“Each one of these jets, which are based on the Boeing 737 Next Generation airliner, costs just over $171 million, according to Navy budget documents. So repairing even a seriously damaged example could be cheaper than buying a brand-new one.” That sobering analysis, delivered by a Navy spokesman following the P-8A Poseidon overrun at Kaneohe Bay, peels away the tough math behind the recent write-off of the first Poseidon ever lost by the U.S. Navy.
The accident happened on November 20, 2023, when a Patrol Squadron Four P-8A landed short of the runway at Marine Corps Air Station Kaneohe Bay and ended up in the shallow, environmentally sensitive waters of the bay. The nine crew members evacuated safely, but the aircraft’s misery was far from over. For nearly two weeks, the Poseidon sat half-sunk in sea water, its engines and critical systems exposed to corrosive substances. As Rear Adm. Kevin Lenox, in-command on the scene, described it, “The aircraft is in remarkably good condition, and has full integrity,” but only after a complicated and costly salvage effort would the full extent of the damage be known.
The rescue effort was an engineering and environmental masterpiece. Navy divers, aided by civilian contractors, embedded inflatable rollers beneath the 60-ton plane, carefully lifting it from the coral reef to prevent more damage to the environment. The operation, costing an estimated $1.5 million, also included de-fueling nearly 2,000 gallons of fuel from the plane a process never previously performed underwater on a P-8A. “The crew conducted a slow and methodical de-fueling process,” Lenox stated, so fuel was not spilling into the bay and combat potential of the aircraft was preserved as much as possible while it is extracted. Options were explored by officials to crane the aircraft or float it onto the runway. Float bags and other equipment were delivered last week.
After beaching, the Poseidon was towed to a wash rack with divided drains, a critical step to prevent rinse water contamination of the bay. There, aviation maintenance and investigative personnel began the tedious assessment of the state of the airplane. The P-8A design, which is derived from a commercial airliner but made harder for naval use, includes corrosion-resistance features. But the saltwater bath caused concerns about hidden damage to the engines, avionics, and the belly section of the fuselage that’s packed with antennas and apertures. The nose cone and radar assembly on the plane were also absent, compounding the repair uncertainty.
The decision was final after careful examination by the Navy’s P-8A Fleet Support Team, Boeing, and AAR, the airframe maintenance contractor. “As a result of the extensive repair requirements, necessity for unique aircraft manufacturing representative support equipment, and estimated cost required to return the aircraft to service in a mission capable configuration, pursuing a repair of the aircraft was determined to be cost prohibitive,” Naval Air Systems Command stated. The new cost per P-8A was up to nearly $180 million as of Fiscal Year 2024, but the uncertain cost and technicality of refurbishing the water-logged jet tipped more toward disposal.
The response of the Navy was in line with standard Department of Defense procedure for disposal and demilitarization. According to DoD procedure, it not only involves scrapping but also removal and recovery of all serviceable components and mission systems. The components are processed into the Navy supply system and remain operationally ready for the remainder of the fleet. Those activities are currently in progress in Hawaii and expected to be complete by August 2025, the Navy confirmed, noting the methodical pace and regulation-bound assiduity of military aircraft scrapping.
A lost Poseidon is no small issue for the Navy maritime patrol community. The P-8A, having now replaced in large part the legendary P-3C Orion and EP-3E Aries II, is a cornerstone of U.S. anti-submarine warfare (ASW), anti-surface warfare (ASuW), and intelligence, surveillance, and reconnaissance (ISR) operations. The target fleet size is 128 airframes, deliveries through 2027, but nothing on buying an additional jet to replace the one lost in Hawaii.
Meanwhile, the Poseidon program advances technologically. In June 2025, the Navy completed its first Increment 3 Block 2 upgrade, including a new combat systems suite, enhanced computer processing, a wideband satellite communications system, state-of-the-art ASW signals intelligence, and a track management system. “Increment 3 Block 2 brings the capability that the P-8A was made for. These modifications will allow aircrews to search, locate and track the most advanced submarines in the world, enabling the fleet to pace the threat with the required capability and capacity to win the fight,” said Capt. Erik Thomas, program manager for the Maritime Patrol and Reconnaissance Aircraft program office.
The Poseidon’s export triumph flying in Australia, India, New Zealand, Norway, South Korea, the United Kingdom, and Canada and Germany shortly after tells volumes about its reputation as the globe’s most sophisticated maritime patrol and reconnaissance aircraft. But the fate of the Kaneohe Bay Poseidon serves to remind us that no matter how good the systems are, they are ultimately subject to the unpredictable risks of operational life, and that whether to repair or pension off a military asset is as much an engineering reality as it is a matter of strategic necessity.
