A Boeing 787-9 destined for Lufthansa will serve as the 2026 ecoDemonstrator Explorer, conducting flight tests from late July through mid-August 2026 at the Glasgow, Montana facility to validate a Next-Generation Inlet for Rolls-Royce Trent 1000 engines[1][2]. This shorter, lighter nacelle integrates advanced acoustic treatment to resolve the drag-weight-noise trade-off while Intelligent Operations flight paths optimize departure and arrival procedures to reduce community noise and fuel burn[1][3]. The campaign, executed under FAA CLEEN Phase III, marks the first use of a Lufthansa-configured 787-9 with Trent 1000 engines as an ecoDemonstrator prior to delivery, with the aircraft entering the long-haul fleet after testing concludes[1][2]. Data on acoustic performance and fuel-burn metrics will feed into Boeing’s technology roadmap and CLEEN deliverables by end-2026[8].