737-100/200 VMO/MMO
Hi all
I recently bought a 1968 737 operations manual off ebay. I came across something interesting regarding VMO/MMO. In this manual it says that "VMO indicated ranges from 350 knots at sea level to 367 knots at 23,456 feet and then transitions to 0.84M". I always taught that it was just 350/.84 and nothing more. I'm just wondering if Boeing decided to make the VMO of 350 standard all the way to 0.84M or did the FAA's certification rules change at some stage.
I would also be intrested to know why the 300-900 is limited to 340/.82.
Thanks in advance.