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55 APPENDIX A Lightning Events Data Appendix A presents the data obtained from the NLDN and used to produce a synthetic lightning duration scenario for the two case study airports--Chicago-O'Hare International (ORD) and Orlando International (MCO), as described more fully in Chapter 3. The data depict the start and end times of lightning events during a full-year period based on the "30/30" rule (Table A-1 and Table A-2), and for the summer months when considering a "30/15" adaptation (Table A-3 and Table A-4). These data were then evaluated to generate per-minute cost savings that can potentially be achieved by reducing the time interval between stopping and resuming aircraft ramp activities.

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56 Table A-1. ORD 2006 30/30 lightning events. Date Start End Duration (min) 1/2/2006 11:02 AM 11:47 AM 45 1/2/2006 12:45 PM 1:15 PM 30 1/2/2006 2:14 PM 2:44 PM 30 2/16/2006 10:34 AM 12:45 PM 131 2/16/2006 1:48 PM 3:10 PM 82 3/8/2006-3/9/2006 11:26 PM 12:30 AM 64 3/12/2006 6:40 PM 7:55 PM 75 3/12/06 - 3/13/06 11:50 PM 1:11 AM 81 3/13/2006 1:50 AM 2:10 AM 30 4/2/2006 7:58 PM 9:00 PM 62 4/2/2006 9:19 PM 10:02 PM 43 4/13/2006 10:41 PM 11:11 PM 30 4/14/2006 9:59 AM 10:29 AM 30 4/16/2006 1:27 PM 1:57 PM 30 5/17/2006 5:07 PM 6:17 PM 70 5/24/2006 9:10 AM 9:40 AM 30 5/24/2006 9:33 PM 10:22 PM 49 5/25/2006 8:26 AM 8:56 AM 30 5/29/2006 4:40 PM 6:26 PM 106 5/30/2006 3:43 PM 4:20 PM 37 5/30/2006 4:58 PM 5:20 PM 30 5/30/2006 7:31 PM 9:15 PM 94 6/21/2006 5:35 PM 6:05 PM 30 6/22/2006 9:08 AM 10:19 AM 71 6/25/2006 3:27 PM 3:57 PM 30 6/25/06-6/26/06 11:17 PM 2:53 AM 206 6/26/2006 11:54 AM 12:31 PM 42 6/26/2006 12:51 PM 1:36 PM 45 6/28/2006 6:24 AM 8:32 AM 128 6/28/2006 9:00 PM 9:51 PM 51 7/3/2006 4:50 AM 5:26 AM 36 7/3/2006 7:09 AM 7:41 AM 32 7/14/2006 3:34 AM 4:14 AM 40 7/17/06 - 7/18-06 10:33 PM 12:38 AM 125 7/20/2006 4:03 AM 5:44 AM 101 7/20/2006 6:20 AM 6:50 AM 30 7/20/2006 7:35 AM 10:03 AM 148 7/20/2006 10:35 AM 12:28 PM 113 7/22/2006 6:38 PM 7:08 PM 30 7/27/2006 4:50 PM 5:20 PM 30 7/30/2006 12:21 PM 1:02 PM 41 8/2/2006 6:16 PM 6:46 PM 30 8/2/06 - 8/3/06 6:56 PM 12:00 AM 304 8/3/2006 5:18 AM 6:05 AM 47 8/10/2006 9:34 AM 10:04 AM 30 8/24/2006 5:04 AM 7:05 AM 121 8/24/2006 7:11 AM 8:41 AM 90 8/24/2006 9:03 AM 9:33 AM 30 9/11/2006 4:40 AM 5:10 AM 30 9/11/2006 8:27 AM 9:33 AM 54 9/12/2006 2:50 AM 3:20 AM 30 9/12/2006 4:46 PM 5:26 PM 40 9/13/2006 3:56 AM 4:26 AM 30 9/17/2006 5:26 PM 6:10 PM 44 9/22/2006 4:48 PM 6:50 PM 122 9/30/2006 1:31 PM 2:12 PM 41 9/30/2006 7:00 PM 7:30 PM 30 10/2/2006 1:04 PM 2:17 PM 73 10/2/2006 2:22 PM 2:52 PM 30 10/2/2006 4:01 PM 4:31 PM 30

