With the outbreak of the Falklands War in 1982, Atlantic Conveyor was requisitioned on 14 April, and Atlantic Causeway on 4 May to serve as transport and support ships for the Royal Navy taskforce being sent to retake the Falkland Islands.

[1] A hangar was fitted to her upper deck, and an improved system for delivering aviation fuel.

[2] She sailed to the Exclusion Zone via Ascension Island, arriving on 27 May, two days after her sister Atlantic Conveyor had been hit and burnt out by Exocet missiles.

[3] She then disembarked her aircraft and stores in San Carlos Water from 28 May, remaining on station with the rest of the British fleet.

Atlantic Causeway entered Port William on 17 June to unload further supplies, before leaving to return to Britain on 13 July.