Precincts
Deep Maintenance and Modification Facility (DMMF), Edinburgh Defence Precinct
Industry Partners
Boeing Defence Australia
RAAF Base Edinburgh in Adelaide is the base for the nation’s fleet of P-8A Poseidon maritime surveillance aircraft.
In February 2014, the Australian Government approved the purchase of P-8A Poseidon aircraft to replace the AP3-C Orion fleet. The 14th and final P-8A Poseidon aircraft touched down at RAAF Base Edinburgh in May 2026, where the fleet are operated by Number11, 12 and 292 Squadrons.
The Poseidon, a variant of Boeing’s 737 commercial airliner, strengthens Australia’s ability to conduct anti-submarine warfare, maritime strike, and intelligence, surveillance and reconnaissance operations, ensuring we remain vigilant across our maritime approaches.
Completion of the 14‑aircraft fleet enables higher availability, increased resilience and the ability to deliver sustained operations in support of Australia’s security and regional stability.
Maintenance and modification of the P-8A Poseidon maritime surveillance aircraft will be undertaken at the Deep Maintenance and Modification Facility, a purpose-built facility opened in May 2026, adjacent to RAAF Base Edinburgh.
South Australia is committed to maximising opportunities for local industry over the life of the project, which will involve 30 years of sustainment and upgrade work.
