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Aircraft Certification Office (ACO)

Aircraft Certification Office (ACO) is the field branch of the FAA Aircraft Certification Service. The project ACO has geographic responsibility for finding the design complies with applicable airworthiness standards. It administers and secures compliance with agency regulations, programs, standards, and procedures governing the design approval of replacement and modification parts.

The main responsibilities of the FAA Aircraft Certification Offices are:

  • Design approval and certificate management
  • US production approvals
  • Engineering and analysis questions
  • Investigating and reporting aircraft accidents, incidents, and service difficulties
  • Designated Engineering Representatives (DER) oversight

 Currently there are 10 FAA Aircraft Certification Offices (ACOs) :

ACO Address & Contact Info Geographic Area of Service
Anchorage ACO
222 West 7th Avenue, #14
Anchorage, AK 99513-7587
PH: (907) 271-2668
FAX: (907) 271-6365
Alaska
ACO Address & Contact Info Geographic Area of Service
Atlanta ACO
One Crown Center
1895 Phoenix Blvd, Suite 225
Atlanta, GA 30349
PH: (770) 703-6035
FAX: (770) 703-6097
Alabama
Florida
Georgia
Kentucky
Mississippi
North Carolina
South Carolina
Tennessee
ACO Address & Contact Info Geographic Area of Service
Boston ACO
12 New England Executive Park
Burlington, MA 01803
PH: (781) 238-7151
FAX: (781) 238-7170
Connecticut
Maine
Massachusetts
New Hampshire
Rhode Island
Vermont
ACO Address & Contact Info Geographic Area of Service
Chicago ACO
2300 East Devon Avenue, Room 107
Des Plaines, IL 60018
PH: (847) 294-7358
FAX: (847) 294-7834
Illinois
Indiana
Michigan
Minnesota
North Dakota
Ohio
South Dakota
Wisconsin
ACO Address & Contact Info Geographic Area of Service
Denver ACO
Technical Operations Center (TOC)
26805 East 68th Avenue, Room 214
Denver, CO 80249
PH: (303) 342-1080
FAX: (303) 342-1088
Colorado
Montana (eastern portions)
Utah
Wyoming
ACO Address & Contact Info Geographic Area of Service
Fort Worth ACO
2601 Meacham Boulevard
Fort Worth, TX 76193-0100
PH: (817) 222-5100
FAX: (817) 222-5959
Arkansas
Louisiana
New Mexico
Oklahoma
Texas
ACO Address & Contact Info Geographic Area of Service
Los Angeles ACO
3960 Paramount Boulevard
Lakewood, CA 90712-4137
PH: (562) 627-5200
FAX: (562) 627-5210
Arizona
California
Hawaii
Nevada
ACO Address & Contact Info Geographic Area of Service
New York ACO
1600 Stewart Avenue, Suite 410
Westbury, NY 11590
PH: (516) 228-7300
FAX: (516) 794-5531
Delaware
District of Columbia
Maryland
New Jersey
New York
Pennsylvania
Virginia
West Virginia
ACO Address & Contact Info Geographic Area of Service
Seattle ACO
1601 Lind Avenue, SW
Renton, WA 98055-4056
PH: (425) 917-6400
FAX: (425) 917-6590
Idaho
Montana (western portions)
Oregon
Washington
ACO Address & Contact Info Geographic Area of Service
Wichita ACO
1801 Airport Road, Room 100
Mid-Continent Airport
Wichita, KS 67209
PH: (316) 946-4100
FAX: (316) 946-4107
Iowa
Kansas
Missouri
Nebraska
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