Diversions as a percentage of Air Transport Movements at LBA and BRS 1997-2006
Here is the most recent batch of continuous historical data I can get. As a comparitor I've included the figures for Bristol (similar geography) over the same period. Both airfields purchased CatIII ILS systems on their westerly runways during the nineties. The reason for diversion is not specified, but in most cases it is wx.
LBA
% ATMs Divs
1997 0.88 25569 227
1998 0.34 25133 87
1999 0.21 25762 55
2000 0.46 28656 132
2001 0.36 28397 103
2002 0.29 28566 83
2003 0.19 29397 57
2004 0.10 31493 32
2005 0.13 35494 47
2006 0.14 37251 53
Bristol
% ATMs Divs
1997 0.71 31546 225
1998 0.29 33645 98
1999 0.53 34986 185
2000 0.51 36185 183
2001 0.39 40947 161
2002 0.26 45829 120
2003 0.19 49548 93
2004 0.14 56079 76
2005 0.11 61311 67
2006 0.13 65825 83
Both airfields have similar 'diversion rates' over the period. In both cases the trend is actual diversion totals down whilst over the same period ATMs up (although the magnitude of ATM growth at BRS far greater).
Interesting that Bristol doesn't recieve the flaming that LBA does over its weather record - despite the diversion rate being similar.