Descent speeds
My line check Captain was talking about ATC 'expected' descent speeds.
We normally descend at cruise Mach until c/over to IAS and then the FMC produces an IAS based on the 'Cost Index' and the speed can vary from 250kts to 320kts (737) depending on C Index.
Primarily a UK question but w/wide answers appreciated: is there a 'standard' descent IAS that you will expect?