thanks I-FORD
thanks to everybody
I'll try to setup a scenario to explain my question:
I'm planning to land on a fully equipped airport for a CAT 3 with a current wx of 350 mt RVR and a low Ceiling the ATC to permit the operation of acft equipped with CAT 2 only is broadcasting on ATis CAT 2 operations in progress.
In the notams no degradations of CAT 3 capability of the afld.
To avoid the possibility of encounter a cloud just at DH are you allowed to lower you DH to 50 ft?