Federal Aviation Regulations Explained : Parts 1, 61, 91, 141, and NTSB 830 by Kent S. Jackson, Joseph T. Brennan, Jeppesen Sanderson, (1997) -- This is a great place to start. Each regulation is explained by the authors and then followed by related NTSB decisions, Appeals Court decisions, and FAA Chief Counsel opinions.
General Aviation Law, 2nd Edition by Jerry A. Eichenberger, McGraw-Hill (1997) -- Helpful as an overview of topics relevant to GA pilots, especially the FAA enforcement process. But provides very little content on legal documents or research methods.
Aviation Supplies and Academics (ASA)
Aviation Accident Law by Lee S. Kreindler, revised 1971, New York: M. Bender -- 2 volume treatise, divided into four parts, further divided into chapters with "Synopsis" (i.e. table of contents divided by hierarchical subject headings) at the beginning of each chapter, limited due to age of references
Primary Source Pamphlet -- seperate paper-bound supplement to Kreindler above, includes international and regional overviews
Aviation Law: Cases and Materials, 2nd. Edition by Andreas P. Lowenfeld, NY: M. Bender, 1981 -- looseleaf-fomat case book that covers quite specific aviation issues (e.g. noise abatement, air mail), includes topical index, table of cases and comparative law material
Documents Supplement, 1981 -- seperate paper-bound companion to Lowenfeld, including Sherman and Clayton Anti-Trust Acts, Administrative Procedure Act of 1966, U.S. Constitution, Federal Aviation Act of 1958, as well as some major international aviation documents
CCH's Aviation Law Reporter, Chicago, 1947- -- looseleaf-format reporter of statutes, regulations, DOT and NTSB (and old CAB) decisions on aviation, includes decisions pertaining to international operations, includes table of cases
CCH's Aviation Cases NY, 1945- -- relevant portion of Title 49 + full text of state and federal cases concerning aviation (bound version of Aviation Law Reports), includes headnotes and captions, general (alphabetical by party names) case table, jurisdictional case table, and topical index
CCH's Aviation Law Reports -- looseleaf-format, relevant portions of Title 49 + full text of state and federal cases concerning aviation
The Law of Aviation, 4th Edition by Rowland W. Fixel, Charlottesville, VA: Michie, 1967 -- treatise covering history of aviation law, state overviews, comparative, tort, administrative procedures, as well as other topics, includes table of cases
Litigating the Aviation Case: from pretrial to closing argument, Juanita M. Madole, ed., Chicago: ABA, 1987 -- compilation of essays on the aviation legla process, prepared for the 6th National Institute on Litigation in Aviation, includes bibliographies, useful for lawyers or pilots in understanding how to successfully approach an aviation case
Michigan Aviation, Lansing: Dept of Aeronautics -- good example of a newsletter that helps keep pilots up-to-date on state policies
United States Aviation Reports, NY: Oceana Publications -- federal statutes with full legislative histories, fed and state cases
U.S. Aviation Reports Digest -- seperate set of cumulative volumes that accompany the US Av. Reports, includes broad subject index, moves eventually to new series (e.g. 1961-80 = 4th series)
Aviation Law Forum -- mediated by aviation attorney, Phillip J. Kolczynski. Broken down by the following topics: accident law, aircrash liability, aircraft product liability, military aviation, technical witnesses, FAA licensing and certification, aviation trials, and general issues.
FAA-OAI Library -- lists all files available from the FAA-OAI Library on the FedWorld Information Network, updated daily.
Aviation Home Page -- good as a general reference for keeping up on aviation happenings
Aviation Law Corporation Newsletter -- briefly discusses some important aviation law issues. Best read as a general overview or introduction to aviation law, not as a place to find answers to specific questions. I would recommend turning off images on your browser before visiting this site, since the cloud background image is a bit annoying.
Southern Aviator Onlline -- a good source for keeping up to date on regs.