United’s Brand-New 787 Grounded Again After Fix, TCAS Troubles Persist

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Source: PYOK
United’s Brand-New 787 Grounded Again After Fix, TCAS Troubles Persist
Photo: PYOK
TL;DR Summary

United Airlines’ freshly delivered Boeing 787-9 Dreamliner (N61101) has been grounded again due to persistent TCAS (collision avoidance) system problems. After emergency diversions and a late-June 10-day maintenance stint at Boeing’s Moses Lake facility to address TCAS antenna issues, the aircraft was returned to service on June 30, but a July 3 flight UA-939 was canceled as a precaution while troubleshooting continued. The incident highlights teething pains with a high-end new-aircraft rollout as United pushes its Elevated cabin program.

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