This is an English translation of an article that first appeared in the Dutch issue 142 of Luchtvaart Nieuws in June 2025.
When KLM director Albert Plesman made plans shortly after World War II to finally resume flights to the Dutch East Indies, it seemed like an impossible task. With the then-available DC3 Dakotas and Lockheed Constellations, several stopovers were needed to reach Batavia (the capital of the Dutch East Indies during the colonial period), but due to the devastation of war, airfields everywhere lay in ruins. Plesman didn’t give up. He envisioned that Dutch engineers could take the lead in rebuilding runways and landing strips in the Middle East and Asia. He sought support from several Dutch construction companies and from Philips Electronics Company. He then recruited a small technical team.
Soon, a dedicated workspace was set up in KLM’s headquarters in The Hague for the “Netherlands Airport Consultants” (NACO). KLM employees at the time referred to it as “the engineers’ room.”
The first task for Plesman’s specialists was to make the airport in Alexandria, Egypt operational again. They then repaired other airfields as well, enabling KLM to once again fly the best routes to and from the now-independent Indonesia.
Batavia had become Jakarta. The NACO engineers continued doing what they did best: designing, building, and improving airports.
The little room in the KLM office soon became too small. NACO was officially founded in 1949 as an independent company and later became part of the engineering firm Haskoning. For a long time, the 220 airport consultants of today’s NACO worked from The Hague. Only this spring did they move to a special location on the university campus in Delft. A few years ago, Haskoning (6,000 employees who collectively own the company, with annual revenues of over 700 million euros) purchased the historic 1912 building of the former Faculty of Mining. The building was renovated and updated to meet modern standards of energy use and ergonomic working.
From Delft, NACO experts now perform their craft. What is their ‘craft’? Around the world, they design runways, airport terminals, baggage systems, aircraft parking areas, taxiways, cargo handling facilities, check-in counters, connections to train and bus transport, customer satisfaction measurements, and all sorts of other things needed for a modern airport in 2025. They also regularly plan entirely new airports, such as Daxing in Beijing.
Over 75 years, NACO has grown into a leading aviation consultancy. From Lima to Singapore, from Cape Town to Tromsø, and from Anchorage to Christchurch—there’s hardly an airport in the world where NACO’s experts haven’t devised, calculated, and implemented smart solutions to pressing problems.
You can design as cleverly as you like, but an airport is ultimately also a political science artwork. If there’s one nation that knows all about this, it’s the Dutch—with their Schiphol. Everyone here has a deeply personal opinion about what should happen next in the Haarlemmermeer polder.
It’s striking how cautiously NACO’s Director of Business Development, Joeri Aulman, speaks about it. After all, he knows the detailed considerations that have shaped Schiphol’s history. “There was great international appreciation for Schiphol. The foundation is still there.”
He believes in continuous improvement, not in a giant leap toward a new airport at sea. Aulman: “Once every ten years, we’re commissioned to study the feasibility of such an airport. Each time, it turns out that Dutch companies and knowledge institutions are perfectly capable of building an artificial island and constructing an airport there. But to truly reduce aircraft noise, it would have to be far out in the North Sea. That would require a long tunnel to the airport island, which would cost many times more than the airport itself—making the business case unviable. From a sustainability perspective too, new construction is not preferable to optimizing existing infrastructure.”
This is Aulman’s philosophy when designing airports: “There’s always tension. The architect wants a beautiful airport with vaulted ceilings and clear sightlines, so passengers instinctively know how to walk to their plane. We engineers aim for an efficient airport where travellers are directed in time to where they need to board. Yes, sometimes that means an information board ends up in the architect’s way. That’s why we prefer working with architectural firms we know. Engineers and architects often have conflicting views because space is always limited. But if you try to understand each other, it becomes a challenge—and something beautiful can grow from that.”