Ual1636 From , joined Dec 1969, posts, RR: Reply 1, posted (13 years 4 months 4 weeks 1 day 2 hours ago) and read 936 times:
The VS varies form aircraft to aircraft. Most airliners climb at about 1000fpm to 2000 fpm. It varies from airline to airline also. To figure out the time it takes to descend, just use simple math. If you descend at 2000 fpm from FL300 to 3000, it'll take 13.5 minutes.