In the context of aviation and aerospace, an "Airport Capital Improvement Plan" (ACIP) refers to a comprehensive, long-term plan that outlines the development and improvement of an airport's infrastructure, facilities, and services. The plan typically covers a period of 5-10 years or more and is designed to ensure that the airport can meet the growing demands of air travel, while also improving safety, efficiency, and passenger experience.

An ACIP typically includes:

1. Infrastructure development: Upgrades to runways, taxiways, aprons, and other airfield infrastructure to support increased air traffic and larger aircraft.
2. Terminal and facility improvements: Expansions, renovations, or new construction of terminal buildings, concourses, and other facilities to enhance passenger experience and accommodate growing demand.
3. Safety and security enhancements: Upgrades to safety and security systems, such as airfield lighting, navigation aids, and surveillance systems.
4. Technology and system upgrades: Implementation of new technologies, such as air traffic control systems, baggage handling systems, and passenger processing systems.
5. Sustainability and environmental initiatives: Incorporation of sustainable practices and environmental mitigation measures to reduce the airport's environmental impact.
6. Land use and development: Planning for the use of airport land, including the development of new facilities, such as hotels, offices, and cargo facilities.

The ACIP is typically developed by the airport authority or management team, in consultation with stakeholders, including airlines, passengers, and local community representatives. The plan is often funded through a combination of sources, including airport revenues, grants, and bonds.

The goals of an ACIP may include:

1. Increasing airport capacity: To accommodate growing demand for air travel and reduce congestion.
2. Improving safety and security: To ensure the safety and security of passengers, staff, and aircraft.
3. Enhancing passenger experience: To provide a comfortable, convenient, and enjoyable travel experience.
4. Supporting economic development: To contribute to the local economy by attracting businesses, creating jobs, and stimulating growth.
5. Reducing environmental impact: To minimize the airport's environmental footprint and promote sustainability.

Overall, an Airport Capital Improvement Plan is a critical tool for ensuring that an airport can meet the evolving needs of air travel, while also contributing to the economic and social development of the surrounding community.