FORT WORTH, Texas—Mammoth Freighters LLC has received certification from the Federal Aviation Administration (FAA) for its 777-200LRMF (Long Range Mammoth Freighter), a Boeing 777-200LR passenger-to-freighter conversion.
The FAA approval validates the aircraft’s design, engineering, and performance, allowing it to enter commercial service. This development follows extensive testing, including final flight tests that began last week and were set to continue for another week to 10 days. Brian McCarthy, vice president of marketing and sales at Mammoth Freighters, stated that all ground and flight testing proceeded without issues, with reports planned for submission to the FAA by month’s end.
The certification process involved Type Inspection Authorization (TIA) and audits by the FAA, primarily using Designated Engineering Representatives (DERs). The 777-200LRMF offers a maximum gross payload of 233,000 pounds and a maximum takeoff weight of 766,000 pounds. Mammoth’s order book includes 35 firm orders, with Jetran Ltd. holding most 777-200LR orders and end users such as Qatar Airways and DHL. Avia Solutions Group has six 777-300ER orders, with certification for that variant expected shortly after, potentially in early 2026.
Previous updates indicated test flights throughout August and ground smoke detection tests completed successfully. A U.S. government shutdown briefly delayed progress, but Mammoth remained engaged with FAA representatives to meet timelines.