Title from PDF file caption (viewed Dec. 30, 2008).
Mode of access: Internet at the FAA web site. Address as of 12/30/08: http://www.airweb.faa.gov/Regulatory%5Fand%5FGuidance%5FLibrary/rgAdvisoryCircular.nsf/0/c9461c4231acdc7d86256f1c006f8fce/$FILE/ac60-25f.pdf; current access available via PURL.