The P-3 Orion Airborne Early Warning Aircraft Has Flown Its Last Mission

U.S. Customs and Border Protection (CBP) has retired the last of its P-3 Airborne Early Warning (AEW) aircraft. The AEW version is instantly recognizable from the saucer-like radar dome on top, as seen on other AEW types like the E-2 Hawkeye and the E-3 Sentry. CBP was the only operator of this variant of the P-3 Orion and is said to have been the only law enforcement agency to fly any kind of dedicated AEW plane. The retirement of these aircraft comes at a time when American AEW assets, in general, are under heavy strain by demands globally.

CBP officially retired its final P-3 AEW on September 30, 2026, after a final flight from National Air Security Operations Center Jacksonville (NASOC Jacksonville), in Jacksonville, Florida. CBP has also flown Long Range Tracker (LRT) variants of the P-3, configured for more traditional maritime surveillance missions. The current plans for the LRT aircraft, and whether their sunset may also be on the horizon, are not immediately clear, and TWZ has reached out for more information. Orions of all types have been steadily disappearing from service with the U.S. military and elsewhere across the U.S. government as the aging aircraft become more difficult to operate and maintain.

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“Our Jacksonville-based P-3 AEW fleet has served as a cornerstone of America’s outer-layer border security,” according to a brief announcement from CBP about the retirement on social media. “Its crews flew far beyond our borders, providing wide-area surveillance across the Caribbean, Gulf of America [Gulf of Mexico], and the transit zones of Central and South America, helping detect and track threats before they could reach the United States.”

By all indications, including official CBP sources, the P-3 AEW fleet consisted of eight aircraft at its peak. There is a confusingly worded 2014 CBP press release that mentions an “11th and final Lockheed Martin P-3 Airborne Early Warning (AEW) aircraft overhaul,” but that figure looks to also include three of the six LRT versions. The same release says that CBP only had 14 P-3s of all types at that time.

What was then known as the U.S. Customs Service (USCS) first began operating the P-3 AEW version in the late 1980s. The aircraft were converted from second-hand maritime patrol variants of the Orion. The first example had started life as a P-3B for the Royal Australian Air Force (RAAF). Ex-U.S. Navy P-3s were also converted.

The initial three P-3 AEWs were equipped with the AN/APS-138 radar. The same radar was used on early E-2C Hawkeye airborne early warning and control aircraft operated by the U.S. Navy, as well as several other armed forces internationally.

“The Customs Service had previously borrowed U.S. Navy E-2Cs to meet its antinarcotics surveillance requirements, but required an aircraft with longer range and on-station time,” according to a 2006 report from Forecast International. “In June 1989, the U.S. General Accounting Office issued a report on the drug interdiction P-3B AEW aircraft. The findings indicated that the radar performance was as specified, but the P-3B (when compared to the E-2C) was less costly to operate per square mile of area covered because of the higher cruising speed and longer endurance. The P-3B had at least twice the in-flight endurance of the E-2C.”

Starting in the 1990s, USCS began the process of acquiring additional P-3 AEWs with newer AN/APS-145 radars, as also used on later model E-2Cs. The original AEW Orions were eventually refitted with APS-145s, as well. It’s worth noting here that the U.S. Coast Guard separately moved to acquire an AEW version of the C-130H, designated the EC-130V, in the 1990s, which used the AN/APS-125 radar, also used on older E-2s. Budget cuts led to the end of that program. The EC-130V that had been built was redesignated as an NC-130H and subsequently used for test purposes.

The P-3 AEWs were also equipped with a sensor turret containing electro-optical and infrared (EO/IR) video cameras, allowing the aircraft to more closely investigate targets spotted on radar. CBP regularly conducted P-3 operations that paired AEWs with LRT variants to provide an even broader array of sensor capabilities on missions. The LRTs have EO/IR sensor turrets, as well as AN/APG-66 and SeaVue radars. The pulse-doppler AN/APG-66 is primarily designed for spotting and tracking aerial targets, and was originally used on early variants of the F-16 fighter. SeaVue is a multi-function type with surface search and synthetic aperture radar (SAR) imagery modes. Images produced via SAR are highly detailed maps of the surface below, and can be captured day or night, and regardless of any cloud cover, smoke, or dust. 

