The $200 million Deep Maintenance and Modification Facility (DMMF) is a landmark defence infrastructure project that is set to transform Australia’s sovereign capability in military aircraft sustainment and support.
Strategically positioned adjacent to RAAF Base Edinburgh in northern Adelaide, the DMMF will provide long-term maintenance and modification support for two of the nation’s most critical air platforms – the RAAF P-8A Poseidon and E-7A Wedgetail – which play a critical role in maritime surveillance and airborne early warning operations.
The facility will include a 240m-long, 60m-wide, 25m-high four-bay hangar that will be used to service the aircraft. In March 2025, the State Government announced that the DMMF will also support specialised maintenance for international allied aircraft including the US Navy’s MQ-4C Triton aircraft fleet.
Construction on the 2.1-hectare facility began in August 2024 and is expected to be completed by mid-2026. Once operational, the DMMF will serve as a key national asset, supporting readiness, resilience and the future of Australia’s aerospace support system.
The project will generate 450 jobs during construction as well as ongoing highly skilled roles in advanced aircraft maintenance, engineering, avionics and logistics.
The DMMF is being delivered as a partnership between the Australian Government Department of Defence and the Government of South Australia, through Renewal SA.
