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5、7 Monitoring Aircraft Noise and Operations in the Vicinity of Airports: System Description, Acquisition, and Operation RATIONALEARP4721 Part 1 has been reaffirmed to comply with the SAE five-year review policy. SAE ARP4721/1 Page 2 of 50 SAE ARP4721/1 Page 3 of 50 SAE ARP4721/1 Page 4 of 50 SAE ARP4
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