Annex 13

Annex 13 is the ICAO Annex on Aircraft Accident and Incident Investigation Already at the beginning of this Annex, ICAO clearly states that:

OBJECTIVE OF THE INVESTIGATION 3.1 The sole objective of the investigation of an accident or incident shall be the prevention of accidents and incidents. It is not the purpose of this activity to apportion blame or liability

Further in the document, it is stated that:

Non-disclosure of records