Aviation New software problem detected in Boeing 737 MAX Updated : June 27, 2019 09:55 AM IST The new issue involves software that is separate from changes to the aircraft's faulty flight-control system, called the Maneuvering Characteristics Augmentation System (MCAS). An FAA spokesman said the agency is following a thorough process and has no timeline for allowing the 737 MAX to return to service. Boeing believes it can resolve the issue with a software tweak. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.