Reference: Regulation (EU) No 965/2012 on Air Operations, Annex IV (Part CAT)
Please note that the rules on CDFA are now specified in the following rule of Regulation (EU) 965/2012: CAT.OP.MPA.115 Approach flight technique - aeroplanes. To this implementing rule, three AMCs and one Guidance Material are assigned.
AMC1 CAT.OP.MPA.115 (a)(5) specifies the following: “This DA/H should take into account any add-on to the published minima as identified by the operator's management system and should be specified in the OM (aerodrome operating minima).” This means that the use of any add-on is left to the responsibility of the operator.
Usually, the operator should avoid going below DA/H if the missed approach is initiated. Therefore, (a)(7) specifies: “The operator should establish a procedure to ensure that an appropriate callout is made when the aeroplane is approaching DA/H. If the required visual references are not established at DA/H, the missed approach procedure is to be executed promptly.”