Background

ACRP Legal Research Digest 21: Compilation of DOT and FAA Airport Legal Determinations and Opinion Letters is a compilation of Federal Aviation Administration (FAA) 14 C.F.R. Part 16 determinations and orders, FAA 14 C.F.R. Part 13 decisions, United States Department of Transportation (U.S. DOT) 49 U.S.C. § 47129 decisions, and legal opinion letters and related documents issued by the U.S. DOT General Counsel and FAA Chief Counsel as of 2017. FAA publishes Part 16 and Part 13 decisions online, but indexes them only by party name and docket number. ACRP LRD 21, which can be found at  https://crp.trb.org/acrplrd21/, indexes decisions by subject matter and is an extremely valuable research aid for airport operators, law firms, and consultants. This resource is updated annually.

OBJECTIVE

The objective of this research is to update the ACRP LRD 21 WebResource annually for four years through 2027.

STATUS: Work has been initiated. Draft abstracts are expected September 2025.