Flight SWA 1455 Case Study Workbook - Center for Air ...

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The captain stated to Safety Board investigators that after touchdown, the end ofthe runway appeared to be closer than it should have been and that he thoughtthey might hit the blast fence wall. The captain indicated that he braked .prettygood. while attempting to stop the airplane. FDR data indicate that the captainunlocked the thrust reversers 3.86 seconds after touchdown and that the thrustreversers deployed 4.91 seconds after touchdown. The first officer stated toinvestigators that the captain applied the wheel brakes be<strong>for</strong>e the airplane haddecelerated to 80 knots15 and that, as the airplane passed the Southwest <strong>Air</strong>linespassenger boarding gates,16 he joined the captain in braking the airplane andapplied the brakes as hard as he could. The captain indicated that as theairplane neared the end of the runway, he initiated a right turn using only thenosewheel steering tiller (not the rudder pedals).15. What mechanisms are used to brake an aircraft on the ground? Explainhow each mechanism causes the airplane to decelerate? Are there anyrestrictions on using each mechanism?16. What is a nosewheel steering tiller? When is it used? Who uses it?At 1811:20, the cockpit area microphone (CAM) recorded impact sounds. Theairplane departed the right side of the runway about 30° from the runway heading,Copyright Lance Sherry 200934
penetrated a metal blast fence and an airport perimeter wall, and came to a stopon a city street off of the airport property. An emergency evacuation ensued, andall crewmembers and passengers successfully exited the airplane.17. Why was the aircraft steered to “the right side of the runway about 30°from the runway heading.” ?Copyright Lance Sherry 200935
Page 1 and 2: SYST 560/660OR 750Spring 2009Center
Page 3 and 4: Reason’s Swiss Cheese Accident Mo
Page 5 and 6: is magnified. In a sense then, the
Page 7 and 8: Topographical Map of Surrounding Te
Page 9 and 10: Prevailing Wind Direction:STATION|
Page 11 and 12: Runway 8/26Dimensions: 5801 x 150 f
Page 13 and 14: 6. Precision Approach Path Indicato
Page 15 and 16: Runway Safety AreasTitle 14 CFR 139
Page 17 and 18: Copyright Lance Sherry 200917
Page 19 and 20: 4. What is an EMAS and how does it
Page 21 and 22: Approach Charthttp://204.108.4.16/d
Page 23 and 24: Las Vegas to Burbank RouteSouthwest
Page 25 and 26: 7. When the aircraft passed over PM
Page 27 and 28: 1. What is the Approach Control Fre
Page 29 and 30: At 1808:19, the Woodland controller
Page 31 and 32: 5. What are “speed brakes” (als
Page 33: 11. Why is it significant that the
Page 37 and 38: . How much altitude (feet) higher w
Page 39 and 40: “Swiss Cheese” Model Analysis f

Flight SWA 1455 Case Study Workbook - Center for Air ...

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