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Old 2nd Feb 2010, 23:51
  #2999 (permalink)  
bluepilot
 
Join Date: Aug 2004
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Cat III LBA

Someone questioned the CAT III capability at LBA re jet2. Let me put the record straight. Runway 32 is the only cat II /III runway avail at LBA, it has a hump on the touchdown zone followed by a downslope. The 737 series aircraft have an early form of autoland which is quite crude by modern standards which do not kick off drift etc (2 axis) and thump the aircraft at the runway, (works but crude) limited to cat IIIa operations. Later aircraft (Fokker F70/F100, B757/767, A320 series etc) have a 3 axis autoland system, much more complex and cat iiiB capable. However because the aircraft kick off drift and "feel" for the landing using the rad alt, with the hump and downslope on runway 32 there is a danger that the aircraft would float and land far too deep, therefore most operators ban autoland on these newer aircraft types at LBA. Just a quirk of the airfield i am afraid. Therefore Jet2 737s are catIII capable at LBA the 757s are not.
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