Created Monday, Mar 28th 2022 19:25Z, last updated Monday, Mar 28th 2022 19:25Z
A Western Global Airlines McDonnell Douglas MD-11 freighter, registration N545JN performing flight KD-7326 from Anchorage,AK to Chicago O'Hare,IL (USA), was enroute at FL330 near Whitehorse,YT (Canada) when the crew received an "AC TIE 1" alert. About 30-60 minutes later the crew received additional multiple system warnings, alerts and failure indications including the #2 display unit, autopilot and flight director. The crew declared MAYDAY, worked through several checklists and eventually restored the electrical power and the failed systems. Once the systems were restored the crew cancelled MAYDAY and continued to Chicago with the AC Bus TIE 1 and DC Bus Tie 1 off. The aircraft landed without further incident about 3:45 hours after the onset of trouble.
The Canadian TSB reported: "The operator's maintenance subsequently inspected the aircraft and replaced both flight control computers (FCC)."
