
The consortium of Northrop Grumman and its subsidiary, Scaled Composites, along with BAE Systems, was among the most favoured teams to win the competition to replace hundreds of T-38 Talon trainers for the USAF under the T-X program.
The Northrop Grumman and their teammates were progressing well with their T-X entrant, which received the in-house name Model 400. The jet was first spotted at Mojave Air And Space Port, where Scaled Composites calls home, in late August of 2016. The company made no comment on the prototype even as low quality photos of it taxiing hit the web. Not too long after it took to the skies, but still the only indication from Northrop Grumman that it existed was them stating that the Model 400 prototype would be officially unveiled in early 2017.
Originally, Northrop Grumman intended to run with an updated version of BAE System’s Hawk T2 trainer, but that idea was axed when it was clear that the 40-plus-year-old design would not meet the USAF’s performance requirements. Following this change in strategy, Northrop Grumman’s design process became especially secretive—although it was widely known that Scaled Composites, acquired by Northrop Grumman in 2007, would be heavily involved.
Dubbed the Model 400, the aircraft looks like a modernized, composite hybrid of the T-38 Talon and the F-20 Tigershark. It packs a single F404-GE-102D engine, a derivative of the same engine used in the F/A-18A/D, the JAS-39A/D (Volvo RM12), the F-117A, and India’s Tejas light fighter—as well as Lockheed’s T-X competitor, the T-50A.
The engine/airframe appears to lack an expanding nozzle usually indicative of an afterburning capability.
Ultimately, this design can potentially be pitched as an entirely new aircraft while still leveraging Northrop’s hugely successful T-38 Talon lineage.
Just around the time that the company was supposed to officially unveil their exciting new T-X contender, one that had been flying for some time at that, the company canned its participation in the T-X program entirely. The move was startling to say the least, with Northrop Grumman not only giving up the possible opportunity to build at least 350 new tactical jets—an opportunity that is becoming increasingly rare—but also giving up on 50 plus years of pilot training heritage.

A statement by Northrop Grumman reads:
“Northrop Grumman and its principal teammate BAE Systems have carefully examined the U.S. Air Force’s T-X Trainer requirements and acquisition strategy as stated in the final request for proposals issued on Dec. 30, 2016. The companies have decided not to submit a proposal for the T-X Trainer program, as it would not be in the best interest of the companies and their shareholders.”