Federal Aviation Administration July 3, 2024 – Federal Register Recent Federal Regulation Documents

The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SP, and 747SR series airplanes. This proposed AD was prompted by a report indicating cracks at eight fastener hole locations in the fuselage skin lap splice between certain stations (STAs) at certain stringers. This proposed AD would require repetitive inspections of the upper fastener row of the fuselage skin lap splice in a certain area for any crack, and applicable on-condition actions. 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 all Airbus SAS Model A350-941 and -1041 airplanes. This proposed AD was prompted by reports that engine nacelle anti-icing (NAI) forward bulkheads have been found with elongated locating holes. This proposed AD would require a one-time detailed inspection of the engine NAI forward bulkhead locating holes for elongation and loose fasteners and applicable corrective actions, and would also prohibit the installation of affected parts under certain conditions, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

The FAA proposes to supersede Airworthiness Directive (AD) 2021-25-14, which applies to all Airbus SAS Model A319-111, -112, -113, -114, -115, -131, -132, and -133 airplanes; Model A320-211, -212, -214, -216, -231, -232, and -233 airplanes; and Model A321-111, -112, -131, - 211, -212, -213, -231, and -232 airplanes. AD 2021-25-14 requires repetitive inspections for cracking at the wing manhole access panel attachment holes at certain wing skin panels, and corrective action if necessary. Since the FAA issued AD 2021-25-14, new investigation results identified that the applicability of these inspections must be expanded to all airplanes in an affected configuration, and the associated compliance time must be adapted to these respective configurations. In addition, further investigation results found that the post-repair inspection program tasks in accordance with the Structural Repair Manual for the affected area were inadequate. This proposed AD would continue to require the actions in AD 2021-25-14 and would require expanding the applicability to include New Engine Option (NEO) airplanes and accomplishment of the required actions within updated compliance times, as applicable to airplane configuration, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.