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57 Table A-1. (Continued). Date Start End Duration (min) 10/2/2006 7:42 PM 11:45 PM 243 10/3/2006 12:13 AM 1:02 AM 49 10/4/2006 5:25 AM 5:55 AM 30 10/21/2006 6:45 PM 7:15 PM 30 11/10/2006 4:41 PM 6:24 PM 103 11/10/2006 6:51 PM 7:21 PM 30 11/29/2006 9:42 AM 10:33 AM 49 11/29/2006 10:41 AM 11:11 AM 30 Total Delay 4,308

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58 Table A-2. MCO 2006 30/30 lightning events. Date Start End Duration (min) 1/13/2006 9:50pm 10:48pm 58 2/3/2006 11:42AM 12:12pM 30 2/3/2006 12:47pm 1:19pm 32 2/3/2006 3:35pm 4:05pm 30 2/3/2006 6:39pm 7:09pm 30 2/3/2006 9:27pm 10:05pm 38 2/3/2006 10:22pm 10:52pm 30 2/4/2006 5:23am 6:22am 59 2/4/2006 10:39am 12:02pm 83 2/4/2006 2:04pm 2:34pm 30 4/9/2006 4:23am 5:13am 50 4/9/2006 6:27am 10:04am 217 4/21/2006 8:57pm 10:19pm 82 4/22/2006 7:37pm 8:18pm 41 4/22 - 4/23/06 11:52pm 12:24am 42 5/9/2006 12:10pm 12:40pm 30 5/11/2006 5:49pm 6:35pm 46 5/12/2006 2:46am 4:41am 115 5/25/2006 9:27pm 9:57pm 30 5/26/2006 9:12pm 9:42pm 30 5/26 - 5/27/06 10:03pm 12:19am 136 5/28/2006 8:54pm 11:00pm 126 6/1/2006 5:06pm 6:29pm 83 6/2/2006 10:27pm 10:57pm 30 6/4/2006 7:38pm 8:27pm 49 6/04 - 05/06 10:32pm 12:12am 100 6/6/2006 2:38am 3:08am 30 6/11/2006 5:54pm 6:24pm 30 6/12/2006 4:02pm 4:32pm 30 6/12/2006 4:40pm 5:29pm 49 6/13/2006 9:29am 9:59am 30 6/16/2006 8:51pm 9:28pm 37 6/20/2006 9:30pm 10:19pm 49 6/24/2006 5:38pm 7:36pm 118 6/24/2006 8:16pm 9:12pm 56 6/25/2006 7:18pm 10:12pm 174 6/26/2006 7:56pm 9:15pm 79 6/26/2006 10:14pm 11:12pm 58 6/27/2006 4:08pm 6:54pm 166 6/27/2006 9:03pm 10:35pm 92 6/27/2006 11:24pm 11:54pm 30 6/28/2006 7:03pm 7:33pm 30 6/28/2006 8:10pm 8:40pm 30 6/28-6/29/06 9:58pm 12:21am 143 6/29/2006 7:34pm 8:04pm 30 6/29/2006 8:17pm 9:07pm 50 7/1/2006 7:02pm 7:32pm 30 7/1/2006 7:46pm 8:28pm 42 7/2/2006 4:37pm 5:50pm 73 7/2/2006 6:41pm 7:23pm 42 7/3/2006 5:47pm 6:24pm 37 7/6/2006 10:10pm 11:30pm 80 7/7/2006 12:03am 12:47am 44 7/7/2006 5:13pm 7:49pm 156 7/11/2006 3:34pm 4:04pm 30 7/11/2006 7:12pm 7:42pm 30 7/12/2006 4:49pm 5:19pm 30 7/12/2006 6:18pm 6:53pm 35 7/16/2006 10:04pm 11:36pm 92 7/17/2006 5:46pm 9:34pm 228

