Thank you for the offer, 120.4. Hopefully we can get a 'concensus'?
C'mon then, lets be 'aving you... All drivers in favour of operating their type at 170kts to 5d speak up now. If there is clear consensus that on balance that is a more suitable "standard" then I'll raise it with Ops. (They will want to do some maths to make sure the risk of catch-up inside 4 isn't significantly greater with different types before they promulgate it the standard. Of course that doesn't stop us using it on our own initiative so long as we continue to separate aircraft by the minima.)
It is time to speak up or shut up.
.4