5ACS was reformed on 8 August 1951 at Bankstown , New South Wales to fill the RAAF 's need for engineering units and provide a nucleus for the potential formation of other airfield construction squadrons . It initially worked on projects in Sydney before moving to RAAF Base Williamtown in 1952 where it undertook a major upgrade of that base which lasted until 1955 . During this period , the squadron also worked on other RAAF facilities in New South Wales . Between March and November 1952 a detachment of 30 men from 5ACS was deployed to the Montebello Islands off the coast of Western Australia to support the British nuclear weapons test in the area , Operation Hurricane . Another detachment from the squadron assisted with the construction of range facilities at the Woomera Test Range in South Australia between 1952 and 1955 . Most of 5ACS moved to Darwin in 1955 to build a - long runway and supporting facilities at RAAF Base Darwin , though a detachment remained at Williamtown until June 1963 and two other detachments were formed to undertake engineering tasks in the Sydney region and rebuild the runway at RAAF Base Amberley . The expansion of RAAF Base Darwin was completed in 1964 . Following the disbandment of No. 2 Airfield Construction Squadron on 28 April 1961 , 5ACS was left as the RAAF 's only construction unit and took on some of 2ACS ' personnel and equipment . For a short period the remnants of 2ACS was designated Detachment C of 5ACS while it completed works on RAAF Base East Sale ; this sub-unit was disbanded in September 1961
Operation Hurricane
Operation Hurricane
No. 5 Airfield Construction Squadron RAAF