The Chicago Aircraft Certification Office (ACO) is a field office in the Small Airplane Directorate.  We manage applications for new aircraft within the geographical area and manage the continued airworthiness of those products.  The Chicago ACO also reviews design and installation data that is submitted by companies and individuals in the geographical area.

Federal Aviation Administration
Chicago ACO (ACE-115C)
2300 East Devon Avenue, Room 107
Des Plaines, IL 60018

Phone:  (847) 294-7357
Fax:  (847) 294-7834

Directions to Our Office

Geographic service area: North and South Dakota, Minnesota, Wisconsin, Illinois, Indiana, Michigan and Ohio.