I had just seen part of the inaugural take off of the Boeing 787 Dreamliner on tv.
There appears to be a Radarbox currently online in the Washington state area. Does anyone know if the unidentified Boeing aircraft with the callsign BOE928 be the 787?
This plane has vanished now though it may return later. It had been flying at FL410 down the Pacific coast, which, to me, seems to be a bit high for a first flight, though I may be wrong.
Amendment. That was the wrong plane. I've found it. See the screenshot for the 787.