rudderrudderrat
That is correct as your manuals will currently written in accordance with approach calculations based on Appendix 1 (Old) to OPS 1.430; the DA associated with a NPA are calculated in accordance with Appendix 1 (New) to OPS 1.430. The New rules will come into effect by 2011.
Approach chart producers are having to update all minima in accordance with the new rules and for a while you will see minima as JAR-OPS and EU-OPS. The EU-OPS minima are calculated using the new rules.
Your operator should specify that you can only use the old minima (JAR-OPS)until all your approaches are calculated in accordance with Appendix 1 (New) to OPS 1.430. Once that is done, you will only be able to use the new minima; at which point the entry in your Ops manual will be clarified to state that you have to add 50' to all non precision approaches (i.e. MDA & DA) in order to not go below the minima. For precision approaches the DA will be treated as it currently is i.e. you initiate the GA at DA and pass slightly below it.
I apologise that it is all a bit confusing but I do not make the rules!