G27, I doubt you've read FCOM1 of airbus coz it clearly states:
ORGANIZATION OF THE MANUAL
FOREWORD
This manual complements the approved Flight Manual. Airbus has attempted to ensure that the data contained in this manual agrees with the data in the Flight Manual. If there is any disagreement, the Flight Manual is the final authority.
COMMENTS — QUESTIONS — SUGGESTIONS
All manual holders and users are encouraged to submit any Flight Crew Operating Manual questions and suggestions to :
CONTENT
The Flight Crew Operating Manual (FCOM), and the associated Quick Reference Handbook (QRH), are developed specifically for flight crews, in order to provide them with all of the necessary information about the operational, technical, procedural, and performance characteristics that are required for the safe and efficient aircraft operation. These manuals take into account all of the operational procedures to be applied during normal and abnormal/emergency situations that may occur on ground or in flight.