Boeing has temporarily suspended 777-9 test flights pending joint investigations with GE Aerospace into an unspecified issue on the aircraft’s GE9X engine.
Rolls-Royce and program partner airline EasyJet have conducted test runs on an AE2100 turboprop powered by liquid hydrogen rather than conventional jet fuel.
Operators of Rolls Royce Trent 800-powered Boeing 777s face mandatory fuel pump removals to correct an issue linked to thrust-loss incidents, EASA said.