The Frenchman boards an airplane to Singapore. The pilot announces that they fly on a Boeing 747. In the following cutaway scene, a Boeing 777 is shown.
At the beginning of the episode, the pilot says "welcome onboard this Air France Boeing 747 to Singapore". However, the next shot shows a 2-turbine aircraft taking off, so clearly not a Boeing 747, which has four engines and a distinct hump towards the front. Air France/KLM have retired all their 747s and only a handful remain in service presently, so it can be assumed it was too difficult to find a 747 for the shot and opted for another plane like a 787 instead as the shot is mainly a silhouette anyway.