In 1962 2 ex KLM L-749As were bought and put into service on the Montevideo and Buenos Aires route. A third was purchased in 1965 and the network extended to Rio de Janeiro flown with a leased L-109h from Dynalectron. The Super Constellation was later transferred to Onda (Organización Nacional de Autobuses S.A.). Dynalectron took over the control of Causa and formed Tausa ( Transportes Aéreos Uruguayas SA) for the international passenger and freight routes until May 1967. Both Causa’s and Tausa’s operating licenses were cancelled in November 1967 and th routes transferred to Pluna.