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59 Table A-2. (Continued). Date Start End Duration (min) 7/18/2006 5:01pm 5:34pm 33 7/18/2006 6:17pm 7:58pm 101 7/19/2006 2:28am 4:48am 160 7/19/2006 5:22am 5:52am 30 7/20/2006 5:32pm 7:36pm 124 7/23/2006 6:58pm 9:17pm 139 7/24/2006 6:26pm 8:14pm 108 7/26/2006 8:16pm 10:18pm 128 7/27/2006 6:45pm 7:44pm 59 7/28/2006 4:48pm 5:28pm 30 7/28/2006 7:08pm 7:38pm 30 7/29/2006 8:25pm 10:02pm 97 7/30 - 7/31/06 11:07pm 12:59am 112 7/31/2006 2:12am 3:18am 66 7/31/2006 10:25pm 11:53pm 88 8/3/2006 9:39pm 11:49pm 130 8/4/2006 6:38pm 7:08pm 30 8/4/2006 7:25pm 8:07pm 42 8/4/2006 8:20pm 8:50pm 30 8/5/2006 7:54pm 8:30pm 36 8/13/2006 5:56pm 7:21pm 85 8/13/2006 8:01pm 9:50pm 109 8/15/2006 7:53pm 8:54pm 61 8/16/2006 8:23pm 8:53pm 30 8/17/2006 5:02pm 7:03pm 121 8/19/2006 2:28am 2:58am 30 8/19/2006 9:51pm 10:35pm 44 8/21/2006 7:18pm 8:55pm 97 8/21/2006 9:21pm 10:41pm 100 8/23/2006 8:16pm 9:03pm 47 8/23/2006 9:20pm 11:00pm 100 8/24/2006 5:10pm 7:30pm 160 8/25/2006 3:56pm 4:226pm 30 8/25/2006 6:06pm 6:43pm 37 8/26/2006 5:45pm 6:24pm 39 8/26/2006 9:47pm 11:58pm 131 8/27/2006 8:17pm 9:56pm 99 8/30/2006 1:39pm 2:09pm 30 8/30/2006 10:43pm 11:45pm 62 8/31/2006 5:11pm 5:48pm 37 9/1/2006 4:21pm 6:03pm 102 9/2/2006 8:17pm 9:28pm 71 9/2/2006 11:00pm 11:33pm 33 9/3/2006 7:12pm 8:00pm 48 9/4/2006 7:11pm 7:50pm 39 9/4/2006 10:17pm 10:54pm 37 9/06 - 9/07/06 10:24pm 1:08am 164 9/7/2006 7:14pm 9:17pm 123 9/8/2006 8:20pm 11:26pm 186 9/10/2006 6:52pm 7:30pm 38 9/14/2006 7:12pm 8:33pm 81 9/14/2006 9:09pm 9:42pm 33 9/14 - 9/15/06 11:36pm 1:02am 86 9/15 - 9/16/06 11:51pm 12:21am 30 9/19/2006 7:25pm 8:47pm 82 9/19/2006 9:25pm 9:55pm 30 9/19/2006 10:10pm 10:43pm 33 9/19/2006 11:07pm 11:40pm 33 9/26/2006 7:38pm 8:08pm 30 9/26/2006 8:12pm 9:10pm 58 (continued on next page)

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60 Table A-2. (Continued). Date Start End Duration (min) 10/07 10/08/06 11:55pm 2:00am 125 11/7/2006 10:43pm 11:19pm 36 11/16/2006 7:32am 8:02am 30 11/16/2006 10:51am 11:21am 30 12/23/2006 12:52am 1:28am 36 12/25/2006 6:15pm 7:29pm 74 Total Delay 8,577 Table A-3. ORD 2006 30/15 summer lightning events. Date Start End Duration (min) 6/21/2006 5:35 PM 5:50 PM 15 6/22/2006 9:09 AM 10:04 AM 55 6/25/2006 3:27 PM 3:42 PM 15 6/25/2006 - 6/26/2006 11:17 PM 2:38 AM 201 6/26/2006 11:54 AM 12:22 PM 28 6/26/2006 12:51 PM 1:21 PM 30 6/28/2006 6:24 AM 6:39 AM 15 6/28/2006 6:57 AM 8:17 AM 80 7/3/2006 4:50 AM 5:11 AM 21 7/3/2006 7:09 AM 7:24 AM 15 7/14/2006 3:34 AM 3:58 AM 24 7/17/2006 10:33 PM 11:56 PM 81 7/18/2006 12:08 AM 12:23 AM 15 7/20/2006 4:03 AM 4:19 AM 16 7/20/2006 4:45 AM 5:19 AM 34 7/20/2006 6:20 AM 9:49 AM 209 7/20/2006 10:39 AM 12:13 PM 98 7/20/2006 4:50 PM 5:05 PM 15 7/20/2006 6:38 PM 6:53 PM 15 7/28/2006 9:01 PM 9:36 PM 35 7/30/2006 12:21 PM 12:37 PM 16 8/2/2006 6:16 PM 6:31 PM 15 8/2/2006 6:56 PM 11:45 PM 289 8/3/2006 5:18 AM 5:50 AM 32 8/10/2006 9:34 AM 9:49 AM 15 8/24/2006 5:05 AM 6:50 AM 105 8/24/2006 7:12 AM 8:16 AM 64 8/24/2006 9:03 AM 9:18 AM 15 Total Delay 1,568

