remoak
The problem is that the horizontal visibility was 300 metres at ground level up to 2 metres and 800 metres visibility is required from the Cat 1 DA of 357 ft with an actual QNH all the way down to the runway. Having experienced this type of fog in Anchorage a number of times and conducting auto lands off all of them, I wouldn’t recommend trying to manually land in these types of conditions unless your ass was on fire because of the insidious way the lack of horizontal visibility creeps up on you at the last minute. Unfortunately from what I gathered from the preliminary report I doubt the PIC realised his ass was on fire until it was far too late.