This article is based on an official press release from the Australian Government Department of Defence and additional industry data.

RAAF Welcomes First MC-55A Peregrine: A New Era for Electronic Warfare

The Royal Australian Air Force (RAAF) has officially accepted the first of four MC-55A Peregrine aircraft, marking a pivotal moment in the nation’s modernization of its intelligence, surveillance, reconnaissance, and electronic warfare (ISREW) capabilities. The aircraft touched down at RAAF Base Edinburgh in South Australia on January 24, 2026, following a trans-Pacific ferry flight.

Acquired under the multi-billion dollar Project AIR 555, the Peregrine is designed to operate in complex electromagnetic environments, providing the Australian Defence Force (ADF) with critical advantages in “grey zone” operations. According to the official announcement from the Minister for Defence, this arrival represents the first step in delivering a “first-of-type” capability that will integrate seamlessly with Australia’s existing fleet of F-35A Lightning II, E-7A Wedgetail, and P-8A Poseidon aircraft.

While the aircraft is based on a commercial business jet airframe, its internal systems allow it to act as a high-altitude network node, capable of detecting hostile emissions and sharing targeting data instantly with allied assets.

Strategic Importance and Capabilities

The MC-55A Peregrine is a highly modified Gulfstream G550, outfitted with advanced mission systems developed by L3Harris Technologies. Its primary role is to hunt for electronic signatures, such as enemy radar and communications, and build a comprehensive “electronic order of battle” for commanders.

Enhancing Deterrence

In a statement regarding the aircraft’s arrival, Deputy Prime Minister and Minister for Defence, the Hon. Richard Marles MP, emphasized the strategic necessity of the platform in the current geopolitical climate.

“This advanced capability reinforces Australia’s national defence posture and contributes to deterrence… ensuring the RAAF is ready to detect, disrupt, deter, and if necessary defeat threats.”

, Hon. Richard Marles MP, Minister for Defence

The aircraft provides a sovereign capability for Australia to monitor its northern approaches and the broader Indo-Pacific region. By operating at high altitudes, the Peregrine can gather intelligence while remaining outside the range of many surface-to-air threats.

Technical Specifications

According to defence industry reports and RAAF historical data, the MC-55A offers significant performance advantages over legacy platforms. Key specifications include:

• Platform: Gulfstream G550 airframe with L3Harris mission integration.
• Service Ceiling: 51,000 feet, allowing for extended line-of-sight signal collection.
• Endurance: Approximately 14–15 hours, enabling long-range patrols without immediate refueling.
• Range: Estimated at 12,500 km (6,750 nm).

Visually, the aircraft is distinguished by a large “canoe” fairing beneath the fuselage and a bulbous tail cone, which house the sensitive antenna arrays and sensors required for its electronic warfare mission.

Operational Deployment and Timeline

The new fleet will be operated by the storied No. 10 Squadron (10SQN) at RAAF Base Edinburgh. 10SQN has a long history of maritime and electronic surveillance, having previously operated the AP-3C Orion. The transition to the MC-55A ensures the squadron remains at the forefront of electronic warfare technology.

Infrastructure and Basing

While RAAF Base Edinburgh will serve as the home base, the Peregrine is designed for expeditionary operations. Defence reports indicate that significant infrastructure upgrades, totaling approximately $294 million AUD, have been undertaken to support the aircraft. These upgrades extend to forward operating bases including RAAF Base Darwin, RAAF Base Townsville, and the Cocos (Keeling) Islands, facilitating reach into the Indian Ocean and South China Sea.

Fleet Status

The arrival of the first jet (registration likely A51-003) leaves three aircraft remaining to be delivered. According to the research report, the remaining three MC-55As are currently in the United States, where they are supporting RAAF crew training and ongoing mission system testing. These aircraft are expected to be delivered progressively over the next year.

Air-Forces News Analysis

The arrival of the MC-55A Peregrine closes a critical capability gap for the ADF. Since the retirement of the specialized EW variants of the AP-3C Orion, Australia has relied heavily on allied support and interim measures for high-level electronic intelligence. The Peregrine brings this capability back in-house with a significant technological leap.

Furthermore, the “network node” aspect of the Peregrine cannot be overstated. In modern combat, the ability to fuse data from a passive sensor (like the Peregrine) and transmit it to a “shooter” (like a naval destroyer or F-35) in real-time is often the deciding factor in engagement success. This aircraft is not merely a listener; it is a force multiplier that enhances the lethality of the entire ADF combat system.

Frequently Asked Questions

What is the primary role of the MC-55A Peregrine?

Its primary role is Intelligence, Surveillance, Reconnaissance, and Electronic Warfare (ISREW). It detects, identifies, and disrupts adversary communications and radars.

How many MC-55A aircraft has Australia ordered?

Australia has ordered a total of four aircraft under Project AIR 555.

Where will the aircraft be based?

They will be based at RAAF Base Edinburgh in Adelaide, South Australia, operated by No. 10 Squadron.

What is the estimated cost of the project?

The total approved budget for Project AIR 555 is approximately $2.4 billion AUD.

Sources

• Minister for Defence Media Release