Action
Interim final rule; request for comments.
Summary
This final rule requires airplanes operated under title 14, Code of Federal Regulations (14 CFR) part 121, U.S.-registered multiengine airplanes operated under 14 CFR part 129, and multiengine airplanes used in scheduled operations under 14 CFR part 135 to undergo inspections and records reviews by the Administrator or a designated representative after their 14th year in service and at specified intervals thereafter. These inspections and records reviews will ensure that the maintenance of these airplanes' age-sensitive parts and components has been adequate and timely. The final rule also prohibits operation of these airplanes after specified deadlines unless damage-tolerance-based inspections and procedures are included in their maintenance or inspection programs. Operators of airplanes initially certificated with nine or fewer passenger seats, however, may incorporate service-history-based inspections instead of damage-tolerance-based inspections and procedures in those airplanes' maintenance or inspection programs. This final rule does not apply to airplanes operated between any point within the State of Alaska and any other point within the State of Alaska. This rule represents a critical step toward compliance with the Aging Aircraft Safety Act of 1991 and helps to ensure the continuing airworthiness of aging airplanes operating in scheduled service.