Mammoth Freighters sets out plans for B777 freighter conversions

By Damian Brett

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Recently-established Mammoth Freighters has revealed plans to launch Boeing 777-200LR and 777-300ER passenger-to-freighter conversion programmes.

The company was founded in December 2020 by Bill Wagner and Bill Tarpley, and is backed by private investment funds managed by Fortress Investment Group LLC and its affiliates.

Mammoth has launched its Supplemental Type Certificate (STC) development programme with the plan to achieve US Federal Aviation Authority approval in the second half of 2023.

As well as offering aircraft owners conversion services for their own assets, it will also convert 10 B777-200LR aircraft from its stock of ten of the model acquired from Delta Air Lines.

“The Company, which possesses a Boeing data license to execute 777 passenger-to-freighter conversions, has already made significant progress since it began operations in late 2020. Design and engineering for the 777-200LRMF programme is well underway with tooling and parts already in fabrication,” Mammoth said.

“The conformity B777-200LR recently completed a comprehensive series of pre-modification flight tests and will commence modification in the second quarter of 2022.

“Upon certification of the B777-200LRMF, Mammoth expects approval of the B777-300ERMF STC to follow shortly afterwards.”

Tarpley said that all models of the B777 with GE90-110/115 engines are “renowned for having superior operating economics” compared with the B747-400 and MD-11 fleets and, as freighters, both the B777-200LR and B777-300ER “have a bright future in supporting global air cargo demand”.

Wagner added: “We have assembled a distinguished team of over 100 design, engineering, certification, production, operational, and sales professionals with significant experience in converting Boeing passenger aircraft to freighters.”

In mid-August, IAI started structural work on the first-ever B777 freighter conversion.

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