During the following years Heliswiss expanded in Switzerland and formed a network with bases in Belp BE, Samedan GR, Domat Ems GR, Locarno TI, Erstfeld UR, Gampel VS, Gstaad BE and Gruyères FR.

During the build-up of the rescue-company Schweizerische Rettungsflugwacht (REGA) as an independent network, Heliswiss carried out rescue missions on their behalf.

Heliswiss carried out operations all over the world: in Greenland, Suriname, North Africa and South America.

From 1963 Heliswiss started to expand and began to operate with medium helicopters like the Agusta Bell 204B with a turbine power of 1050 HP and an external load of up to 1500 kg.

Swiss Helicopter's fleet comprises some 36 helicopters (as at December 2013):[2] Flughafen Bern-Belp, Samedan GR, Domat/Ems GR, Locarno Airport, Erstfeld UR, Gampel VS and Gruyères FR.