Just beyond Heathrow Terminals NUMBER@1 , NUMBER@2 , NUMBER@3 tube station , the line goes into a new section to serve Heathrow Terminal NUMBER@4 tube station , which opened in March NUMBER@5 .

Just after Heathrow Terminals NUMBER@1 , NUMBER@2 , NUMBER@3 tube station , the line will go into a new section to serve Heathrow Terminal NUMBER@4 tube station , which is being built .
