Gosh what about 'Vmo' on that aircraft?
What about it, Johnnyboy? Don't you know what it is?
What do you think the FAA Type Certificate Data Sheet says that it is? That's the certification standard for the airplane, you see: the legal pedigree and the document which allows it to exist. Are you familiar with a TCDS?
From the FAA, http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/73eb196d79951940862576e4006bca71/$FILE/A7ce.pdf
VMO (Max Operating) 230 knots 265 m.p.h. (IAS) Sea level to 21,800 ft.
MMO Above 21,800 ft. .52 mach
Vmo, 230 knots.
You were doing 250 knots in the descent (a 10,000 fpm descent, as I recall, with one engine that you believed was "
making metal" in the propeller governor. You remember the engine? The one you didn't shut down for fear of damaging the fuel pump, when you believed it was making metal--which would have destroyed the entire engine, incidentally). That engine. So there you were, in an airplane with a published Vmo of 230 knots, while you were doing 250.
Then again, you just told us the airplane does 245 knots "
all day long." 15 knots faster than Vmo. Interesting.
Read the TCDS. The link above is provided for you. Get back to us when you've figured out a way to backpeddle a little more.