Commercial Fixed Wing
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 192; Flight Crew Total 7731; Flight Crew Type 7731
Situational Awareness; Workload; Confusion; Distraction; Fatigue
Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification; General Flight Cancelled / Delayed
Aircraft; Airport; Company Policy; Environment - Non Weather Related; Human Factors; Procedure; Weather
Second leg day two of a four day [trip]. First leg was a challenge due to weather issues. Second leg was a domestic flight. We transitioned from international terminal to domestic through walk and bus system. The First Officer tried to use Mobile Passport app for reentry into US and had some problems. We met at the aircraft. I was busy getting the aircraft ready and the First Officer proceeded to walk around. We were anti iced at the gate. We were never told to prepare the aircraft for de ice and was not configured for the procedure when told it was completed. There was some confusion on our part about dispatching into known severe turbulence and I called the Dispatcher to discuss. It was explained to me that WSI was controlling weather source and not ATIS. WSI had no severe turbulence information so we proceeded. After takeoff ATC informed us that a another air carrier reported severe turbulence at FL210. We leveled off a FL190. The flight attendants were briefed to stay in seats until contacted otherwise. I called the Purser to inform him they were to stay in seats for duration of flight. Passengers were informed to stay in seats and the seatbelt sign was kept on for duration of the flight. We were unable to land at our destination so we diverted and desired to write the aircraft up in logbook for a severe turbulence encounter. There was much miscommunication regarding unable to continue; fatigue; and Maintenance; [that was] needed prior to aircraft being released. This was all my fault. We were definitely rattled after turbulence encounter. The First Officer and I both had had enough or the day.
Air carrier Captain reported after improper anti deicing procedures on the ramp; security issues in the terminal; unanticipated severe turbulence encounters; and a diversion the crew declared too fatigued to continue.