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Table A-4. MCO 2006 30/15 summer lightning events. Date Start End Duration (min) 6/1/2006 5:09p 6:04p 55 6/2/2006 10:27p 10:42p 15 6/4/2006 7:39p 8:12p 33 6/4/2006 10:32p 11:58p 86 6/6/2006 2:38a 2:53a 15 6/11/2006 5:54p 6:09p 15 6/12/2006 4:06p 4:18p 12 6/12/2006 4:40p 5:14p 34 6/13/2006 9:29a 9:44a 15 6/16/2006 8:51p 9:14p 23 6/20/2006 9:30p 9:54p 24 6/24/2006 5:38p 7:21p 33 6/24/2006 8:16p 8:58p 42 6/25/2006 7:19p 9:56p 157 6/26/2006 7:56p 9:00p 64 6/26/2006 10:13p 10:57p 44 6/27/2006 4:08p 6:39p 121 6/27/2006 9:03p 10:20p 77 6/27/2006 11:25p 11:40p 15 6/28/2006 7:03p 7:18p 15 6/28/2006 8:10p 8:25p 15 6/28 - 6/29/06 10:20p 12:06a 106 6/29/2006 7:34p 7:49p 15 6/29/2006 8:16p 8:52p 36 7/1/2006 7:02p 7:17p 15 7/1/2006 7:46p 8:03p 17 7/2/2006 4:37p 4:52p 15 7/2/2006 5:11p 5:35p 24 7/2/2006 6:41p 7:09p 28 7/3/2006 5:47p 6:09p 22 7/6/2007 10:10p 11:15p 75 7/7/2006 12:03a 12:32a 29 7/7/2006 5:13p 5:28p 15 7/7/2006 5:44p 6:15p 39 7/7/2006 7:08p 7:34p 26 7/11/2006 3:35p 3:50p 15 7/11/2006 7:13p 7:28p 15 7/12/2006 4:50p 5:05p 15 7/12/2006 6:18p 6:38p 20 7/16/2006 10:04p 11:21p 77 7/17/2006 5:46p 9:20p 214 7/18/2006 5:01p 5:20p 19 7/18/2006 6:17p 6:32p 15 7/18/2006 6:50p 7:43p 53 7/19/2006 2:28a 3:38a 70 7/19/2006 4:03a 4:33a 30 7/19/2006 5:22p 5:37p 15 7/20/2006 5:32p 7:21p 109 7/23/2006 6:58p 9:02p 124 7/24/2006 6:26p 7:59p 93 7/26/2006 8:17p 10:03p 106 7/27/2006 6:45p 7:19p 34 7/28/2006 4:57p 5:14p 17 7/28/2006 7:08p 7:23p 15 7/29/2006 8:25p 9:47p 82 7/30 - 7/31/06 11:07p 12:44a 97 7/31/2006 2:13a 3:03a 50 7/31/2006 9:43p 9:58p 15 7/31/2006 10:25p 11:38p 73 8/3/2006 9:40p 10:18p 38 (continued on next page)

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62 Table A-4. (Continued). Date Start End Duration (min) 8/3/2006 11:05p 11:35p 20 8/4/2006 6:38p 6:53p 15 8/4/2006 7:24p 7:52p 28 8/4/2006 8:20p 8:35p 15 8/5/2006 7:54p 8:15p 21 8/13/2006 5:56p 7:06p 70 8/13/2006 8:01p 8:25p 24 8/13/2006 8:42p 9:35p 53 8/15/2006 7:54p 8:09p 15 8/15/2006 8:24p 8:39p 15 8/17/2006 5:02p 6:49p 93 8/19/2006 2:28a 2:47a 19 8/19/2006 9:51p 10:21p 30 8/21/2006 7:18p 8:41p 83 8/21/2006 9:01p 10:34p 93 8/23/2006 8:17p 8:58p 41 8/23/2006 9:20p 10:45p 85 8/24/2006 5:10p 7:15p 125 8/25/2006 3:56p 4:11p 15 8/25/2006 6:06p 6:29p 23 8/26/2006 5:45p 6:09p 24 8/26/2006 9:47p 11:43p 116 8/27/2006 8:17p 9:42p 85 8/30/2006 1:39p 1:54p 15 8/30/2006 10:43p 11:30p 47 8/31/2006 5:11p 5:34p 23 Total Delay 3,976