What document defines jurisdictional boundaries of each sector?

The document that defines jurisdictional boundaries of each sector is commonly known as the Letter of Agreement (LOA). An LOA is a formal agreement between air traffic control entities which outlines the responsibilities and boundaries of operations, ensuring smooth cooperation and coordination between different sectors or facilities. It specifies the geographical limits within which a sector has authority, along with procedures for coordination and transfer of aircraft between sectors. This is essential for air traffic management to operate safely and efficiently within defined airspace boundaries. It allows for clear communication and understanding of roles among air traffic controllers, facilitating effective airspace management.

While an Operational Process Guide, Standard Operating Procedure (SOP), and Air Traffic Control Procedures help establish various operational standards and protocols within an organization, they do not specifically delineate the boundaries of jurisdictional authority like an LOA does.