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Unexpected change of CRZ FL when changing climb speed?

737Andi
in PMDG 737NGX | 737NGXu

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Hi,

I was wondering if anyone has an explanation for this observation that I made in my sim on my flight from EBBR to EGLL.
I have used the PMDG 737 NGXu for this short trip.

The final CRZ FL was set to 180. The Target Speed on the CLB page was automatically set in ECON mode to 303kn.
During climb I changed the target Speed on the CLB page from 303kn to 330kn via the scratchpad while in economy mode.

The new speed was successfully set. However at the same time my flight level was automatically set to FL 250 !
And I was not able to change this higher FL back to 180 during the rest of the flight. CRZ mode was never activated and I came directly into descent mode 

Any ideas what went wrong here?

Thank you!

Best regards Andi

Edited by 737Andi

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