consistent with overstress separation "emanating from the dark spot [fracture initiation point] with mostly ductile dimple formations and some cleavage like features."
NTSB Probable Cause Narrative
The failure of the right main landing gear due to fatigue.
Event Information
| Type of Event | Accident |
| Event Date | 6/3/2002 |
| Event Day of the Week | Monday |
| Time of Event | 1928 |
| Event Time Zone | Central Daylight Time |
| Event City | Minneapolis |
| Event State | MINNESOTA |
| Event Country | -- |
| Zipcode of the event site | 55401 |
| Event Date Year | 2002 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 445250N |
| Event Location Longitude | 0931301W |
| Event Location Airport | Minneapolis/St. Paul Intl |
| 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 | 1 |
| Degrees magnetic from airport | 120 |
| Airport Elevation | 841 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1939 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 | Dusk |
| Lowest Ceiling Height | 1200 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 9 |
| Air Temperature at event time (in degrees celsius) | 13 |
| Dew Point at event time (in degress fahrenheit) | 11 |
| Wind Direction (degrees magnetic) | 90 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.89 |
| Density Altitude (feet) | 837 |
| 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 | 70 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 14408 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jun 3 2002 12:00AM |
| NTSB Notification Time | 2245 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Nov 25 2003 11:36AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | FAA - Minneapolis CMO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N8986E |
| NTSB Number | CHI02FA148 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Douglas |
| Aircraft Model | DC-9-31 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 47402 |
| Certified Max Gross Weight | 108000 |
| 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 | 108 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | 75241.6 |
| 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 | 5101 Northwest Drive |
| Aircraft Owner City | St. Paul |
| Aircraft Owner State | MN |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 55111 |
| Operator is an individual? | No |
| Operator Name | -- |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | -- |
| Operator Zip code | -- |
| Operator Code | 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 |
| 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 | SDF |
| Departure City | Louisville |
| Departure State | KY |
| Departure Country | USA |
| Departure Time | 1836 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | MSP |
| Destination City | Minneapolis |
| Destination State | MN |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | Yes |
| Evacuation occurred | No |
| Date of most recent change to record | Oct 17 2003 8:09AM |
| User who most recently changed record | SULP |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 12 |
| Runway Length | 8200 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |