Determination of DA(H)

[shazapis]

Hello,

I am trying to find any regulatory reference to the need to add 50 feet to the MDA(H) of an NPA in order to determine the DA(H) for the CDFA technique.

I have had no luck thus far, although everybody tells me (referencing their ops manuals though, not a regulation) that this is indeed a requirement when flying a NPA using CDFA.

Any assistance will be greatly appreciated

Regards,

Spiros Chazapis
Athens, Greece