Real helpful 172. Just looking for any written reference that says a descent should be made at least 1000 FPM. If your at FL380 300 miles from your destination and ATC says Descend and maintain FL340. If I descend between 500 fpm and 1000 fpm and a check airman says I need to do at least 1000 fpm If I say show me where it says that, what is he gonna show me?