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MCDU TOC Calculation


Sabretooth78

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On my current flight I noticed some error in the TOC calculation on the CLIMB PERF page:

 

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Not sure it's a big deal, but notice that it's predicting a much longer time and distance to TOC than the ND indicates (which is in fact much closer to the "EXPEDITE" info).  It was waffling a little during the later stages of the climb (to be expected, I'm sure) but shortly after I snapped this picture the time and distance rapidly decayed before the page changed to CRZ just before entering ALT*.

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  • 2 weeks later...

Here's another example:  KBOS N0453F360 PATSS5 PATSS NELIE CMK J75 GSO SLOJO Q75 TEUFL GEEYE JAYJA DADES6 KTPA

 

As can be clearly seen, the CLIMB PERF prediction is way off, especially in terms of the ETA given.

 

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