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Old 20th Sep 2017, 10:10
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barrow
 
Join Date: Jan 2007
Location: San Francisco, California, USA
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TLR Aerodata FLEX Thrust

Ground delay issued during taxi out, So pull over, shut em both down. Takeoff numbers were input at gate just prior to push, temp from ATIS 23 deg C Planned Flex 35 deg C. After approx 50 minutes we now get " Start em up, Taxi 24L full length" New atis report is now 25 deg C.

My question:

Do AeroData servers predicate the performance and flex temp on the OAT that is input into the FMS before the perf numbers are requested (23 c) ?
We also set ECS, TO-1,2,3, Anti Ice config, CLR, FOB and passenger count into the FMS prior to sending for perf numbers, so do trim, flap, flex temp, %mac, GW and speeds all come back predicated on OAT 23 C. If I now set OAT 25 C in thrust page, are the original perf numbers still valid? Specifically Flex temp?
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