First time on our screens: a Hellenic Navy P-3B Orion tracked in action over the Ionian Sea

Today we record a particularly interesting event on our radars. For the first time, we had the opportunity to track the operations of a Lockheed P-3B Orion belonging to the Hellenic Navy on a mission over the Mediterranean Sea.

The aircraft, identified by the registration 153415 and operating under the callsign TRN415, took off from the Elefsina air base (Eleusis AB), located a few kilometers west of Athens.

As can be seen from the track, after takeoff the aircraft crossed the entire Gulf of Corinth heading west, before entering the airspace over the Ionian Sea. The asset operated with a typical flight profile for maritime patrol (MPA) and anti-submarine warfare missions, keeping a low altitude of about 5,000 feet.

The P-3B carried out intense surveillance activity (visible from the loitering circuits on the map) off the coast of Preveza and the central Ionian Islands, before continuing its mission heading further west/southwest into the open sea.

Although the flight path perfectly replicates a standard operational patrol, it is actually a test flight conducted before the newly upgraded aircraft is officially delivered to the Hellenic Navy.

A Grand Operational Return

The tracking of this asset is by no means coincidental and is highly relevant. After being gradually retired from service starting in 2009, Greece launched an ambitious (and troubled) Mid-Life Upgrade (MLU) program to refurbish four of its historic patrol aircraft, with the support of Lockheed Martin and the Hellenic Aerospace Industry (HAI). Just recently, in September 2025, the first upgraded prototype successfully completed its long-awaited maiden flight, marking a turning point. The aircraft tracked today is undoubtedly the result of this operational rebirth.

The MLU program has practically transformed these aircraft. In addition to extending their operational life, the avionics have been revolutionized: a modern “glass cockpit” by Collins Aerospace has been installed, alongside a powerful new IAI ELM-2022A multimode radar, L3 Wescam optical turrets, and a domestically produced tactical mission management system (M2IMS) supplied by SCYTALIS.

In addition to its excellent ISR (Intelligence, Surveillance, and Reconnaissance) capabilities, it boasts impressive firepower for ASW (Anti-Submarine Warfare) and ASuW (Anti-Surface Warfare) missions: it can carry over 9 tons of payload on its 18 hardpoints, including Harpoon anti-ship missiles, Maverick air-to-surface missiles, torpedoes, and naval mines.

This sighting off the Ionian coast thus confirms the progressive return to action of the modernized P-3B Orions (with full operational capability of the entire fleet expected by 2027). A fundamental asset that has no equal in the current Greek inventory, returning to patrol the delicate waters of the Eastern Mediterranean and the Aegean Sea.