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Why would this DES be recommended


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Hi,

 

For the airway N850 there are no altitude restrictions (max FL660, min 14000) 

Winds are not more favourable at FL310, actually they seem to stay the same (CRZ at FL390)

Why would the program plan for that descent to FL310 ? Even during a segment where the MORA seems at its highest (170)

 

 

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Most likely a function programmed into PFPX giving an early descent, I cannot suggest what the criteria for this is and may or may-not be applied. At one time this was removed but made its way back in.

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