- Six new F-35Bs entered service carrying ballast inside their noses as an alternative of radar
- The APG-85 delay created stealth fighters with out their major sensor
- Lot 17 redesign selections eradicated compatibility with older radar {hardware}
America Marine Corps has accepted supply of six newly constructed F-35B stealth fighters carrying ballast weights the place a radar must be put in.
The plane left manufacturing strains with out the AN/APG-85 radar that future F-35 variants are anticipated to depend on for fight operations.
As a substitute of delaying supply, officers accepted plane configured with lifeless weight occupying the nostril part reserved for the lacking gear.
A brand new radar arrives earlier than the plane can really use it
The bizarre state of affairs emerged as a result of Lot 17 plane had been redesigned across the forthcoming AN/APG-85 radar structure and mounting construction.
These modifications stop set up of the older AN/APG-81 radar, leaving no interim choice whereas the substitute stays unavailable.
The radar is to be provided by Northrop Grumman reasonably than prime contractor Lockheed Martin, additional complicating supply schedules.
Marine Corps Lieutenant Common Gregory Masiello knowledgeable lawmakers on June 23 2026 that solely six Marine plane at present lack put in radars.
Acceptance testing for these plane started in February 2026 after efficiently finishing manufacturing earlier within the yr.
Though the Air Power and Navy haven’t but obtained comparable plane, related deliveries are reportedly anticipated later this yr.
With out radars, the plane can assist fundamental flight familiarisation and pilot instruction actions whereas remaining unsuitable for fight operations.
The Joint Program Workplace defended the choice, stating the Pentagon “intentionally undertook a extremely concurrent improvement and manufacturing program for superior capabilities.”
“This choice was made with full understanding of the chance of getting manufacturing plane prepared forward of the capabilities.”
Delay exposes bigger questions round F-35 readiness
The lacking radar arrives amid wider issues surrounding operational readiness throughout the broader F-35 fleet throughout fiscal yr 2025.
In response to a current US Authorities Accountability Workplace evaluation, only about 25% of the F-35 aircraft achieved fully mission-capable status in 2025.
Plane able to performing no less than one assigned mission reached 44.1%, though this remained significantly beneath historic expectations.
Masiello stated he wouldn’t “dispute their numbers or how they do it” throughout congressional testimony discussing the findings.
Utilizing Joint Program Workplace calculations, he argued the mission succesful determine stood nearer to 56% throughout operational fleets as an alternative.
The delayed APG-85 radar types a part of the broader Block 4 modernization package deal that continues encountering schedule and integration challenges.
Future F-35 fashions would require extra cooling capability, as new methods will draw between 62 and 80 kilowatts, greater than double the 32 kilowatts present {hardware} consumes.
A next-generation engine that might have addressed this cooling hole was developed however in the end defunded after proving too pricey.
Present plans point out that the APG-85 will enter service round 2028 however significant cooling won’t arrive till after 2031.
The sight of stealth fighters carrying lead ballast as an alternative of radars might due to this fact turn out to be an everlasting image of latest defence procurement realities.
By way of Defence Industry
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