; and (2) allow a transport category aircraft to taxi without the use of the main engines of the aircraft. (b) Report Not later than 2 years after the date of enactment of this section, the Administrator shall submit to the appropriate committees of Congress a report detailing the results of the study conducted under subsection (a), together with recommendations for such legislation and administrative action as the Administrator determines appropriate. 640. Special rule for reclassification of certain unclassified airports (a) Request for reclassification (1) In general Not later than September 30, 2024, a privately owned reliever airport (as defined in section 47102 of title 49, United States Code) that is identified as unclassified in the National Plan of Integrated Airport Systems, 2023–2027 (as published under section 47103 of title 49, United States Code) may submit to the Secretary a request to reclassify the airport according to the criteria used to classify a public airport. (2) Required information In submitting a request under paragraph (1), the privately owned reliever airport shall include the following information: (A) A sworn statement and accompanying documentation that demonstrates how the airport would satisfy the requirements of FAA Order 5090.5, titled Formulation of the NPIAS and ACIP , (or any successor guidance) to be classified as Local or Basic if the airport was publicly owned. (B) A report that— (i) identifies the role of the airport to the aviation system