Try 15 seconds or less. Not a hard and fast rule, but anything beyond that is a little weird unless you're having some sort of problem.How about Descent Clearances.... I know the ICAO states say that the descent must started within 2 mins.... However, my experience that it needs to be done within one minute or less before ATC gives us a second reminder!
Is it fair to say One min or less is the standard convention?
500 feet per minute is considered the standard for the climb or descent. If you can't maintain that you're supposed to advise ATC.Guys another question regards to Rates of Descent...
Flying into the busy airspace in and around JKF, EWR, BOS, ORD and LAX... what Rate of Descent would ATC like from us Heavies?