Footage released by Russia shows a U.S. Navy P-8A Poseidon maritime patrol aircraft flying over the Black Sea equipped with a rarely seen intelligence-gathering system.
The video, filmed from the cockpit of a Russian Su-35S fighter, highlights the Poseidon carrying the AN/APS-154 Advanced Airborne Sensor (AAS), one of the Navy’s most secretive radar pods.
The system, developed largely in secrecy by Raytheon, is described as a versatile radar designed for detecting submarines, tracking surface vessels, and conducting coastal reconnaissance. The AAS pod is mounted beneath the Poseidon using a Special Mission Pod Deployment Mechanism (SMPDM), which lowers the system away from the aircraft’s twin engines during flight, expanding the radar’s field of view. Aviation Week was first to report on the SMPDM mechanism in 2019.
Details about the system remain limited, but the radar is known to employ an active electronically scanned array (AESA) capable of moving target indication and synthetic aperture imaging. This allows the P-8 to track moving targets at sea and on land, while also producing high-quality radar images under difficult conditions, including at night or in poor weather.
According to available information, the AAS is designed specifically to operate in coastal environments, where the ability to scan both water and land simultaneously is critical. Traditional search radars often struggle to handle these mixed conditions, either being optimized for one environment or requiring separate operating modes.
The video released by Russia adds a rare glimpse of the system in operational use.
Raytheon has kept much of the system’s development under strict secrecy, but the footage reinforces what analysts have suspected for years: the Navy is deploying its most advanced surveillance technology closer to areas of direct confrontation with Russian forces.