; and (2) the role the airport plays in emergency or disaster preparedness in the community served by the airport. . 569. Study regarding day-night average sound levels (a) Study The Administrator of the Federal Aviation Administration shall evaluate alternative metrics to the current average day night level standard, such as the use of actual noise sampling and other methods, to address community airplane noise concerns. (b) Report Not later than 180 days after the date of enactment of this Act, the Administrator shall submit to Congress a report on the results of the study, including a description of the proposed structure of a recommended pilot program. 570. Report on status of agreement between FAA and Little Rock Port Authority (a) Report requirement Not later than 30 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall submit to the Committee on Transportation and Infrastructure of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate a report on the agreement between the Federal Aviation Administration and the Little Rock Port Authority to relocate the Little Rock, Very High Frequency Omnidirectional Range with Collocated Tactical Air Control and Navigation (LIT VORTAC). (b) Report contents The report required under subsection (a) shall include the following: (1) The status of the efforts by the Federal Aviation Administration to relocate the LIT VORTAC. (2) The long-term and short-term budget projections for the relocation project. (3) A description of and timeline for each phase of the relocation project. (4) A description of and explanation for the required location radius. (5) A description of work completed by the Federal Aviation Administration as of the date of the report. 571. Study on allergic reactions Not later than 120 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall— (1) study the prevalence of allergic reactions on board flights,