These Guidelines specify the minimum requirements and provide comprehensive guidance for the definition, implementation, optimisation and operation of Minimum Safe Altitude Warning (MSAW).
Part I - describes the MSAW concept of operations and specific requirements on MSAW
Part II - contains overall guidance for the complete lifecycle of MSAW
Part III - specifies a generic example of an MSAW implementation and provides detailed guidance for optimisation and testing of MSAW
Together with similar Guidelines for Short Term Conflict Alert (STCA), Approach Path Monitor (APM) and Area Proximity Warning (APW), these documents provide Level 3 documentation for evolutionary improvement of ground-based safety nets.