BRNAV 1 RNP 1 Certification
As I understood from documents form the JAA you need a:
AIRWORTHINESS COMPLIANCE STATEMENT
And for this you need to check:
The AFM may contain a statement confirming P-RNAV compliance
or - manufacturer Customer Service letter confirming aircraft type with delivered navigation system is compliant
Because there in no such statement in our documents, I have contacted Boeing asking for it. But they have not answerd yet.
But thaks you all for your help!!!