Perhaps, TS. It's a pretty big and unusual number though.
No Squawk. Not on oxygen.
Another BAK question the answer to which might be a clue to another potential factor: An aircraft is cruising at e.g. 9,500' and there is (hypothetically) ZERO wind. The pilot then trims for descent at an IAS equal to VNO. What happens to the aircraft's GS? Does the GS increase, decrease or stay the same?