Los Angeles Intl Airport
Aircraft Accident/Incident Report

Los Angeles, California 90009
Monday, December 19, 2005 20:30 PST

NTSB Narrative Summary Released at Completion of Accident

The four right main body landing gear tires burst during the takeoff ground roll, and the crew performed a precautionary landing. Pieces of the tires and wheel assemblies penetrated the fuselage structure and the airplane incurred substantial damage. Post accident examination revealed that the valve cores on three of the four inflation valves, including the two aft valves, were not torqued to the manufacturer's specifications and leaked steadily. Examination of the right aft main body landing gear tires (number 11 and 12) showed that they were operated in an over deflected condition at some point prior to the event, which resulted in internal damage to the tires. The aft tires failed first as a result of the internal damage and initiated the accident sequence. Damage to the forward tires was consistent with the tires bursting due to their impact by debris from the aft tires.

NTSB Probable Cause Narrative

the incorrect installation of the inflation valve cores in the number 11 and number 12 wheel assemblies that allowed the tires to be operated in an over deflected condition that resulted in their failure.

Event Information

Type of Event Accident
Event Date 12/19/2005
Event Day of the Week Monday
Time of Event 2030
Event Time Zone Pacific Standard Time
Event City Los Angeles
Event State CALIFORNIA
Event Country --
Zipcode of the event site 90009
Event Date Year 2005
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 335633N
Event Location Longitude 1182448W
Event Location Airport Los Angeles Intl
Event Location Nearest Airport ID KLAX
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 126
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 2050 Pacific Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID LAX
Elevation of weather observation facility 126
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation PST
Lighting Conditions Night
Lowest Ceiling Height --
Lowest Non-Ceiling Height 10000
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) 9
Air Temperature at event time (in degrees celsius) 17
Dew Point at event time (in degress fahrenheit) 16
Wind Direction (degrees magnetic) 260
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.25
Density Altitude (feet) --
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 273
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 21107
NTSB Notification Source FAA
NTSB Notification Date Dec 19 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 26 2007 9:33AM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-LAX-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number VT-AIM
NTSB Number LAX06FA063
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 129: Foreign
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Boeing
Aircraft Model 747-400
Aircraft Series Identifier --
Aircraft Serial Number 25074
Certified Max Gross Weight 869999
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 317
Number of Engines 4
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Dec 1 2005 12:00AM
Airframe hours since last inspection 54055
Airframe Hours 54356
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Wells Fargo Bank Northwest, National Association
Aircraft Owner Street Address --
Aircraft Owner City New York
Aircraft Owner State NY
Aircraft Owner Country USA
Aircraft Owner Zipcode 10020
Operator is an individual? No
Operator Name Air India
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address Air - India Building Nariman Point
Operator City Mumbai - 400 021
Operator State --
Operator Country IN
Operator Zip code --
Operator Code AINY
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 International
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 LAX
Departure City Los Angeles
Departure State CA
Departure Country USA
Departure Time 2030
Departure Time Zone PST
Destination Same as Local Flt --
Destination Airport Code FRA
Destination City Frankfurt
Destination State --
Destination Country GE
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 30 2007 4:26PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location 25R
Runway Length 12091
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --