Airplane Seat Buckle Safety Inspection Rules
Summary
The FAA is adopting a new airworthiness directive (AD) for all airplanes with certain Pacific Scientific Company rotary buckle assemblies (buckles) installed. This AD was prompted by a report of a manufacturing defect in the screws used inside the buckle. This AD requires inspecting the buckle screws, and depending on the results, reidentifying the buckle, replacing the screws and reidentifying the buckle, or replacing the buckle. This AD also allows optionally prohibiting use of the seat until the actions required by this AD are accomplished. This AD also prohibits installing certain buckles on any airplane. The FAA is issuing this AD to address the unsafe condition on these products.
Compliance Requirements
- #1
Inspect each buckle screw for cracked, loose, and missing screw heads by following the Accomplishment Instructions, paragraphs B.(1) and (2), of Parker Meggitt Service Bulletin SB 1111475-25-001-2023, Revision 002, dated April 1, 2024 (SB 1111475-25-001-2023 Rev 002).; If any screw has a cracked, loose, or missing screw head, before further flight, replace the buckle with an airworthy buckle.; If none of the four screw heads are cracked, loose, or missing, before further flight, inspect each screw to determine if any screw has a Torx head by using one of the following methods in the Accomplishment Instructions of SB 1111475-25-001-2023 Rev 002: paragraph B.(4)(a) (Magnet Test); paragraph B.(4)(b) (Inspection); or paragraphs C.(2) through (4) (removing the buckle from the restraint system) and paragraphs D.(1)(a) through (d) (disassembling the buckle).; If none of the four screws have a Torx head, before further flight, reassemble the buckle (if necessary) by following the Accomplishment Instructions, paragraphs D.(1)(f) through (l), of SB 1111475-25-001-2023 Rev 002, and reidentify the buckle with 'INS. A' by following the Accomplishment Instructions, paragraph B.(6), of SB 1111475-25-001-2023 Rev 002.; If at least one of the four screws has a Torx head, before further flight, with the buckle removed, replace each Torx head screw with a hex head screw, reassemble the buckle, and reidentify the buckle with 'MOD. A' by following the Accomplishment Instructions, paragraphs D.(1)(e) through (m), of SB 1111475-25-001-2023 Rev 002, except you are not required to return any parts to Parker Meggitt. If a screw head breaks off during disassembly, before further flight, replace the buckle with an airworthy buckle.; Do not install a buckle identified in paragraph (c) of this AD on any airplane unless the buckle is marked with 'MOD. A' or 'INS. A.'
Deadline: 12 months after the effective date of this AD
Market Impacts
The AD imposes restrictions on the use of certain Pacific Scientific Company rotary buckle assemblies due to a manufacturing defect in the screws used inside the buckle. This affects all airplanes with these buckles installed, requiring inspections and possible replacements or modifications.; The AD creates opportunities for manufacturers and suppliers of compliant buckles and screws, as operators will need to source these parts to comply with the AD.; The AD may act as a barrier to entry for operators unable to quickly comply due to parts availability or financial constraints, potentially grounding airplanes until compliance is achieved.
Validated Company Impacts
AAR CORP
AAR CORP operates as a leading independent provider of aviation aftermarket solutions, including parts supply and repair services specifically for commercial and government aerospace customers. The company's Parts Supply segment distributes OEM replacement parts and its Repair & Engineering segment performs maintenance services, directly aligning with the AD's requirements for inspecting, replacing, and modifying Pacific Scientific buckle assemblies on affected aircraft. The AD rule addresses aircraft safety compliance risks related to specific buckle assemblies, but the company's disclosed risk factors focus primarily on financial, operational, and contractual compliance issues without mentioning aircraft maintenance, parts quality, or FAA regulatory risks. The only potential indirect connection is through 'USM parts refurbishment dependency,' but this lacks specificity to aircraft components or safety regulations.
BOEING CO
Boeing's Commercial Airplanes segment directly manufactures and sells aircraft that would be subject to this airworthiness directive, as the rule targets all airplanes with specific Pacific Scientific buckle assemblies installed. As a major aircraft manufacturer, Boeing would be responsible for ensuring compliance with AD requirements on both new production aircraft and potentially through service bulletins for existing fleets. The FAA airworthiness directive addresses specific aircraft safety compliance risks related to defective buckle assemblies, which does not align with any of the company's disclosed risk factors focused on financial, pension, and supplier dependence issues. The company's single regulatory compliance risk (ERISA funding) relates to pension obligations, not aviation safety requirements.
TEXTRON INC
Textron Aviation segment manufactures aircraft and provides aftermarket parts and services, directly aligning with the AD's requirements for inspecting and modifying Pacific Scientific Company rotary buckle assemblies installed on airplanes. The company's involvement in aircraft production and maintenance means it would be significantly affected by compliance requirements and potential parts replacement needs. The FAA airworthiness directive addresses mechanical safety risks related to aircraft seat buckle assemblies, while the company's sole identified risk category is cybersecurity threats involving data protection and operational technology disruption. There is no overlap between the mechanical aviation safety requirements of this rule and the company's cybersecurity risk profile.