Boeing Takes Test Aircraft ZA004 Out Of Storage For 787-9 Engine Trials

By Guy Norris
Source: Aviation Daily

A Package C engine successfully completed a 150-hr. endurance type test and FAA over-temperature test in Derby, U.K., late last year just as various elements of the upgrade began flight tests on the Rolls-Royce 747 flying testbed in Tucson, Ariz.

Flights on the testbed have been conducted in three main phases, culminating with a recent full-up Package C configuration. Early flights involved tests of a hybrid Package B engine incorporating the tip clearance controls of the newer powerplant in one instance, and the revised compressor in the other.

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