> It makes me wonder if there wasn't someone who was fixing these as they came up in the 4 hour window, and he just happened to be off that day.
This is very possible. I know of a guy who does (or at least a few years ago did) 24x7 365 on-call for a piece of mission (although not safety) critical aviation software.
Most of his calls were fixing AWBs quickly because otherwise planes would need to take off empty or lose their take-off slot.
Although there had been some “bus factor” planning and mitigation around this guy’s role, it involved engaging vendors etc. and would have likely resulted in a lot of disruption in the short term.
This is very possible. I know of a guy who does (or at least a few years ago did) 24x7 365 on-call for a piece of mission (although not safety) critical aviation software.
Most of his calls were fixing AWBs quickly because otherwise planes would need to take off empty or lose their take-off slot.
Although there had been some “bus factor” planning and mitigation around this guy’s role, it involved engaging vendors etc. and would have likely resulted in a lot of disruption in the short term.