Hi, if you have a look on a satellite map of the stands you’ll see that 514 and 516 seem to clash with the other stands either side of them. This is because they can be used for wide-bodies if the others aren’t occupied. For example, 516 can take 1 wide-body when 515 and 517 are empty. 515 and 517 can take a narrow-body each when 516 remains empty. The same applies for 514, I believe. It’s also interesting to note that 515 is the only stand to not include a “node”, presumably to help fit those wide-bodies on 514 and 516 when not in use. However, only 518 seems to be used for wide-bodies in T5A these days.