British Caledonian in the 1970s 31 March 1973 - with the BR airline designator it had inherited from BUA at the time of its formation. This resulted in exclusive use of the BR designator as a prefix for all BCal flight numbers. In 1973, BCal also inaugurated its fourth scheduled domestic trunk route between London Gatwick and Manchester. The new service was contracted to British Island Airways (BIA), BUIA's successor, which operated two daily return trips using its Handley Page Dart Herald turboprops. On 20 March 1974, BCal switched its Gatwick—Paris services to the then brand-new Charles de Gaulle Airport in the northern Paris suburb
Paris–Le Bourget Airport commercial brand Paris Aéroport was applied to all Parisian airports, including Le Bourget airport. The Bureau d'Enquêtes et d'Analyses pour la Sécurité de l'Aviation Civile (BEA) is headquartered in Building 153 on the grounds of Le Bourget Airport and in Le Bourget. Le Bourget Airport hosts the Musée de l'Air et de l'Espace, which is also located in the commune of Le Bourget. Paris–Le Bourget Airport Paris–Le Bourget Airport () is an airport located within portions of the communes of Le Bourget, Bonneuil-en-France, Dugny and Gonesse, north-northeast (NNE) of Paris, France. Once Paris's principal airport, it is now used only