Airworthiness Directives (ADs) are legally enforceable regulations issued by the FAA in accordance with 14 CFR part 39 to correct an unsafe condition in a product. Part 39 defines a product as an aircraft, engine, propeller, or appliance.

While we endeavor to list the latest Airworthiness Directives below, in the event that we've missed something the most current ADs can be found on the faa.gov website.

Download SAFOs for the "classic" vintage aircraft listed below. You will need the free Adobe Acrobat Reader to view and print PDFs.

Download PDF Service Bulletins, Letters and Memoranda for the “classic” vintage aircraft supported by Univair. Select your model of aircraft below to open the index of all available documents. You will need the free Adobe Acrobat Reader to view and print PDFs.

Download SAIBs for the "classic" vintage aircraft listed below. You will need the free Adobe Acrobat Reader to view and print PDFs.

Supplemental Type Certificates can be found on the Federal Aviation Administration's website by clicking here.

Browse our library of technical information regarding supersedures, installation procedures, conversions kits, approval basis, and more. All information is in PDF format and can be downloaded for free. You will need the Adobe Reader to view and print.

Some of the information contained in this section has not been officially reviewed or approved by the FAA, and is offered for informational purposes only.

Download PDF Type Certificate Data Sheets for all aircraft supported by Univair.