Individually Owned: 151,845
Corporate Owned: 143,699
Stapleton International Airport
Aircraft Accident/Incident Report
Denver, Colorado 80207
Tuesady, April 27, 1993 17:28 MDT
NTSB Narrative Summary Released at Completion of Accident
FOLLOWING TOUCHDOWN A LANDING GEAR VIBRATION OCCURRED WHICH LED TO A COLLAPSE OF THE RIGHT MAIN LANDING GEAR AT 117 KNOTS. THE RIGHT WING CONTACTED THE RUNWAY AND THE AIRPLANE SKIDDED TO A STOP ON THE RUNWAY AS IT ENTERED THE OVERRUN. DURING THE ENSUING EMERGENCY EVACUATION TWO PASSENGERS SUSTAINED MINOR INJURIES. EXAMINATION OF APPLICABLE COMPONENTS DID NOT PROVIDE A SPECIFIC CAUSE FOR THE VIBRATION THAT LED TO THE COLLAPSE. THREADS ON THE RIGHT GEAR APEX BOLT FAILED RESULTING IN THE GEAR'S 90 DEGREE ROTATION AND THE SUBSEQUENT OVERLOAD COLLAPSE. THE GROUND SPOILERS DID NOT ACTIVATE AND THE CREW STATED THAT THEY HAD ARMED AUTO SPOILERS. THE MANUFACTURER REPORTED THAT THERE HAVE BEEN A TOTAL OF THREE SIMILAR NON-FLIGHT TEST OCCURRENCES. IN ALL THREE EVENTS THE GROUND SPOILERS DID NOT EXTEND.
NTSB Probable Cause Narrative
A VIBRATION IN THE RIGHT MAIN LANDING GEAR, FOR UNDETERMINED REASONS, WHICH RESULTED IN COLLAPSE OF THE RIGHT MAIN GEAR. A FACTOR WAS FAILURE OF THE PILOT IN COMMAND TO ENSURE DEPLOYMENT OF THE GROUND SPOILERS.
Event Information
| Type of Event | Accident |
| Event Date | 4/27/1993 |
| Event Day of the Week | Tuesday |
| Time of Event | 1728 |
| Event Time Zone | Mountain Daylight Time |
| Event City | DENVER |
| Event State | COLORADO |
| Event Country | -- |
| Zipcode of the event site | 80207 |
| Event Date Year | 1993 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | STAPLETON INTERNATIONAL |
| Event Location Nearest Airport ID | DEN |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 5333 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1731 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 30 |
| Weather Observation Facility ID | DEN |
| Elevation of weather observation facility | 5333 |
| Distance of event from weather observation facility (units?) | 1 |
| Time Zone of the weather observation | MDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 6500 |
| Lowest Non-Ceiling Height | 6500 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 50 |
| Air Temperature at event time (in degrees celsius) | 17 |
| Dew Point at event time (in degress fahrenheit) | 2 |
| Wind Direction (degrees magnetic) | 120 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 16 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 6300 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 2 |
| Injury Total None | 119 |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 796 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 27 1993 12:00AM |
| NTSB Notification Time | 1815 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 11 2000 1:14PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N72822 |
| NTSB Number | DEN93FA049 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | MCDONNELL DOUGLAS |
| Aircraft Model | DC-9-82 |
| Aircraft Series Identifier | DC-9-82 |
| Aircraft Serial Number | 49482 |
| Certified Max Gross Weight | 142000 |
| 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 | 150 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Apr 1 1993 12:00AM |
| Airframe hours since last inspection | 252 |
| Airframe Hours | 21572 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | CONTINENTAL AIRLINES |
| Aircraft Owner Street Address | 2929 ALLEN PARKWAY |
| Aircraft Owner City | HOUSTON |
| Aircraft Owner State | TX |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 77210 |
| Operator is an individual? | -- |
| 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 | CALA |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| 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) | Unknown |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | SFO |
| Departure City | SAN FRANCISCO |
| Departure State | CA |
| Departure Country | |
| Departure Time | 1515 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:30AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 26R |
| Runway Length | 8599 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |