Boeing 777 conversions have begun a new North American chapter after Israel Aerospace Industries, Ascent Aviation Services and World Star Aviation announced the arrival of a Boeing 777-300ER at Marana, Arizona, on Oct. 22, 2026. The passenger aircraft is the first World Star jet to enter the newly established local conversion operation.
The partners said the airframe has arrived at Ascent’s expanded Pinal Air Park campus. The announcement establishes a new conversion location, but arrival at the facility is not the same as completing the modification, delivering a freighter or beginning cargo service.
Ascent plans to operate two parallel 777-300ERSF production lines under its agreement with IAI. The project adds large-aircraft modification capacity in Arizona at a time when cargo operators and lessors are examining alternatives to ordering newly built freighters.
Table of Contents
Boeing 777 Conversions Arrive in Marana
The joint announcement identifies Marana as the North American conversion site for IAI’s 777-300ERSF program. World Star Aviation supplied the initial passenger aircraft from its portfolio, while Ascent is responsible for the work at its U.S. maintenance and modification campus.
IAI develops the conversion program and its engineering package. Ascent brings local heavy-maintenance infrastructure, hangars and labor. World Star, an aircraft lessor, brings aircraft ownership and the commercial decision to place a passenger jet into a new cargo-oriented configuration.
The participants describe the arrangement as part of a broader global conversion network. They have not identified a completed aircraft from this new Arizona line or announced a firm handover date for the first Marana-converted 777. Those are later milestones, not events already achieved.
Two Widebody Lines and a $70 Million Expansion
Ascent says the program follows completion of two new widebody hangars measuring 90,000 square feet each. The company values the facility investment at $70 million and says the added space triples hangar capacity at Marana, supporting heavy maintenance alongside aircraft conversions.
The planned two-line operation is intended to increase the number of widebody conversions that can be worked on in parallel. That is production capacity, not a published annual delivery rate. Actual output will depend on work scopes, aircraft arrival schedules, certification compliance and customer acceptance.
The partners expect the expansion to support hundreds of skilled jobs in Southern Arizona, but their release does not provide a verified employee count already hired for the 777 program. The new facility therefore represents investment and an operating start rather than proof of full-rate production.
Why a Passenger Jet Becomes a Freighter
A passenger-to-freighter project repurposes an existing jet for cargo operations rather than building a new airframe. The 777-300ER offers a large fuselage and a long-range twin-engine platform, but a conversion still requires substantial modification, inspection and documentation before a customer can operate it as a freighter.
IAI describes the 777-300ERSF as a certified conversion program. That program-level status does not eliminate the need for work and return-to-service approvals on each individual airplane. Operators also need to equip the aircraft for their network, secure crews and determine where the resulting cargo capacity fits.
This development is separate from smaller narrowbody cargo additions, such as TAD’s report on Qantas A321 freighters. The two aircraft sizes serve different network requirements, highlighting why freighter demand encompasses both regional and long-haul markets.
FAQ: Boeing 777 conversions
Have Boeing 777 conversions started in Arizona?
Yes. IAI, Ascent and World Star announced the start of the Marana program on Oct. 22, with the first passenger aircraft delivered to the facility. A completed freighter was not announced.
How many conversion lines will Ascent operate?
Ascent plans two parallel Boeing 777-300ERSF lines. The company did not announce a confirmed annual delivery total for those lines.
Is the $70 million an aircraft purchase?
No. The announced $70 million refers to Ascent’s widebody-hangar expansion in Marana, not the purchase price of a converted aircraft.
Looking Ahead
The first observable next step is progress on the initial World Star airframe and its eventual handover after conversion. Boeing 777 conversions at Marana will be measurable by aircraft completions and customer deliveries; the companies have not provided a first-delivery date for this facility.
Sources
