Bag 6 starts the airport terminal. Like most CITY builds, they are meant for play so it's really only half a building. It includes one minifigure and the revolving door entrance. While the entrance is cool looking, it's about twice the height of a minifigure and there isn't enough physical space for one actually to fit through the door. I'm not a fan of the design.
There are 3 cardboard boxes with more Easter eggs. We get a few references to Marvel organisations such as A.I.M., who you may remember from Iron Man 3 as an R&D agency run by Aldrich Killian, Hammer, one of Stark Industries primary rivals which made an appearance in Iron Man 2, bankrolling Whiplash and finally a box with the Stark Industries logo on it.
Stickers are used for decorations for the outside of the plane. I like how the stickers for the outside match colours with the piping on the plane. I found the sticker for the top of the door to be a little big; if you line up the orange on the bottom of the stickers with the orange on the plane the sticker overlaps a bit at the top. The stickers for the nose of the plane are not as difficult to apply as I thought they would be. They do seem a bit superfluous, though they do make the plane look nice. The plane is finished with the tail fin, that uses yet more stickers. It is interesting that this plane actually uses more stickers than the Friends plane does.
If you don’t own Black Panther Pursuit or any of the sets that included Captain America, I guess it would a plus getting the both of them in this set but Super Heroes collectors tend to be completionists, so I think that scenario will be particularly rare. I guess you could always sell your spares on the secondary market, but really, who wants to do that?
City is the thematic title under which most Town-related System sets were released from 2005 and onward. There are numerous sets that are associated with Construction, Police, Fire, Emergency, Train, Airport, Transportation, Cargo, Traffic, Coast Guard, Farm, Great Vehicles, Mining, and Space. European catalogs featured another theme called City in the years 1999 to 2000, which was referred to as City Center in American catalogs.
From mid-2009, the airport was served by 9 airlines flying regular flight service, of which KLM had the busiest route with over 200,000 annual passengers to Amsterdam Schiphol. In 2011, Ryanair announced that Billund Airport with effect from 25 March 2012 would be the base for two Boeing 737 aircraft. At the same time Ryanair published 5 new routes, so that, from the summer of 2012, they would fly to 19 destinations.
Billund Airport had its beginning in 1961 when the son of the founder of the Lego Group, Godtfred Kirk Christiansen, established a private 800-meter long runway and hangar north of his factory in Billund. With Christiansen as a key driver, more of the neighbouring municipalities were included in the group of owners, and it was planned that the airport should be expanded to a regular public airport.