Aviation in the Azores an era that was tumultuous, the democratic politicians debated a proposal in Portuguese National Assembly to regionalize the provision of services to the Azores and Madeira. Following these events, the increasingly autonomous governments of the Azores, between 1981 and 1983, built several airports to provide expanded service to the remaining islands. In addition to improvements at Horta Airport, the government of the Azores finalized construction of: Since the 1940s, the Portuguese flag carrier Transportes Aéreos Portugueses (today's TAP Portugal) operated regular flights to the Azores through the gateways in Ponta Delgada, Lajes and Vila do Porto. Meanwhile, a group of
Hydrothermal vents and seamounts of the Azores waters of the Azores: These sites, with the exception of the Moytirra system, are located in the southern part of the archipelago, and have been investigated by national and international scientists. The isolated Dom João de Castro Bank is also considered in this group; located between São Miguel and Terceira, the seamount is one of the highest independent seamounts in the archipelago and home to a thriving marine volcanic habitat. In 2010, a shallow hydrothermal field was discovered off the Ponta da Espalamaca, on the island of Faial, showing evidence of de-gasification. Efforts are being made to classify these areas