So, no you would ALWAYS respect the Barbers pole. ( unless you are too young to know what a Barbers pole is !! )
....true,never intend to deliberately exceed MMO,however the FAR 25 gives a .07 margin with i think a 1.5 G for an aircraft to be certified...so going into barber pole all the way to M.89 in a 1.5 G maneuver and you are still within the certifiaction envelope...no need to sh
in your pants either.
The barbers pole call was a bit tough though Nitpicker, I've spent my share of time hugging them with the power levers up in turbo props.
Me too however the older i get the slower i tend to fly...getting more and more economical in a sense