H.Amdt.546 - An amendment numbered 1 printed in Part A of House Report 115-650 to improve aviation safety by addressing issues such as airline engines, air ambulances, certification processes, and airspace operations. Adjusts FAA authorization levels to conform with updated CBO baseline for FY 2018. Makes counter-UAS systems AIP eligible. Continues the contract weather observer program and requires the Secretary to define the roles and responsibilities of the FAA Tech Center. Reforms and provides transparency to FAA organization and programs. Addresses consumer concerns, including sexual misconduct on flights, treatment of passengers with disabilities, and harmonization of service animal standards. Improves the Airport Investment Partnership Program.