Overview

This space is dedicated to the development and maintenance of the Digital NOTAM Specification and of the automatic NOTAM production guidelines.

An initial version 1.0 was published in 2011 and it is available on the www.aixm.aero web site. That version was used for trials and test implementations, in particular in the context of the SESAR project 13.2.2. Based on the feedback collected from these implementations, an updated version (2.0) is now in preparation, including both improvements to the previously scenarios and new encoding scenarios.

In Europe, version 2.0 is the reference Digital NOTAM specification for the "CP1 Regulation".

Scenarios overview (Digital NOTAM Specification 2.0)

These scenarios are currently used in the Eurocontrol iNM/eEAD development, which is planned to start full operations in May 2025. The feedback from the iNM implementation is used for adjusting and correcting the encoding rules and the NOTAM production algorithms, where necessary. By the nature its content, which includes data encoding rules and data processing algorithms, the Digital NOTAM Specification is not suitable for a "document review" process. Only a "validation by implementation" approach can ensure the maturity and the fit for purpose. This is currently happening through the iNM project. It is not expected that a formal document review process could change significantly the content of the Specification, as the iNM implementation ensures a de-facto validation of the content.