Boeing has started upgrading the Royal Australian Air Force’s (RAAF) P-8A Poseidon fleet under the Increment 3 Block 2 program, aimed at enhancing maritime surveillance and anti-submarine capabilities. The first aircraft has entered modification work as the RAAF also integrates its 13th Poseidon into service.
Under the four-year modernization plan, the aircraft will receive new antennas, sensors, and software to improve data processing and communication systems, enabling enhanced detection and targeting of advanced submarines. Australia is the first international operator to implement the Increment 3 Block 2 upgrades.
The 13th P-8A was delivered on September 29, while the 14th aircraft is scheduled to join the fleet in 2026.
“These upgrades, together with the delivery of the 13th P-8A, mark two important advancements for Australia’s defence of its vast coastline,” said Naomi Smith, Director of Boeing Defence Australia (BDA) Sustainment Operations. “Increment 3 Block 2 will deliver next-generation detection and targeting for aircrews, while the newest aircraft strengthens fleet readiness and operational reach, all while maintaining interoperability with the U.S. Navy P-8A fleet.”
The first two aircraft will be upgraded at Boeing’s Jacksonville facility in Florida, marking the first international P-8As to undergo modifications there. The remaining aircraft will be upgraded in Australia at BDA’s Deeper Maintenance & Modification Facility near RAAF Base Edinburgh, South Australia.
Smith added that the program will also expand the country’s aerospace workforce: “More than 30 aircraft maintenance engineer apprentices and trainees have already joined BDA to prepare for the Australian upgrade work, and as the program grows, we’ll create a further 30+ roles, strengthening Australia’s skilled aerospace workforce.”



