My aunt is considering booking with Westjet for flights to London Gatwick for which only old Boeing 763sa are used. We both know that oldness of aircraft is not itself a problem, but Westjet's continual problems with their Boeing 763s:
are they unreasonably worse than average?
should they discourage avoiding not only the 763s, but Westjet in general? If the answer to 1 is 'yes', then Westjet appears immoral in allowing such defective airplanes to fly?
[CBC article of 2016/7/11 :] In a video posted to WestJet's internal YouTube channel on June 16, 2016, chief executive officer Gregg Saretsky explains the problem, calling the route a "hobbled operation."
"The 767s have been giving us lots of grief, lots of mechanical problems," said Saretsky in the video.
"We're finding that when things break, because some of the parts are so old, we don't have them in store. And then we're doing a global search through the AOG desk to find them and then it's taking two or three days to get these things. We don't want to keep them in stock because they break once every 20 years."