And as for the AC diversion to SEA.....

Incident: Canada B788 at Vancouver on Nov 3rd 2019, autoland fault and low fuel indication

By Simon Hradecky, created Thursday, Nov 7th 2019 20:29Z, last updated Thursday, Nov 7th 2019 20:29Z

An Air Canada Boeing 787-8, registration C-GHPQ performing flight AC-125 from Toronto,ON to Vancouver,BC (Canada) was on a visual approach to runway 08L when the crew initiated a go around due to low visibility and requested and was granted an ILS CAT 3 approach to runway 08L. On short final to runway 08L the crew received a "NO AUTOLAND" message and went around again, during the go around an "insufficient fuel" advisory was displayed. The crew declared PAN PAN in order to receive a straight in approach to one of Seattle's runways 16 while runways 34 were in use. The aircraft landed safely on Seattle's runway 16L.

The Canadian TSB reported the aircraft landed with 2800kg of fuel remaining, 800 kg above minimum fuel.

The occurrence aircraft continued to Vancouver the following day after about 15 hours on the ground in Seattle.

https://flightaware.com/live/flight/...025Z/CYYZ/CYVR