The document discusses aerodrome safety management systems (SMS) and provides guidance on their implementation. It outlines the four components of an SMS framework according to ICAO: safety policy and objectives, safety risk management, safety assurance, and safety promotion. It also discusses hazard identification, safety performance monitoring, management of change, training, and the role and responsibilities of the accountable manager in leading the SMS. The goal of an SMS is to manage safety systematically and make continuous improvements to the overall safety level.