Spike and Suzy and Suzy happen in real countries all over the world, with Belgium (their home country) as main focus for many stories. While in the early stories large distances were usually traveled using the fictitious "Gyronef", an experimental helicopter devised by professor Barabas, starting from the 1960s all air travel is provided by the Dutch national airline KLM, making it an early and prominent example of product placement in European comics. Vandersteen chose KLM over the Belgian national airline SABENA because of his friendship with Ron Winderink, PR manager at KLM. Willy Vandersteen created "Suske en Wiske", beginning publication in "De
Sabena Flight 503 communication was cut off. The aircraft had crashed somewhere in the mountains of Rieti, Italy North-East of Rome and was now missing. Sabena itself got notified about the missing aircraft that same night at 23:15 but would not make an official statement until the morning of the following day. The airplane had crashed somewhere in the mountains of Rieti, Italy North East of Rome which were known for being difficult to access and also lay in a nature reserve where wolves roamed. The Italians immediately started a search and rescue mission to locate the missing aircraft and rescue its occupants.