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Technical Programs Branch

Part 205 Insurance and Part 298 Exemptions

The Technical Programs Branch is responsible for processing insurance endorsements (OST Forms 6410 and 6411) in accordance with of Title 14 Code of Federal Regulations (CFR) Part 205 — Aircraft Accident Liability Insurance certification and air taxi operator registration and amendments (OST Form 4507) in accordance with Part 298 —Exemptions for Air Taxi and Commuter Air Carrier Operations.

COMING SOON: eAIM Economic Authority and Insurance Management

A new online system for submitting and tracking:

  • OST Form 4507–Air Taxi Operator Registration and Amendments (including online payment of filing fees through
  • OST Form 6410–US Air Carriers Certificate of Insurance
  • OST Form 6411–Foreign Air Carriers Certificate of Insurance

Operators may continue to use expired OST forms until updated forms are published—

Reference InFO16013: Continued use of Expired Office of the Secretary of Transportation (OST) Forms Numbered 4507, 6410, and 6411 (PDF).

Part 298 Subpart B Exemptions for Air Taxi and Commuter Air Carrier Operations

  • OST Form 4507 (PDF): Air Taxi Operator Registration and Amendments. *** UPDATED 8-31-2019 ***

Part 205 Policies of Insurance for Aircraft Accident Bodily Injury and Property Damage Liability

Please refer to the Filing Instructions on each of the forms for the addressee. Initial registrations must be mailed along with the filing fee. For other than initial registrations, forms filed with the FAA, Air Transportation Division, may be completed electronically and sent via email to:

  •     **PREFERRED**


  • Fax to: (202) 267-5229
  • Mail to: Federal Aviation Administration
    Air Transportation Division, Room 831
    800 Independence Avenue, SW
    Washington, DC 20591

On Demand handbook: How to Become an On-Demand Air Carrier Operator

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