American Airlines resumes flights after brief grounding ahead of busy Christmas travel

By Utkarsh Shetti, Abhijith Ganapavaram and David Shepardson (Reuters) -American Airlines said on Tuesday its flights had resumed after a technical glitch forced the carrier to issue an hour-long ground stop, disrupting travel for thousands on Christmas Eve, one of the busiest periods of the year. The issue that briefly affected the carrier's ability to get its planes in the air involved network