The 4th Army Aviation Regiment "Altair" is an Italian Army regiment based at Bolzano Airport in South Tyrol. The regiment is part of the army aviation and assigned to the Airmobile Brigade "Friuli". Formed in 1976 as support unit of the IV Alpine Army Corps the regiment has been since then responsible for helicopter operations in the Italian Alps and constitutes, together with the 2nd Army Aviation Regiment "Sirio", the Italian Army's general support aviation capability. The regiment's anniversary falls, as for all Italian Army aviation units, on 10 May 1953, the day the aviation speciality was founded.