US Navy declares IOC for next-gen F/A-18 Super Hornet sensors

The US Navy has declared initial operating capability (IOC) status for a new infrared search-and-track (IRST) sensor system developed by Lockheed Martin for F/A-18 Super Hornet strike fighters.

As informed, the IRST21 IOC declaration is a milestone achievement in support of a full-rate production decision of the sensor system following successful flight tests by the US Navy.

At the core of this innovative system is IRST21, Lockheed Martin’s long-wave infrared search-and-track sensor. This latest version of the IRST21 system “significantly increases threat-detection range”, according to Lockheed Martin. On the Super Hornet, IRST21 is integrated into the front of the centerline fuel tank.

“Achieving IOC for IRST21 is a significant milestone and a testament to the strong partnership between Lockheed Martin and the U.S. Navy,” said Paul Hey, director of Lockheed Martin’s IRST programs.

“This advanced sensor provides a critical capability to detect and track airborne threats at greater distances, ensuring pilots can complete their missions with enhanced situational awareness and survivability.”

“With this game-changing leap in passive sensing technology, IRST21 will fundamentally reshape how air warfare is conducted while keeping pilots ahead of threats,” shared Hank Tucker, vice president of Mission Systems for Lockheed Martin’s Sensors &Global Sustainment organization.

The US Navy brought IRST to the fleet through an evolutionary acquisition approach across two-phased blocks. In 2011, Block I integrated an existing IRST system onto the F/A-18 fuel tank, and in 2019, the fleet operated the system as a part of an early deployment. Block II added an improved sensor, an upgraded processor, and additional software, with a first deployment planned for 2025.

The full rate production decision is scheduled for spring 2025 to authorize the US Navy to fully outfit its carrier-based F/A-18E/F Super Hornet squadrons with IRST Block II.

F/A-18E/F Super Hornet entered fleet service in 1999, as the replacement for the F-14 Tomcat. The Super Hornet is the second major model upgrade since the inception of the F/A-18 aircraft program. The F/A-18E and F/A-18F are designed to meet the navy’s fighter escort and interdiction mission requirements.

F/A-18E/F enhancements include increased range and improved carrier suitability required for the F/A-18 to continue its key strike fighter role.