The Navy's competition to replace its T-45 Goshawk trainer fleet now has one known bidder, after Sierra Nevada Corporation walked away and left the Textron Aviation Defense and Leonardo team, offering the M-346N, alone in the field, The Aviationist reported. SNC confirmed it did not submit a proposal for the Undergraduate Jet Training System (UJTS) before the Oct. 30 deadline, a development first reported by Breaking Defense. Textron confirmed it had submitted its M-346N proposal.

The Navy has not selected a winner, and nothing has been awarded. But a program that drew Lockheed Martin, Boeing, Northrop Grumman and SNC has narrowed to a single offeror backed by an established aircraft manufacturer, and that changes the procurement's dynamics well before any source selection.

Why SNC Declined to Bid on UJTS

SNC framed its exit as a judgment about the deal on offer rather than about the aircraft. According to the statement carried by The Aviationist, the company said it "could not responsibly bid the UJTS program under the current contract structure." It left the door open, saying it remains "committed to naval jet training and stand ready to re-engage if the approach is revisited."

The statement does not identify which terms drove the decision. It does put the problem on the Navy's acquisition approach: if the service revises the contract structure, SNC has said it wants back in.

SNC had been pursuing the contract with its Freedom trainer, a clean-sheet design it unveiled at the 2025 Tailhook Symposium in Reno, Nevada. The Defense Post reported that SNC had partnered with General Atomics Aeronautical Systems on the bid. Northrop Grumman joined the team in February but withdrew in September, leaving SNC and General Atomics to continue without it.

Freedom was built around carrier-representative training. The Aviationist reported that SNC highlighted a reinforced trailing-link landing gear and a 16,000-hour service life airframe, designed to handle carrier touch-and-go landings and Field Carrier Landing Practice (FCLP) to touchdown. The company also claimed 40% lower engine-related expenses than the T-45. Those features ran ahead of what the Navy now requires. In March 2025, the service said FCLP would be required only to the point of wave-off, with virtual training systems filling the gap, and it had earlier dropped the requirement for actual carrier landings.

How the T-45 Replacement Field Shrank to One Team

SNC's withdrawal is the last in a string of exits across 2026. Lockheed Martin left first, in April, abandoning a proposal based on the TF-50N it developed with Korea Aerospace Industries. Boeing followed in June. According to The Aviationist, Boeing said it determined that its T-7A Red Hawk did not meet the Navy's requirements; The Defense Post reported that Boeing and Saab dropped the T-7A offering together. Northrop Grumman left SNC's team in September.

That left SNC and the Textron-Leonardo team as the only two competitors as the deadline approached. AVweb described the Textron Aviation Defense and Leonardo pairing as "the only known remaining competitor backed by an established aircraft manufacturer."

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The Defense Post said Textron's M-346N "appears to have a clearer path toward the contract, although the US Navy has yet to announce a selection."

What the Navy Is Buying With UJTS

The program covers up to 216 advanced jet trainers and a simulator package, according to Defence Industry Europe, with deliveries scheduled to begin in 2032. The new jet replaces the T-45 Goshawk, which has trained Navy and Marine Corps aviators since the early 1990s.

The new trainer will not be required to operate from aircraft carriers, unlike the T-45. Defence Industry Europe reported that the carrier phase of training is instead intended to take place in simulators and in the operational aircraft that pilots will ultimately fly. That requirement shift plays to a land-based design with a naval training system wrapped around it, the kind of offering the M-346N team describes.

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The Aviationist reported that the team markets the Beechcraft M-346N as a "ready-now" solution. If selected, the jet would be assembled at Textron's plant in Wichita, Kansas. The team points to more than 100 M-346 aircraft in service and over 150,000 flight hours logged worldwide, and Textron says the M-346 and its integrated training system serve 20 users globally. The naval version would add a Live Virtual and Constructive (LVC) system that merges real and virtual training.

When Will the Navy Award the UJTS Contract?

Later than it first planned. The Aviationist reported that the Navy now intends to award the UJTS procurement contract in the fourth quarter of fiscal 2027. The award was initially planned for March 2027 and later shifted to July before the latest change. AVweb, citing Breaking Defense, put the new window between July and September 2027.

The Navy launched UJTS in 2020 and has said it wants the aircraft on an accelerated timeline because of continuing problems with the T-45, in service since 1991. A single-offeror field and a slipping award date pull in opposite directions on that goal: one bidder can simplify evaluation, while the schedule has already moved twice.

What It Means for Contractors

For the Textron-Leonardo team, the path to an award is clearer, but the Navy still has to evaluate the proposal against its requirements and decide. A sole remaining offeror does not guarantee a contract, and the service has not signaled whether it will proceed with one bid or revisit its approach, as SNC has invited it to do.

For suppliers and subcontractors, the M-346N team is now the one to watch. Wichita final assembly would put work in Kansas, and a buy of up to 216 jets plus simulators would ripple through training-system, avionics and ground-based simulation supply chains on a delivery schedule starting in 2032.

For the broader industrial base, the UJTS withdrawals carry a lesson about contract structure. Lockheed Martin, Boeing, Northrop Grumman and SNC each left the competition, and SNC's statement pointed directly at the terms of the deal. Contractors weighing future Navy aviation competitions should read the Navy's next move closely: if the service revises the UJTS structure, SNC has said it is ready to return, and the competition could reopen.

Sources