This part applies to the airport noise compatibility planning activities of the operators of ``public use airports,'' including heliports, as that term is used in section 47501(2) as amended (49 U.S.C. 47501 et seq.) and as defined in section 47102(17) of 49 U.S.C. [Doc. No. FAA-2004-19158, 69 FR 57625, Sept. 24, 2004]