U.S. Navy Advances E-130J and MQ-25 Programs Amid Rising Costs and Delays
The U.S. Navy is set to introduce 31 E-130J aircraft as part of its Tacamo program, with costs projected at $361 million each. Meanwhile, the MQ-25 Stingray unmanned drone faces further delays in achieving operational capability, now expected in February 2029.

The U.S. Navy's E-130J program is confirmed to procure 31 aircraft, comprising six developmental models and 25 for procurement, with a total estimated cost of $10.6 billion for RDT&E and $9 billion for procurement.
A critical design review for the E-130J is scheduled for September 2027, with production decision anticipated in August 2029. The Navy's current fleet of E-6B Mercury aircraft will be replaced by the E-130J, expected to enhance submarine communication capabilities.
In parallel, the MQ-25 Stingray program has seen its initial operational capability date postponed to February 2029, with the first production aircraft having flown in April 2026. Development began in 2006, focusing on aerial refueling, allowing it to support multiple F/A-18 Super Hornets per sortie.
The integration of the Unmanned Air Warfare Center aboard the Theodore Roosevelt marks a significant step, though full operational integration remains pending. Emerging risks identified by the Government Accountability Office could impact both programs.




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