AOV Credentialing and Control Tower Operator Certificate Programs

The Credentialing Program implements the Administrator's direction for independent oversight of the ATO's personnel certification program, and it ensures that those performing direct safety-related air traffic control services and/or certify systems/subsystems/services maintain required skills. ATO must maintain the NAS at a safety level that is at least equal to the baseline, in compliance with current policies, processes, and procedures that are documented in orders, handbooks, and manuals.

  • The International Civil Aviation Organization (ICAO) established International Standards for the licensing of aviation personnel including air traffic controllers in Annex 1 — Personnel Licensing from the Convention on International Civil Aviation.
  • FAA Order 1100.161 Air Traffic Safety Oversight, directed AOV to develop and maintain a Credentialing Program in accordance with ICAO Annex 1 to ensure that operational personnel have the required knowledge, skills, and abilities to perform their assigned functions.
  • FAA Order 8000.90C Air Traffic Safety Oversight Credentialing and Control Tower Operator Certification Programs, sets forth how to issue and maintain credentials for ATO personnel.

General Information

AOV Credentials

Control Tower Operation (CTO) Certificate

Air Traffic Safety Oversight Service Information and Assistance

About AOV
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Contact Us

General duty hours are Monday — Friday, 6 a.m. to 4 p.m.

Eastern Area Operations

Air Traffic Safety Oversight Service
1701 Columbia Ave
Highwoods Building College Park, GA 30337
Telephone: (609) 485-9574

Central Area Operations

Air Traffic Safety Oversight Service
10101 Hillwood Pkwy
Irving, TX 76177
Telephone: (817) 222-5467
Tech Ops: (817) 222-5441

Western Area Operations

Air Traffic Safety Oversight Service
2200 S. 216th Street
Des Moines, WA 98198
Telephone: (206) 231-3718


Federal Aviation Administration
Air Traffic Safety Oversight Service
Room 1026, Attn: Credentialing — CTO Program Staff
800 Independence Ave. SW
Washington, DC 20591
Telephone: (202) 267-5205

Last updated: Wednesday, January 10, 2024