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Luis Oswaldo Bethencourt

OPT Flight level

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Luis Oswaldo Bethencourt

Hi there. Long time !

Hey, i've realized that since the release of the v5.0 of the A320 - and the A321 for that matter- the OPT Flight Level indicated by the MCDU in the PROG page is initially quite low, on the FL250's in the A321 and FL310's on the A320 while I am on the ground. Then once I take off, this value ramps up VERY VERY  rapidly to higher - more normal- values. This didnt happen in earlier versions of the bus.

Is this behavior normal?

I am taking off the bus at some heavy weights, 60 61tons of zfw on the 320 and 69 - 70 tons on the 321. I understand things might be weird these hot days, but I spotted this "feature" about a month ago.

 

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Luis Oswaldo Bethencourt

Tough one, aint it ? :D

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Sachin Gnath

Luis, 

Is the change occurring when you fly in OP Climb Mode after take off? Because normally AFAIK if you choose OP Climb mode then the MCDU will disregard the SID constraints as a result it will give you a higher OPT CRZ Flight Level during the climb. 

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