C-130J deliveries paused due to technical issues, Air Force says

WASHINGTON — Deliveries of Lockheed Martin-built C-130J aircraft to the US Air Force have been halted due to a problem with integrating a new communications upgrade, according to the service.

“This issue involves a component incompatibility that was discovered during testing,” an Air Force spokesperson told Breaking Defense. “Aircraft deliveries are temporarily paused to ensure every C-130J meets the rigorous safety, performance, and airworthiness standards required before the US Government can accept them.”

The delay was first reported by Aviation Week.

The C-130J is the latest generation model of Lockheed Martin’s C-130 program, typically acquired as a replacement for older models. The tactical airlifter is operated by militaries around the world, and is slated to take on roles for the Pentagon like the TACAMO mission for maintaining secure communications with nuclear ballistic missile submarines.

Breaking Defense has requested additional information from the Air Force, such as an expected resolution date and a total number of aircraft affected. According to Aviation Week, no aircraft were delivered in the fourth quarter of 2025, and only two were delivered in all of 2025, but appropriators gave the Air Force $976 million for six new aircraft for the Air National Guard in the fiscal 2026 budget.

The delay comes amid widespread expansion of the worldwide C-130J fleet. Taiwanese state media has recently reported a purchase of 10 new aircraft for its Air Force, and Mexico was announced as the first Latin American operator of the C-130J in January. 

Lockheed Martin did not respond to a request for comment by publication.

Michael Marrow contributed to this report.