Definition
A Customer Service Office (CSO) is an FAA contact point that provides aeronautical information, services, and assistance to pilots and other airspace users, particularly in support of flight planning and Notices to Air Missions (NOTAM) needs.
Plain English
A CSO is an FAA office where pilots can get help with flight information and services.
Context Anchor
Seen in FAA acronym lists, NOTAM-related material, and aviation service or facility contact information.
Why Pilots Care
Pilots use the CSO to resolve issues with certificates, get information, or report concerns, ensuring smooth interactions with regulatory bodies.
Intuition Check
Do not read CSO as a cockpit system or flight instruction in this context. Here it simply means the customer service office.
Example Sentence 1
The pilot called the CSO to clarify a NOTAM that wasn't displaying correctly in the briefing system.
Example Sentence 2
During the preflight planning, she located the nearest CSO for additional resources.