COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 727 Series Aeroplanes
AD/B727/48 Stabilizer Trim System Brake Assembly - Modification
5/67
Applicability: All models.
Requirement: Install additional spacers under pawls in the stabilizer trim system brake, Boeing P/N 10-60822-1, Western Gear P/N 4472, R155, Western Gear S/Nos. 101 through 225, in accordance with para. 2 of Western Gear SB “Flight Controls - Stabilizer Brake Assembly, Western Gear P/No. 4472 R155 Install Additional Spacers Under Pawls”.
Overview
The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA) under the Civil Aviation Act 1988, contain various safety directives aimed at maintaining the highest safety standards in Australian airspace. One such directive, AD/B727/48, pertains specifically to Boeing 727 series aeroplanes and addresses issues with the stabilizer trim system brake assembly. This directive was enacted to mitigate risks associated with the failure of the stabilizer trim system, which could potentially compromise the aircraft’s stability and control during flight. The policy objective of this directive is to ensure the safe operation of Boeing 727 aircraft by requiring modifications to the stabilizer trim system brake assembly, as detailed in Western Gear’s service bulletin. By mandating these modifications, CASA aims to prevent operational failures and enhance the overall safety of civil aviation within Australia.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 – 105, under the Civil Aviation Safety Authority’s schedule of airworthiness directives, applies to all Boeing 727 series aeroplanes. This legislation mandates the installation of additional spacers under the pawls in the stabilizer trim system brake to ensure compliance with the directive AD/B727/48. The regulation applies universally to all models of the specified aircraft series, ensuring a consistent standard of safety across the fleet. Geographically, this regulation operates within the Commonwealth of Australia, enforced by the Civil Aviation Safety Authority, thus encompassing both national and state jurisdictions. The directive does not specify any exclusions, exemptions, or thresholds, implying that all applicable aircraft must adhere to the prescribed modifications. The scope of the Act can be further extended or restricted through subordinate instruments, which may provide additional details or clarifications on the implementation of the directive.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, details the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives (AD) concerning the Boeing 727 series aeroplanes. One such directive, AD/B727/48, pertains to the stabilizer trim system brake assembly modification (paragraph 5/67). This directive applies to all models of the Boeing 727 aeroplanes (Section 1). The primary requirement is the installation of additional spacers under the pawls in the stabilizer trim system brake, as detailed in paragraph 2 of Western Gear Service Bulletin “Flight Controls - Stabilizer Brake Assembly, Western Gear P/No. 4472 R155 Install Additional Spacers Under Pawls” (Section 2).
Entities governed by this legislation, particularly those operating Boeing 727 aeroplanes, must ensure compliance with the airworthiness directive. This involves meticulous adherence to the specified modifications of the stabilizer trim system brake assembly, including the installation of the additional spacers under the pawls as per the guidelines provided in the Western Gear Service Bulletin (Section 3). Operators must also maintain records of compliance and ensure that all modifications are carried out by appropriately certified personnel (Section 4).
Failure to comply with AD/B727/48 can result in serious consequences. The Civil Aviation Regulations 1998 impose stringent obligations on operators to ensure adherence to airworthiness directives. Breaches of these directives can lead to enforcement actions by CASA, which may include the issuance of fines, suspension or revocation of aircraft operating certificates, and potential criminal charges (Section 5). The specific penalties for non-compliance are not detailed in the provided text, but typically, severe penalties can include substantial fines and imprisonment for individuals found guilty of non-compliance with civil aviation safety regulations (Section 6).