EFTA Surveillance Authority Decision No 221/15/COL of 3 June 2015 amending EFTA Surveillance Authority Decision No 83/15/COL concerning the consistency of certain targets included in the national or functional airspace block plans submitted pursuant to Regulation (EC) No 549/2004 of the European Parliament and of the Council with the Union-wide performance targets for the second reference period [2016/1420]