It is unfortunate for the pax, but that kind of thing happens once in awhile. All airlines have that problem. All I know is that the Auto pilot was reset in HNL and then when it landed in Kona the error message came on again. Since we contract our mx with United in Kona, we had to wait for mx in Kona to fix it, which took 4 times longer than it should have. When the AC got back to HNL a IOC was replaced. I do know that the pax were taken care of monetarily. ^