Beyond radars and other sensors, the P-3 AEWs also had a robust communications suite consisting of VHF and UHF radios, as well as satellite communications links by the end of their career. CBP’s entire P-3 fleet, including the AEWs and LRTs, has received various updates over the years, including new ‘glass cockpits’ starting in the early 2000s.

Though primarily employed in support of counter-narcotics interdiction operations, the airborne radar and command and control capabilities were also applied to other missions, including disaster relief and humanitarian assistance efforts at home and abroad. As an example, CBP’s P-3 AEWs helped with air traffic coordination, as well as provided other support, during relief efforts in Texas in the wake of Hurricane Harvey in 2017.

At the same time, CBP’s entire P-3 fleet, including both the AEW and LRT versions, has only been getting increasingly older and difficult to sustain. The P-3B variant first entered U.S. Navy service in the 1960s. CBP did put its P-3s through a Service Life Extension Program overhaul in the 2010s, which included “new wings and tail for each aircraft and completely strips down the aircraft to its bare metal for an inspection,” according to a 2014 press release.

As mentioned, the P-3 family has been in steadily dwindling service in the United States, overall, in recent years. The U.S. Navy has completely retired the Orion as a maritime patrol platform, and the service has also fully divested its more specialized EP-3 intelligence-gathering variants. The Navy had retained a small number of P-3s for research and development and test and evaluation activities, but growing sustainment challenges have been prompting the retirement of those planes, as well. The last NP-3C assigned to the Navy’s Scientific Development Squadron One (VXS-1), the “Warlocks,” was also retired last month. VXS-1 previously operated a ‘domed’ NP-3D, similar to, but distinct from, CBP’s P-3 AEWs, as well. The National Oceanic and Atmospheric Administration (NOAA) is also in the process of replacing its pair of P-3s, configured as civilian hurricane hunter aircraft, with new C-130J Hercules-based platforms. The shrinking U.S. Orion operator base can only have a knock-on impact on CBP P-3 operations.

A key question now is how CBP will fill any gaps left by the retirement of the final AEW version. The agency does continue to operate a mix of other crewed fixed-wing aircraft with mixtures of radars and other sensors, as well as MQ-9 drones, but none of these platforms are equipped with a sensor like the AN/APS-145. CBP also has a network of tethered aerostats with radars at fixed sites around the Caribbean. As an aside, General Atomics, together with Saab, is now working on an AEW configuration for the MQ-9B drone, but there are no known U.S. orders for that capability at the time of writing. That platform will not offer the same level of flexibility and look-down capability as modern crewed AEW aircraft, either. Look-down AEW capability is only growing in importance today amid expanding and evoling drone threats, including to the U.S. homeland.

High demand for AEW support, in general, means that the U.S. military regularly steps to provide additional coverage with U.S. Navy E-2s and U.S. Air Force E-3s to aid in U.S. counter-drug operations around Latin America. Newer E-2D Advanced Hawkeyes notably have far more powerful radars than the E-2C or the P-3 AEW, with added surface search and track capability, too. At the same time, as mentioned at the start, those assets are in heavy demand, especially in light of the conflict with Iran. On top of that, the Air Force’s E-3 fleet is facing serious sustainment challenges itself, with replacement E-7 Wedgetail aircraft still years away from being delivered.

The Air Force, in particular, is also aiming to eventually push most, if not all, air moving-target indicator (AMTI) tasks currently performed by aircraft like the E-3 and E-7 into space. The service is heavily investing to accelerate the fielding of those capabilities, which could eventually offer revolutionary constant, persistent coverage globally. The first of those satellites are still not expected to reach an early operational state until 2028. It is possible that CBP could get access to a tailored data feed from this system when it does become operational. It still does not obviate the need to have crewed or uncrewed aircraft capable of more closely investigating tracks of interest using EO/IR cameras and other sensors.

Whatever the future might now hold, CBP’s unique time as the operator of the P-3 AEW aircraft has come to an end.

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