On August 19, 2014, the Federal Aviation Administration (“FAA”) published a proposed rule regarding “Implementation of Legislative Categorical Exclusion for Environmental Review of Performance Based Navigation Procedures,” 79 Fed.Reg. 49141 (“CATEX Rule”) to implement the Congressional mandate contained in the FAA Modernization and Reform Act of 2012, Pub.L. 112-95 (“FRMA”), § 213, directing FAA “to issue and file a categorical exclusion for any navigation performance or other performance based navigation (PBN) procedure that would result in measureable reductions in fuel consumption, carbon dioxide emissions, and noise on a per flight basis as compared to aircraft operations that follow existing instrument flight rule procedures in the same airspace.” 79 Fed.Reg. 41941.
FAA was motivated to request public review of the CATEX Rule by the exceptions in FMRA that limits the change in the environmental review requirements to: (1) PBN procedures (excluding conventional operational procedures and projects involving a mix of both), FMRA § 213(c)(2); and (2) those in which there are measurable reductions in fuel consumption, carbon dioxide emissions and noise on a per flight basis, Id., see also, 79 Fed.Reg. 49142, citing FMRA § 213(c)(1). In addition, FAA feels it necessary to further explore the consequent recommendations of the industry group appointed to develop a metric to capture the new requirement, the NextGen Advisory Committee (“NAC”), made up of 28 members from the “airlines, airports, manufacturers, aviation associations, consultants, and community interests.” Id.