Air traffic control communication at Portland International Airport

The transcript was made from a recording taped from radio at a site approximately two NM from the airport on July 1, 1990, between 10:45 and 11:15 AM . A copy of this recording on cassette may be obtained by writing to the Department of Computer Science and Engineering of the Oregon Graduate Institute. The recording exhibits high-frequency cutoff and high noise levels, however, so it may not be suitable for direct use with speech recognizers.