Eh, it was struck by lightning. It lost several non–critical systems as a result. Both the HUD and the primary flight display turned off and came back on a few seconds later. Both showed numerous error messages and warnings when they came back on. Both failed a second time before he could read or understand all of the warnings. It was certainly suboptimal, but not necessarily indicative of a poorly designed or engineered aircraft. The report had several recommendations that were redacted; probably at least one of those was recommending specific fixes to make the display systems more reliable in the event of a lightning strike, or to make them recover more gracefully.