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Runway Overrun

Runway Overrun. Learjet 60, N999LJ Global Exec Aviation Columbia, South Carolina September 19, 2008. History of Flight. Departure before midnight Back-taxied length of runway Captain misstated rejected takeoff (RTO) criteria Initial takeoff roll normal First officer made airspeed call

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Runway Overrun

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  1. Runway Overrun Learjet 60, N999LJGlobal Exec AviationColumbia, South CarolinaSeptember 19, 2008

  2. History of Flight • Departure before midnight • Back-taxied length of runway • Captain misstated rejected takeoff (RTO) criteria • Initial takeoff roll normal • First officer made airspeed call • Loud rumbling sound

  3. History of Flight • First officer called to continue • Captain reduced power, wavered • Committed to high-speed RTO • Fragments of all main landing gear tires found on runway • All main landing gear tires underinflated

  4. History of Flight • Stopping capability compromised • Damage caused logic to switch to “air” mode • Reversers automatically stowed • High forward thrust • Captain commanding reverse thrust • Recommendations A-09-55 through -60

  5. Simplified Event Overview V1 call Loud sound

  6. Simplified Event Overview Reversers deployed, speed decreasing

  7. Simplified Event Overview High forward thrust Reversers stow Wreckage

  8. Safety Issues • Aircraft tire maintenance, inflation • Flight crew performance • High-speed RTO • Captain’s experience • Flight crew training for tire failures • Crew resource management (CRM) • Thrust reverser design deficiencies • Inadequate system safety analyses • Certification of changed aeronautical products • Tire certification criteria

  9. Parties to the Investigation • Federal Aviation Administration • Global Exec Aviation • Learjet • Goodyear Tire & Rubber • Columbia Metropolitan Airport

  10. Other Participants • Transportation Safety Board of Canada • Pratt & Whitney Canada • South Carolina Highway Patrol • Federal Bureau of Investigation • National Highway Traffic Safety Administration

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