Locate an Office

The FAA aircraft local field offices listed below can provide you direct personal assistance to address your particular situation in a timely manner:

Aircraft Certification Offices (ACO) are staffed with FAA Aviation Safety Engineers (ASE) to assist with:
- Design approvals and certificate management
- U.S. production approvals
- Engineering and analysis questions
- Investigating and reporting aircraft accidents, incidents, and service difficulties
- Designated Engineering Representatives (DER) oversight
Flight Standards District Offices (FSDO) are staffed to assist with:
- Airmen certification (licensing), to include pilots, mechanics, I.A.s, repairmen, dispatchers, and parachute riggers
- Aircraft permits and other certification issues
- Air carrier certification and operations
- Accident investigations
- Enforcement and investigation issues
International Field Offices (IFO):
- Authorize operations to the United States by foreign air carriers
- Approve maintenance programs and MELs and authorize certain other operations for U.S. registered aircraft used by foreign air carriers
- Conduct surveillance of foreign air carriers operating into the United States
- Conduct certification and surveillance of U.S. Foreign Repair Stations
Manufacturing Inspection District Offices (MIDO) are staffed with FAA Aviation Safety Inspectors (ASI) to assist with:
- Manufacturing and production certification
- Airworthiness certification
- Manufacturing facilities approval holder issues
- Manufacturing Designated Airworthiness Representatives (DAR-F) oversight
Manufacturing Inspection Offices (MIO) provide:

Which Local Office Should I Contact?