You can download the AIRM UML model and the AIRM Rulebook.
Sparx Systems Enterprise Architect file
The AIRM is maintained as a complex UML model using Sparx Systems Enterprise Architect.
An XMI 2.1 export of the AIRM UML model is also available.
The AIRM Rulebook provides principles, rules and recommendation in order to facilitate the development and maintenance of the AIRM.
The principles, rules and recommendations are intended to be used for modelling, consolidation, validation and verification, and quality check purposes.