The improve brings the total set of capabilities outlined within the P-8A program’s evolutionary acquisition technique.
The U.S. Navy’s Naval Air Methods Command (NAVAIR) introduced final week the completion of the Increment 3 Block 2 (I3B2) modifications on the primary P-8A Poseidon Maritime Patrol Anti-Submarine Warfare plane. The intensive upgrades brings the platform to the fullest extent of its envisaged functionality as a full-spectrum ISR, sensing, submarine-hunting and surface-strike plane, preserving its relevance by means of the 2030s.
The brand new modified P-8A is without doubt one of the seven airframes chosen for the upgrades within the contract with Boeing. The primary plane is anticipated to be delivered to the Navy this month. I3B2 now brings the “full ASW, anti-surface warfare (ASuW), and intelligence, surveillance and reconnaissance (ISR) capabilities outlined within the P-8A program’s evolutionary acquisition technique,” explains NAVAIR.
The image launched by NAVAIR confirmed a P-8A Poseidon with the BuNo 169562, with the caption saying the plane was taking off with the I3B2 upgrades in Jun. 2025, suggesting this was the primary plane that underwent the overhaul.
NAVAIR additionally launched a video on its Instagram profile displaying a number of P-8A Poseidons taxing and taking off, mentioning that the I3B2 program upgrades the airframe and avionics with “enhanced sensors, digital interoperability and expanded weapons capability.” Among the many plane proven, an extended a part of the video exhibits the P-8A 169562, the primary to be modified.
The U.S. Navy at present operates 124 P-8A Poseidons, and plans to improve its whole deliberate fleet of 135 P-8As. Australia’s 14 Poseidons can even obtain the upgrades.
In addition to the usand Australia, the Poseidon can also be flown by Germany, U.Ok., India, South Korea, Norway, New Zealand and, in future, Canada. A complete of 185 P-8s are flying at present, collectively counting over 660,000 flight hours.
The primary Increment 3 Block 2 modification for the P-8A Poseidon to the @USNavy not too long ago ferried off from Cecil Airport in Jacksonville, Florida.
This vital #P8 improve features a new fight methods suite that can improve the sub hunter’s search, detection, & concentrating on… pic.twitter.com/sUIEDSNF4n
— Boeing Protection (@BoeingDefense) June 18, 2025
Increment 3 Block 2 upgrades
The P-8 fleet is overseen by the Maritime Patrol and Reconnaissance Plane Program Workplace (PMA-290), whereas the work on the primary airframe commenced at Boeing’s Upkeep, Restore and Overhaul hangar at Cecil Hangar in Jacksonville Florida in Mar. 2024.
The plane has been described because the Navy’s “premier multi-mission plane and cornerstone of the Maritime Patrol and Reconnaissance Power (MPRF).”
The Increment 3 Block 2 improve to the airframe and avionics methods “contains new airframe racks, radome, antennas, sensors, and wiring.” The electronics comprise “a brand new fight methods suite with improved laptop processing, increased safety structure, a large band satellite tv for pc communication system, an ASW indicators intelligence functionality, a observe administration system, and extra communications and acoustics methods to boost search, detection and concentrating on capabilities.”
In accordance with AIN, a brand new safe communications suite additionally permits the P-8A to coordinate successfully with ships of a service battle group, whereas enhancing interoperability with allied navies. New ASW functionality contains “indicators intelligence and an enhanced multistatic energetic coherent sonar system that tracks detonation sounds mirrored off submarines and detected by receiver buoys,” AIN added. A brand new observe administration system in the meantime fuses and prioritizes information on a single, aided by higher “computing energy” to fulfill the brand new calls for of the improved mission suite.
As reported by The Aviationist in Aug. 2024, when a brand new Multi-Mission Pod (MMP) developed by Boeing was noticed on a Navy P-8A Poseidon, I3B2 permits the “aircrews to look, find and observe essentially the most superior submarines on the earth, enabling the fleet to tempo the menace with the required functionality and capability to win the struggle.”
For floor strike missions, the P-8A Poseidon can already carry 4 AGM-84 Harpoons beneath its 4 underwing hardpoints, and can also be being examined to be built-in with the AGM-184C LRASM (Lengthy-Vary Anti-Ship Missile) by Boeing and the U.S. Navy, with the corporate saying the work was scheduled to be concluded by the summer season of 2024.
ASW upgrades
Army Aerospace Electronics reported on Jun. 18, 2025, that NAVAIR Patuxent River, Maryland, awarded a $12.9 million contract to RTX BBN Applied sciences Inc. to improve and modify the Floor Replay System (GRS) used with the P-8A.
The GRS is a high-fidelity acoustic mission reconstruction of sorties from the P-8A anti-submarine warfare (ASW) plane that allows Navy ASW efforts to remain up to date with P-8A acoustic capabilities. “RTX BBN consultants will be certain that the GRS software program algorithms and shows stay in alignment with Navy ASW methods, and stay backwards-compatible with earlier P-8A plane variations,” the report mentioned.
RTX BBN can even replace the P-8A Poseidon’s ASW methods updated with new multistatic energetic coherent (MAC) enhancements, and a number of enter a number of output (MIMO) capabilities of the brand new AN/SSQ-101C and the AN/SSQ-125B sonobuoys. Different methods to be dealt with by the corporate embody undersea benefit (USA) receiver sonobuoy array modifications; next-generation MAC-E energetic and passive sonobuoy sign processing; new operator machine interface designs; and high-duty-cycle capabilities.
#USNavy Sailors conduct an anti-submarine warfare train in a #USNavy P-8A Poseidon plane whereas out of Sigonella, Italy. VP-46 is at present forward-deployed to @USNavyEurope and conducts maritime patrol and reconnaissance missions all through Europe and Africa. #FlyNavy pic.twitter.com/hJq7TeRqb6
— U.S. Navy (@USNavy) February 10, 2021
Future
Constructing upon the expertise gained from the I3B2 upgrades, “future P-8A modifications might be made by way of a sequence of speedy functionality insertion efforts,” NAVAIR added. The NAVAIR launch quoted PMA-290 program supervisor, Capt. Erik Thomas, who upheld “lethality and survivability” for “at present’s ever altering international surroundings.”
The P-8A Poseidon plane is a confirmed functionality, conducting duties together with anti-submarine warfare & search & rescue missions. We’re buying two further Poseidon plane bringing the fleet to 14 as a part of the Govt’s $270 bn funding in defence functionality over 10 years. pic.twitter.com/VP9uyRFvGP
— Linda Reynolds (@lindareynoldswa) December 29, 2020
“The Increment 3 Block 2 modifications to the P-8A Poseidon will guarantee they continue to be essentially the most subtle and succesful maritime patrol and reconnaissance plane on the earth,” mentioned Capt. Thomas. NAVAIR described the P-8A the Division of Protection’s “solely long-range full-spectrum ASW, cue-to-kill platform, with substantial armed ASuW and networked ISR capabilities.”
