Last one:
when LHR's capacity is stated as 498000 movements per year (I think), how is that calculated? Not on the basis of an arrival and a departure every minute from 06:00-23:00.
The limit of
480,000 ATMs per year is a planning constraint dating from the T5 decision. Here's how it works:
http://www.acl-uk.org/UserFiles/File...e%203%20v2.pdf