Mammoth Freighters has hit another milestone in its efforts to get its 777-200LRMF converted freighter model to market.
The company is undertaking final test flights as it progresses towards Supplemental Type Certification (STC) for the aircraft.
“The Mammoth 777-200LRMF is back in the air for its final certification flight tests,” sad Mammoth in a LinkedIn post at the end of last week.
Fort Worth, Texas-headquartered Mammoth told Air Cargo News in August that it had been carrying out company and formal Federal Aviation Administration (FAA) test flights for the 777-200LRMF and planned to complete these by early October.
Mammoth completed the initial test flight of the 777-200LRMF prototype in May.
After data from the test flights is submitted to the FAA, Mammoth will need to be granted Type Inspection Authorization (TIA).
It will then be able to hand over its first 777-200LRMF to launch customer Qatar Airways Cargo. The airline earlier this year signed an agreement for five of the aircraft with Texas-based lessor, Jetran.
Meanwhile, Mammoth is expected to complete flight testing for its first Boeing 777-300ERMF freighter conversion by the end of the year, to then proceed to TIA.
Currently, Mammoth has seven 777-200/-300 aircraft undergoing conversion: five at Aspire MRO in Fort Worth, Texas, and two at STS Aviation Services in Manchester, UK.
There are currently three 777-300ER conversion programmes in place with IAI, KMC and Mammoth, in addition to the 777-200LR programme in development with Mammoth.