In the context of aviation and aerospace, the "Airport Certification Manual" (ACM) is a document that outlines the policies, procedures, and standards for airport operations, safety, and security. It is a critical resource for airport management, operators, and regulatory authorities.

The ACM is typically developed by airport authorities, in conjunction with national aviation authorities, to ensure that airports comply with international and national regulations, standards, and recommended practices. The manual covers a wide range of topics, including:

1. Airport layout and infrastructure
2. Runway and taxiway operations
3. Aircraft handling and ground handling services
4. Safety management systems
5. Security procedures
6. Emergency response planning
7. Environmental management
8. Aircraft noise management
9. Air traffic control services
10. Compliance with regulations and standards (e.g., ICAO, FAA, EASA)

The purpose of the Airport Certification Manual is to:

1. Ensure compliance with regulatory requirements and industry standards
2. Promote safe and efficient airport operations
3. Provide a framework for airport management and staff to follow
4. Facilitate audit and inspection processes
5. Enhance airport reputation and credibility

The ACM is usually reviewed and updated regularly to reflect changes in regulations, technologies, and best practices. It is an essential tool for airport operators, regulatory authorities, and other stakeholders to ensure that airports operate safely, efficiently, and in compliance with international and national standards.