Compilation of DOT and FAA Airport Legal Determinations and Opinion Letters Through December 31, 2007

TRB’s Airport Cooperative Research Program (ACRP) Legal Research Digest 4 was a compilation of U.S. Department of Transportation (DOT) and U.S. Federal Aviation Administration (FAA) airport legal determinations and opinion letters through December 31, 2007.  

In September 2013, TRB released and ACRP Legal Research Digest 21: Compilation of DOT and FAA Airport Legal Determinations and Opinion Letters Through December 2012, which updated and superseded ACRP Legal Research Digest 4.

In March 2012, TRB released ACRP Legal Research Digest 13: An Index and Digest of Decisions: Compilation of Airport Law Resources, which complements ACRP LRD 12.