WHEN?

If you're not scheduled to fly in the next few days, then my suggestion is to relax a bit. I would expect some "resolution" in that time frame after Boeing/regulators/airlines have gotten some initial data from the black boxes and they can make a "more" educated decision about whether the 2 incidents were in any way related to each other or to the general airworthiness of the aircraft. Further, external non-regulatory pressure (e.g., bookings, crew) may even drive AA/WN to (1) remove the planes from service temporarily, or even less severely (2) waive change fees and possibly fare differences for rebookings.