Boeing may be saying 10 days for an update to be ready to install but the installation is likely to stretch the timeframe out. Note also that the FAA has stated that " The grounding will remain in effect pending further investigation, including examination of information from the aircraft’s flight data recorders and cockpit voice recorders." This from the FAA website and referencing ET302 boxes. Given the position this puts the FAA and French led discovery process in, a sofware update and installation may not be sufficient for certification authorities to rescind the grounding order. This presents an interesting dynamic since those boxes are now in BEA's hands which leads me to wonder,
1) At what point will BEA be comfortable with its findings since the FAA is stating the grounding will remain in effect pending 'further investigation' to which there is no current timeframe or specified endpoint from the FAA's wording;
2) Is any 'fix' sufficient to allay airline concern about the fundamental airworthiness of the Max? If airlines can't fill the seats on the type because of the enormous press coverage of two horrific accidents, what then? The press coverage and viral responses are not comparable to any other sequence of accidents for any other type;
3) Is any fix to MCAS sufficient for crews that fly the aircraft to be comfortable in the safety of the type or will there still be some crew who have a little voice in the back of their heads saying 'oh s**t, a Max on this leg (and I do not refer to capability of crew, but workload of maybe a tired crew on their last leg of the day with just another pay attention to jolt)?