Occurrences that endanger flight safety shall be reported to MAA-NOR at
occurrence.maa-nor <at> mil.no (substitute " <at> " with @)
within 72 hours. 

Procedures for reporting of occurrences is to be specified in the quality system / exposition of the regulated organisations.

Guidance on how to report, how to describe reporting routines in quality systems and which occurrences should be reported, is found in the guidance document below. The form to be used when reporting (MAA-NOR Form 44) is also found below.