AD/SEATS/7 Amdt 1 - Flight Equipment and Engineering Seats Model 121

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority, were enacted to establish and maintain high safety standards in Australia's civil aviation sector. Part 39, specifically addressing airworthiness directives, was introduced to ensure the ongoing safety and reliability of aircraft components. One such directive, AD/SEATS/7 Amendment 1, pertains to specific Model 121 seats installed in SAAB 340 aircraft. This directive was introduced to address the issue of cracking in the backrest and tray stop spindle bosses of these seats, which compromises their structural integrity and poses safety risks. The amendment mandates actions in accordance with the Flight Equipment and Engineering Service Bulletin 25-20-1294 Revision 1, ensuring that these safety concerns are effectively managed and mitigated. This legislative instrument aims to align with international safety standards, referencing the UK Civil Aviation Authority’s AD 017-03-93. The policy objective is to ensure that all affected aircraft seats comply with the stipulated safety measures before the compliance date of 22 December 1993, with the amendment taking effect from 22 July 1993. The directive mandates terminating action for the repetitive inspections outlined in the original issue, thereby reinforcing the commitment to maintaining high safety standards within the Australian civil aviation industry.

Scope and Application

The Civil Aviation Safety Authority Schedule of Airworthiness Directives, specifically AD/SEATS/7 Amendment 1, applies to Model 121 seats with the part numbers listed in the Requirement Document, which are typically installed in SAAB 340 aircraft. This legislation pertains to the inspection and potential repair of seats identified to have structural integrity issues due to cracking of the backrest and tray stop spindle bosses, necessitating compliance with the Flight Equipment and Engineering Service Bulletin 25-20-1294 Revision 1. The directive applies nationally across the Commonwealth of Australia, overseen by the Civil Aviation Safety Authority (CASA), and requires adherence by all relevant entities including airlines, maintenance providers, and aircraft operators. Notably, this amendment supersedes the initial issue, mandating that the required actions be completed prior to the compliance date of 22 December 1993, although the initial directive was set for 30 June 1993, with the amendment itself taking effect from 22 July 1993.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 107, outline the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, with AD/SEATS/7 Amendment 1 being pertinent to the Flight Equipment and Engineering Seats Model 121 (section 107). This directive applies to Model 121 seats with specific part numbers as detailed in the Requirement Document (section 1). The primary requirement is for operators to implement the actions specified in Flight Equipment and Engineering Service Bulletin 25-20-1294 Revision 1 (section 2). This bulletin references UK Civil Aviation Authority AD 017-03-93 for further guidance (section 3). Compliance with this directive was mandated before 22 December 1993, with the initial issue having a compliance date of 30 June 1993 and this amendment becoming effective on 22 July 1993 (section 4). Operators of the affected seats must ensure they follow the detailed procedures and inspections outlined in the Service Bulletin to address identified issues, particularly the cracking of the backrest and tray stop spindle bosses in the aisle section of the seats (section 5). The structural integrity of the seat is compromised due to this cracking, and these seats are typically installed on SAAB 340 aircraft (section 6). The directive’s purpose is to ensure the safety of passengers and crew by mitigating the risks associated with these structural defects (section 7). Failure to comply with AD/SEATS/7 Amendment 1 may result in severe consequences. The Civil Aviation Safety Authority has the authority to enforce compliance, and non-compliance could lead to penalties, which may include substantial fines, grounding of the aircraft, or other regulatory actions (section 8). The maximum penalties for such breaches are not explicitly stated in the provided text but typically align with the broader regulations governing civil aviation safety (section 9). The overarching goal is to maintain the highest safety standards within the aviation industry, and thus adherence to these directives is mandatory (section 10).