Originally Posted by
ManaAdaSystem
In LHR they send you a letter if you fly a level segment before you intercept the glide. (Don’t ask me how I know ��) You may use a ROD down to 300 fpm to avoid this. Less than 300 fpm is considered level flight.
To the OP:
If you are cleared an altitude and also cleared approach, you should descend towards this altitude, not level off.
A level off at any other altitude may cause issues when you fly into airports with parallel approaches and two aircraft vectored for approach to different runways.
Follow the instructions from ATC. Easy!
If You are talking about CDA :
no segment of level flight longer than 2.5 nautical miles (nm) occurs below
6000ftQNH and ‘level flight’ is interpreted as any segment of flight having a height change of not more than 50ft over a track distance of 2 nm or more.
Hence, even 100 ft/min will work at typical terminal speeds.