1st flight of the 787-10 #Dreamliner will be Mar. 31 subject to weather & other factors. Follow the webcast live at: https://t.co/BVEVhv9A37 pic.twitter.com/4DEfMgK64i— Boeing Airplanes (@BoeingAirplanes) March 22, 2017
This is all weather dependent. I expect that Boeing will fly ZC001 (LN 528, N528ZC) to Boeing Field by April 10th to start flight and certification testing of the 787-10. This process should take about year. Currently the second 787-10 (GE powered) is due to roll out of the Charleston assembly building 88-30 today and the last 787-10 flight test aircraft should start final assembly in early April and should be flying around late May.
In the meantime, Boeing has been continuing flight tests of the Trent 100 TEN engine on ZA004 (N7874, LN 004) which is the engine that is fitted to ZC001.