Originally Posted by cougar

That's not accurate. Cat II/III approaches may continue if established on the FAS. From a previous post:



This is also explicit in AC 120-118 and OpSpec C060: C060 g. Operating Limitations. "(f) Once established on the FAS, all operations conducted using automatic rollout systems, or FP HUD rollout guidance, may continue if any RVR report decreases below the authorized minimums."

Some countries have specific caveats to this. For example, in the UK, the approach may be flown regardless of the WX/RVR but may not descend below a 1000' AFE if the weather is below minimums. Conversely, the approach may continue if below 1000' and the weather degrades below the applicable minimum.