AD/BAe 146/29 - Seat Rail Bolts

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, address various safety concerns related to civil aviation, including the implementation of airworthiness directives for specific aircraft types. Part 39 - 105 of the Civil Aviation Regulations 1998, specifically AD/BAe 146/29, pertains to British Aerospace BAe 146 Series Aeroplanes and was introduced to address a safety concern regarding the bolts securing the outer seat rails at frame 28 on certain models of the BAe 146 series 300. The policy objective is to ensure that these aircraft continue to meet crashworthiness requirements, particularly if higher density cabin layouts are fitted in the future. This is achieved by mandating the replacement of specific bolts to maintain compliance with relevant safety standards. The directive requires that the seat rail bolts of specified BAe 146 series 300 models with certain constructors' numbers be replaced according to the Mandatory BAe 146 Service Bulletin 53-102. This action is intended to ensure continued adherence to Joint Aviation Authorities (JAR) and Federal Aviation Administration (FAR) crashworthiness requirements, thereby enhancing the overall safety of these aircraft in operation.

Scope and Application

The Civil Aviation Regulations 1998, as amended, establish a comprehensive framework for ensuring the safety of civil aviation in Australia. Specifically, Part 39, Section 105, pertaining to the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, mandates stringent safety measures for specific aircraft models, including the British Aerospace BAe 146 Series Aeroplanes. This particular regulation, identified as AD/BAe 146/29, applies exclusively to the BAe 146 series 300 aircraft with specific constructor numbers: E3134, E3135, E3137, E3141, E3142, E3143, E3145, E3147, E3149, E3150, and E3151. The directive requires compliance with Mandatory BAe 146 Service Bulletin 53-102, which stipulates that the bolts securing the outer seat rails at frame 28 must be upgraded from 1/4 inch to 5/16 inch diameter to meet future higher density cabin layout requirements and ensure continued compliance with Joint Aviation Authorities (JAR) and Federal Aviation Administration (FAR) crashworthiness standards. This regulation underscores the Commonwealth's commitment to maintaining the highest safety standards within its jurisdiction, impacting both domestic and international operations involving the specified aircraft models.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, details the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, with a focus on the British Aerospace BAe 146 Series Aeroplanes (Section 39-105). A particular directive of note is AD/BAe 146/29, which pertains to the seat rail bolts. This directive applies to BAe 146 series 300 models with specific constructor numbers, including E3134, E3135, E3137, E3141, E3142, E3143, E3145, E3147, E3149, E3150, and E3151 (Section 39-105). The requirement outlined in this directive is for actions in accordance with the Mandatory BAe 146 Service Bulletin 53-102 (Section 39-105). Compliance with this directive is to be achieved as specified in the associated Requirement Document (Section 39-105). This Airworthiness Directive imposes several obligations on the entities it governs. Primarily, it mandates that the bolts securing the outer seat rails at frame 28 must be changed from 1/4 inch to 5/16 inch in diameter (Section 39-105). This change is necessary to ensure compliance with Joint Aviation Authorities (JAR) and Federal Aviation Administration (FAR) crashworthiness requirements, especially if a higher density cabin layout is fitted in the future (Section 39-105). The directive is clear that compliance must align with the specifications detailed in the Requirement Document, which likely provides further technical and procedural guidance for the bolt replacement process (Section 39-105). Failure to comply with AD/BAe 146/29 could lead to significant consequences. The Civil Aviation Regulations 1998 do not explicitly detail the penalties or consequences for non-compliance in this specific directive, but generally, non-compliance with CASA directives can result in severe civil or criminal penalties (Section 39-105). Such penalties may include fines, suspension or revocation of airworthiness certificates, and potential criminal charges for operators or persons responsible for ensuring compliance (Section 39-105). The exact penalties would depend on the severity and impact of the non-compliance, as interpreted under the broader provisions of the Civil Aviation Act 1988 and related regulations (Section 39-105).