Our Relationship
- U.S. Mission Leaders
- U.S. Government Leaders
- U.S. Agencies and Aviation
  - In addition to the U.S. Department of State , many other U.S. government agencies work closely with international organizations in Montreal, and are represented here.
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About the Mission
- U.S. Mission
  - U.S. Mission to the International Civil Aviation Organization
  - Physical Address
    
    999 Robert-Bourassa Blvd.
    
    Montreal, (Quebec), Canada
    
    Note: No mail will be accepted at the physical address, please refer to the mailing address below.
    
    Mailing Address
    
    U.S. Mission to ICAO
    
    955, 1re Avenue #USA
    
    Sainte-Catherine, Quebec
    
    J5C 1C5
    
    Telephone: 514-954-5794
    
    Fax: 514-954-8021
    
    Email: usicao@state.gov
    
    Note: If your email is related to the official work of the U.S. Mission, we will reply as soon as possible during business hours. If your message is directed to Ambassador Sullenberger in his personal capacity, we regret that he is unable to respond due to the volume of messages he receives.
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U.S. Agencies and Aviation

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