Flying an aircraft at greater than 150 KIAS in a visibility of 3 km in class G
Flying an aircraft within 1000 ft of a cloud layer while above 3000 ft amsl in class G
bookworm thank you
Having now re-checked: Mandatory IFR in airspace Class A, B, C, D & E was
not allowed but, as you point out, in Class G (&F) it was.