Department of Transportation July 24, 2023 – Federal Register Recent Federal Regulation Documents

The FAA proposes to adopt a new airworthiness directive (AD) for all CFM International, S.A. (CFM) Model LEAP-1B21, LEAP-1B23, LEAP- 1B25, LEAP-1B27, LEAP-1B28, LEAP-1B28B1, LEAP-1B28B2, LEAP-1B28B2C, LEAP-1B28B3, LEAP-1B28BBJ1, and LEAP-1B28BBJ2 (LEAP-1B) engines. This proposed AD was prompted by a manufacturer investigation that revealed that certain high-pressure turbine (HPT) rotor stage 1 disks (HPT stage 1 disks) and a certain compressor rotor stages 6-10 spool were manufactured from material suspected to have reduced material properties due to iron inclusion. This proposed AD would require replacement of certain HPT stage 1 disks and a certain compressor rotor stages 6-10 spool. The FAA is proposing this AD to address the unsafe condition on these products.

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 757-200, -200CB, and -200PF series airplanes. This proposed AD was prompted by a crack growth analysis, which indicated that current inspections are not adequate to detect cracks in certain sections of the upper frame at the frame splice between certain stringers before a single frame fails. This proposed AD would require an inspection or records review for existing repairs; repetitive inspections for cracks of the upper frame at the frame splices between certain stringers in certain sections, and applicable on-condition actions. The FAA is proposing this AD to address the unsafe condition on these products.

This action amends Class E airspace extending upward from 700 feet above the surface for Cross City Airport, Cross City, FL, as a new instrument approach procedure has been designed for this airport. This action also updates this airport's geographic coordinates.

This action amends United States Area Navigation (RNAV) route T-270, in the vicinity of Shishmaref, AK. The RNAV route amendments are necessary due to the planned decommissioning of the Shishmaref, AK (SHH), Non-Directional Beacons (NDB) and the Norton Bay, AK (OAY), NDB. Both NDBs will be decommissioned as part of a large and comprehensive T-route modernization project for the state of Alaska.

This action establishes United States Area Navigation (RNAV) route T-376, in the vicinity of Iliamna, AK. This action is in support of a large and comprehensive RNAV T-route modernization project for the state of Alaska.

This action amends United States Area Navigation (RNAV) route T-228 in the vicinity of Cape Newenham, AK, in support of a large and comprehensive T-route modernization project for the state of Alaska.

On July 5, 2023, FRA published a 30-day notice of information collection; request for comment in the Federal Register. FR Doc. 2023- 08413. Due to technical issues as the result of which FRA did not receive two timely-filed comment letters until after the comment period closed, FRA is withdrawing the July 5, 2023, notice of information collection; request for comment and re-issuing the 30-day notice to address the two additional comments. Accordingly, this notice supersedes the July 5, 2023, notice.

The FAA is superseding Airworthiness Directive (AD) 2022-19-08 which applied to all Airbus Helicopters Model SA341G and SA342J helicopters. AD 2022-19-08 was prompted by a report of manufacturing defects on multiple tail rotor blades (TRBs) and required visually inspecting certain part-numbered TRBs for the presence of a linear indication, and, depending on the inspection results, fluorescent penetrant inspecting the TRB and further corrective actions if necessary. AD 2022-19-08 also prohibited installing an affected TRB unless certain requirements had been met. This AD was prompted by the determination that parts that have accumulated more than 500 flight hours (FH) since new are also affected by the unsafe condition. In addition, the defined compliance time for the visual inspection of the root area of each affected part was determined to be too strict. This AD retains certain requirements of AD 2022-19-08, includes all TRBs in the inspection requirements, and increases a compliance time as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA previously sent this AD as an emergency AD to all known U.S. owners and operators of these helicopters. The FAA is issuing this AD to address the unsafe condition on these products.