U.S. Ships Radarless F-35Bs, Exposing a Readiness Gap in Its Frontline Fleet
The Pentagon has confirmed delivery of six Marine Corps F-35B jets without radar systems, acknowledging they cannot be considered fully mission capable until a delayed next-generation AN/APG-85 sensor enters production in 2028. The stopgap move shines a light on the strain between U.S. procurement timelines and frontline readiness as Washington leans heavily on the stealth fighter for deterrence from Europe to the Pacific.
Six of America’s most advanced fighter jets are arriving in the fleet without one of their most basic senses — radar — in a decision that underscores how modernization delays can punch holes in front‑line readiness.
The Pentagon has confirmed that six Marine Corps F‑35B short takeoff and vertical landing aircraft have been delivered without radars due to delays in the production of the new AN/APG‑85 system, according to comments by F‑35 Joint Program Office chief Lt. Gen. Gregory Masiello. The advanced radar is not expected to begin production until April 2028, leaving a multi‑year gap between airframe delivery and full sensor capability for these jets.
Masiello acknowledged that the radarless aircraft cannot be considered fully mission capable. In practice, that means jets designed to be key assets in any high‑end conflict — from deterring China in the Western Pacific to reinforcing NATO’s eastern flank — currently cannot perform the full spectrum of air‑to‑air and air‑to‑ground missions they were built for. They can be used for pilot training, maintenance practice, and some limited tasks, but their operational value is sharply constrained.
For Marine aviators and planners, the issue is more than a technical footnote. The F‑35B, with its ability to operate from amphibious assault ships and short, rough runways, is central to U.S. concepts for dispersed operations in contested environments. Without a functioning radar, those aircraft lose much of their advantage in detecting threats, coordinating with other assets, and delivering precision weapons in bad weather or at long range.
The decision to accept airframes without their primary sensors reflects the pressure on the Pentagon to keep the massive F‑35 production line moving even as key systems evolve. Integrating a new radar into a stealth fighter is complex, and delays in one contractor’s development or testing schedule can ripple through the entire program. Parking finished jets until the radar is ready would create its own bottlenecks and costs; fielding them now effectively shifts the delay from the factory floor to the squadron flight line.
Strategically, the episode exposes a tension between the United States’ ambition to field cutting‑edge, highly integrated platforms and the realities of maintaining a credible force in the near term. Rivals such as China and Russia watch these delays closely, looking for windows in which U.S. capabilities lag behind planning assumptions. Allies, meanwhile, rely on U.S. airpower as the backbone of their own defense postures and may quietly question how many of the jets on paper are truly combat‑ready.
For taxpayers and defense policymakers, radarless F‑35s also sharpen long‑running debates about cost, complexity, and accountability in major weapons programs. The F‑35 has faced years of criticism over expense and reliability. Delivering any variant in a configuration that the program’s own leadership concedes is not fully mission capable raises new questions about how risk is being managed and communicated.
The key insight is stark: in modern air warfare, sophisticated airframes without mature sensors are like race cars on bald tires — impressive in theory, but constrained when it matters. Readiness is ultimately measured not by delivery ceremonies, but by how many jets can generate full‑spectrum combat power on short notice.
Critical markers to watch now include how the Marine Corps employs these radarless F‑35Bs in the interim, whether additional jets are delivered in similar condition, how quickly integration of the AN/APG‑85 proceeds toward its 2028 target, and whether lawmakers or audit bodies push for tighter oversight of how partial‑capability aircraft are counted in U.S. force planning.
Sources
- OSINT