A/S Aero A/S Aero A/S Aero was a Norwegian airline company founded by Tancred Ibsen in January 1920. The company was financed by Tancred Ibsen's uncle, businessman Einar Bjørnson, and two shipowners. Despite the "A/S" (for private company limited by shares) in its name, A/S Aero was never formally registered as a limited company. The company purchased one Hansa Brandenburg W.29 and four Friedrichshafen FF.49 aircraft from Germany in February. This deal was probably illegal as the Entente prohibited the export of German surplus aircraft, but Ibsen nevertheless got permission from the Norwegian Ministry of Defence to import the five German aircraft.
Aero León a depressurization problem and had an emergency landing. After landing, the cattle were found dead, due to the temperature descending to subfreezing levels by the depressurization; after an investigation, DGAC found several maintenance failures in the fleet of Aero León. The airline was suspended on May 21. However, the airline renewed its papers, gave a massive maintenance to the fleet and returned to fly in June 10, when their AOC was returned. In July 28, the airline suffered another incident after one airplane had an emergency landing at Mexico City. An investigation found more than 36 human corpses in the