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Old 2nd Jun 2008, 23:00
  #87 (permalink)  
alf5071h
 
Join Date: Jul 2003
Location: An Island Province
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Has anyone been able to check the landing distance available on 02? My earlier indication (#55) of 5410ft has not been validated. A quick glance at the airport chart could easily mistake the landing distance for the higher value (6190 ft) in each direction. Any operators into this airport able to confirm what distances are used in their planning documents.

If the behavior shown in the videos is the norm then these operators are breaking the rules. The displaced threshold appears to originate from the requirements of the obstacle clearance plane (type A chart) - the terrain on short finals. Thus, operators should respect the displaced threshold crossing altitude in order to reduce the risk of encountering terrain.
If the performance calculations are correct then the aircraft should still be capable of stopping in the remaining runway distance. An important aspect of these calculations is a correct assessment of wind, meeting the requirements of approach / touchdown speed, and achieving the assumed touchdown position.
Thereafter correct application of the brakes is assumed, which is not necessarily use of autobrake if the runway very wet or technically ‘slippery when wet’. In the latter case, normal ‘wet’ landing performance might not be valid, and contaminated runway data should be checked.
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