United’s new Boeing 787-9 Dreamliner grounded again over continued TCAS antenna problems after return to Boeing
United says its brand-new 787-9 Dreamliner—configured with Polaris Business Class suites and Polaris Studios—has been grounded again over reported TCAS antenna issues. Multiple sources indicate the aircraft had recently been sent back to Boeing for maintenance fixes, but problems persisted, driving another out-of-service status.