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Old 20th Dec 2008, 01:34
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safetypee
 
Join Date: Dec 2002
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May be of interest, but air/surface temperature can affect auto-land performance near the runway, thus due to the late disturbance the performance can suffer.
A light wind, hot day, sun on runway creates thermals. So too for changes with type of surface – blacktop to concrete often found at the undershoot to runway transition.
Occasionally a vertical temperature variation – early morning / late evening can can also cause a disturbace.
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