A Boeing 777 is huge. Just one 777 can carry President Trump, all 435 U.S. Congresspeople, all 100 U.S. senators, and the Supreme Court—with room to spare. But a new version from Fort Worth-based Mammoth Freighters can’t even carry a mayor.  Passenger seats? Zero. Overhead bins? Nope. Seatback movies? Zilch. Instead, the 777-200LRMF offers a clean sweep fore and aft—ready to transport over 100 metric tons of cargo worldwide.

And now that variant—the 777-200 Long Range Mammoth Freighter—has received FAA certification, clearing it for commercial service.

Mammoth’s mammoth new freighter got that certification by delivering what the company calls “a compelling combination of long-range capability, payload efficiency, and operational reliability, positioning it as a highly versatile solution for global cargo networks.”

No seats in sight: Inside the Mammoth 777-200LRMF. [Photo: Mammoth Freighters]

An enormous cargo door—and advanced cargo handling

Built on the proven Boeing 777 platform, the aircraft incorporates Mammoth’s proprietary conversion design. It features the largest main-deck cargo door in its class, a reinforced floor structure, and an advanced, flexible cargo handling system. Its long-range performance and fuel efficiency optimize the aircraft for both long-haul and regional freight operations.

Mammoth Freighters CEO Bill Tarpley said the certification “reflects years of disciplined engineering, close collaboration with the FAA, and the dedication of our entire team and partners.”

“Approval of the 777-200LRMF underscores the strength of our technical approach and our ability to deliver a high-performance freighter that meets the evolving demands of cargo operators worldwide,” he added in a statement. 

Eyeing customers from DHL to Qatar to Ethiopia

Jetran—a Texas-based aviation company specializing in aircraft leasing, sales, and fleet acquisition/optimization—is the first customer lined up for Mammoth’s 777-200LRMF.

“As the launch customer for the 777-200LRMF, this milestone marks an important moment for both Mammoth Freighters and Jetran,” Jordan Jaffe, CEO of Jetran, said in a statement. “From the outset, we’ve had strong confidence in the Mammoth engineering team and their vision for the program.”

Jaffe said the aircraft’s quality and technical execution have met Jetran’s high expectations, reflecting the strength of the underlying design.

“We believe the Mammoth conversion will be a competitive and compelling option in the long-haul freighter market and will deliver solid value for Jetran’s customers—including DHL, Qatar Airways, and Ethiopian Airlines.”

Founded in 2020 amid global supply-chain crisis

Mammoth Freighters was founded in December 2020 during the darkest days of the Covid-19 pandemic and the resulting global supply-chain crisis. Its mission was to design, develop, certify, and support passenger-to-freighter conversions, with an initial focus on the Boeing 777 platform, including both the 777-200LR and 777-300ER variants.

Mammoth’s converted 777 freighters are designed to deliver “industry-leading productivity, range, and operating economics for long-haul cargo operations,” the company said.

Five production lines in Fort Worth alone

A Boeing Licensee for the 777, Mammoth is developing a global conversion and production network with capacity for up to seven production lines. That includes five lines at Aspire MRO at Fort Worth Alliance Airport, and two lines at STS Aviation Services UK Limited in Manchester, England. Additional expansion is planned in the Asia-Pacific region, the company said.

Mammoth also operates engineering offices in Rancho Bernardo, California, and Portland, Oregon.

With certification achieved, Mammoth said it’s now positioned to begin aircraft deliveries and entry into service, further strengthening its growing portfolio of passenger-to-freighter (P2F) solutions. The company said it’s continuing to make progress on its 777-300ERMF program and expects FAA certification of that variant later this year.

NYC-based financial backing

Mammoth Freighters is backed by funds managed by affiliates of NYC-based Fortress Investment Group. 

Drew McKnight, co-CEO and managing partner at Fortress, said the FAA’s approval of the 777-200LRMF “underscores the success of the company we began building five years ago and validates Mammoth Freighters’ world-class engineering and disciplined capital investment.”

“This certification is a great example of private industry collaborating with the FAA to strengthen American aviation and build a great American company,” McKnight added. “With a fully integrated U.S.-based production platform, Mammoth Freighters is built to meet sustained global demand for freight aircraft in the decades ahead. We’re proud of the Mammoth Freighters team and look forward to supporting their continued success.”

Don’t miss what’s next. Subscribe to Dallas Innovates.

Track Dallas-Fort Worth’s business and innovation landscape with our curated news in your inbox Tuesday-Thursday.