PPRuNe Forums - View Single Post - Cat 3 revert to Cat 2
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Old 2nd Apr 2021, 13:53
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eckhard
 
Join Date: May 2005
Location: France
Age: 69
Posts: 1,142
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A good question and normally answered in the sim by, "it's probably an airfield thing and ATC will advise that they're now only Cat 2 capable".

Some research revealed the following unlikely additional scenario applicable in Canada:

Reported RVR 1200/600/600. Aircraft starts a Cat 3 approach. Required RVR 600/600/600

Reported RVR then drops to 1200/600/500. Cat 3 no longer possible as all three RVRs are required to be 600 or greater.

Cat 2 approach possible, as required RVR is 1200/600/advisory.
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