Nice reply, I expected no less from you.
Yip that's a fair call. I wouldn't have said that to your face so I shouldn't have said it here. I apologise.
I don't think anyone is disputing that the system defaults to 240kts. Certainly not me.
the system defaults to 240kts below 10K in VNAV. If you bust 250kts below 10K, it will go to LVL CHG
The above statement is incorrect. The only time it will go to LVL CHG is if you get very slow, pretty much the opposite of the scenario you describe. It is possible that there are FMC logic variations floating about that I have not come across, if that is the case I'm standing by to learn something.
Again, apologies for being a rude grumpy pr1ck.