Structurally, the plane model is sound and very well-built. A little too well-built in some areas you would say, but they are necessary measures like the awkward humps in the interior of the plane you will discover. Space is very wisely used in this model as they’ve managed to fit a proper looking cockpit for 2 pilots and even managed to squeeze in a sink, a mini-bar with the one drink, seats for 6 more passengers and even a tight little space of a washroom. That door hinge though, is a work of art.

@josekalel: I think the size of the terminal is kept in check for price reasons more than anything. This is a $100 set, and while bigger and pricier City sets exist, they tend to be few in number. What's more, the disadvantage to having a plane wide enough to seat two rows of passengers is that it inevitably takes up a big portion of the budget even for a larger set like this one. If the set were just the airport with no plane, then the terminal could probably be around twice this size at the very least… but then the set would not offer such a complete play experience.

Lego has an ongoing deal with publisher Dorling Kindersley (DK), who are producing a series of illustrated hardback books looking at different aspects of the construction toy. The first was "The Ultimate Lego Book", published in 1999. More recently, in 2009, the same publisher produced The LEGO Book, which was sold within a slipcase along with Standing Small: A celebration of 30 years of the LEGO minifigure, a smaller book focused on the minifigure. In 2012, a revised edition was published. Also in 2009, DK also published books on Lego Star Wars and a range of Lego-based sticker books.[90]

As is the norm with LEGO sets these days, there are a fair few stickers in use for this item. I’m still not a fan of their use, but at this point in time, it is something I have come to expect and just get on with it now. In their defence, they do add to the overall presentation, making it that little bit harder to complain. As I said, this is my favourite of the three planes in the set, mainly because it looks superb and offers a great build experience. Seriously, I had so much fun building this. The instructions – as always – are clear, and it is not going to provide any major issues. Stability-wise, there are no concerns here, with the finished product very sturdy and, as proved by my daughter, can handle itself when being flown around the room by an excited seven-year-old. One minifigure can be seated at the controls, with suitable space for application and removal. The other pilot has its place on the top of the plane, with a single piece of black fencing to provide support for the death-defying pilot.

In 1997 they had an architectural competition for a new 430,000 ft² (40,000 m²) passenger terminal, designed to serve 3.5 million passengers a year, north of the original airport. KHR Architects won the assignment and completed the construction in co-operation with COWI, and at the end of May 2002 the new passenger terminal was put to use, as the first phase of the future expansion, which is scheduled to take place north of the start and runway, while air cargo services, business and private aviation will continue to be served from the existing buildings south of the runway. In connection with this expansion, the largest since the beginning of the airport, it was with effect from 1 January 1997 turned into a Joint-stock company, Billund Airport A/S, with the former members Vejle County and municipalities Vejle, Kolding, Grindsted, Billund, and Give as shareholders.
Bag 3 starts the aircraft and includes 3 minifigures (2 passengers and a pilot)  The aircraft has the standard wings and fuselage sections.  I am not a fan of the giant wing piece as it limits the number of seats.  It does however help to make the aircraft more realistic.  Given the size of the aircraft, there are only 5 seats for passengers which is rather disappointing.
This set has essentially all that's needed for airplane-related play: the plane, an airport terminal, and a service vehicle. And each part of the set is quite detailed. The plane feature a galley and a toilet; the service vehicle has stairs, a baggage trailer, etc; and the terminal has revolving doors, security check, and a baggage conveyor belt. The building process is also well planned out and documented. The child is eased into building by starting out with the service vehicle, then comes the plane, and last the terminal, which can be challenging.

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?
The Lego Group began in the workshop of Ole Kirk Christiansen (1891–1958), a carpenter from Billund, Denmark, who began making wooden toys in 1932.[7][8] In 1934, his company came to be called "Lego", derived from the Danish phrase leg godt, which means "play well". In 1947, Lego expanded to begin producing plastic toys.[9] In 1949 Lego began producing, among other new products, an early version of the now familiar interlocking bricks, calling them "Automatic Binding Bricks". These bricks were based on the Kiddicraft Self-Locking Bricks, which had been patented in the United Kingdom in 1939[10] and released in 1947. Lego had received a sample of the Kiddicraft bricks from the supplier of an injection-molding machine that it purchased.[11] The bricks, originally manufactured from cellulose acetate,[12] were a development of the traditional stackable wooden blocks of the time.[9]
I'm not sure what to make of the set yet. I like the planes (although that biplane really doesn't need the bubble canopy). The idea of adding a hangar is interesting and I don't mind that it's a bit open. But the fact that it'll only house one of the three planes is annoying. Having said that, I'm not sure what you could do about it. Tripling the hangar would make it big and boring and push the price up. Could they have done two planes and a double hangar?
Colour-wise, it is mainly yellow, with only a dash of green and red, and a little more white, there to break it up. The worker has space to stand and drive the vehicle, and has a walkie talkie attached on the side of the car. Around the other side is a coiled-up, what I assume is a, fuel pump. It looks pretty good when coiled up on the side of the car. Stickers come into use again here, this time for the number plates.