Hello, I have downloaded the latest AIRAC (2101). On the Ident-page of my FMC (PMDG B738) it says: ‘AIRAC - 2101 JAN28FEB25/21’. However the FMC still gives the message ‘NAV DATA OUT OF DATE’. Please advise. Never had such an issue before.

AIRAC 2101 installed but not recognized in PMDG FMC (B738)

srcooke January 29, 2021, 11:24am 2

Answered in the FAQ

Most likely you are loading a saved situation outside the valid airac period.

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