This was missed back in November - Charter flights likely for TSMC employees:
China Airlines yesterday (01NOV22) launched nonstop Taipei Taoyuan – Phoenix service, scheduled as regular charter flights. Based on schedule listing including China Airlines’ website, the A350-900XWB is scheduled to operate this route from Taipei every 14 days on Tuesdays (except first quarter of 2023) with following schedule. As of 02NOV22, at least 7 charter flights are listed.
CI036 TPE1335 – 1040PHX1200 – 1225LAX 359
From Taipei, the A350 departs on following dates:
Nov 2022 – 01, 15, 29
Dec 2022 – 13, 27
Jan 2023 – 10
Mar 2023 – 07
More:
https://www.aeroroutes.com/eng/221102-cinw22phx