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Southwest Airlines 1248

Printed page 32. PDF page 44.

Pinnacle had incorporated an arrival landing distance assessment 56 The FAA-advocated minimum safety margin of 15 percent was established based on historic links to the FAA-mandated additional 15 percent factor for wet/slippery dispatch requirements and the 15 percent fa
Open official document at PDF page 44Runway Overrun and Collision, Southwest Airlines Flight 1248

Southwest Airlines 1248

Printed page 33. PDF page 45.

documentation states, "When landing on a contaminated runway, the landing runway must have a minimum safety margin of 15 percent available length beyond the calculated landing distance. The landing distance must take into account the actual runway conditions existing at
Open official document at PDF page 45Runway Overrun and Collision, Southwest Airlines Flight 1248

Southwest Airlines 1248

Printed page 55. PDF page 67.

conditions, expected deceleration means, and airplane configuration, and including a minimum safety margin of 15 percent when landing on a contaminated runway. National Transportation Safety Board 55
Open official document at PDF page 67Runway Overrun and Collision, Southwest Airlines Flight 1248

Southwest Airlines 1248

Printed page 56. PDF page 68.

should be performed or specify a safety margin that should be applied. The FAA-advocated minimum safety margin of 15 percent for arrival landing distance assessments published in SAFO 06012 is based on historic links to the FAA-mandated additional 15 percent
Open official document at PDF page 68Runway Overrun and Collision, Southwest Airlines Flight 1248

Southwest Airlines 1248

Printed page 57. PDF page 69.

surface conditions using the most conservative interpretation available, and including a minimum safety margin of 15 percent. The Board recognizes that development of such a standardized methodology will take time. Therefore, the Safety Board further believes that, until a
Open official document at PDF page 69Runway Overrun and Collision, Southwest Airlines Flight 1248

Southwest Airlines 1248

Printed page 68. PDF page 80.

every landing based on existing performance data, actual conditions, and incorporating a minimum safety margin of 15 percent. (A-07-57) Urgent (Supercedes Safety Recommendation A-06-16 and classified "Open--Unacceptable Response.") Require all 14 Code of Federal Regulations
Open official document at PDF page 80Runway Overrun and Collision, Southwest Airlines Flight 1248