AD/B737/137 Amdt 1 - LE Slat Actuator Rod End

Overview

The Civil Aviation Safety Regulations 1998, specifically Part 39, address various safety requirements to ensure the continued airworthiness of aircraft. This legislative instrument, enacted by the Commonwealth of Australia, is overseen by the Civil Aviation Safety Authority (CASA) and serves to mitigate risks associated with aircraft operations. The problem this Act aims to address includes the safety issues arising from the structural integrity of components such as the slat actuator rod ends in Boeing 737 series aircraft. The issuance of Airworthiness Directives under this regulation ensures that identified safety concerns are systematically addressed to prevent unsafe conditions that could compromise flight safety. The policy objective behind these directives is to mandate corrective actions that align with international safety standards, as demonstrated in the revocation and amendment of AD/B737/137 in response to new safety data from the Federal Aviation Administration (FAA).

Scope and Application

The Civil Aviation Safety Regulations 1998, specifically under Part 39, pertains to Airworthiness Directives (ADs) issued by the Civil Aviation Safety Authority (CASA) in the Commonwealth of Australia. The scope of this particular AD, AD/B737/137 Amendment 1, applies to Boeing 737 series aircraft, specifically model numbers 737-300, -400, and -500 within the line numbers 1001 through 3132. The directive addresses an issue identified by the Federal Aviation Administration (FAA) concerning fractured leading edge slat actuator rods, which can lead to compromised controllability of the aircraft due to uncontrolled slat deployment. The requirement outlined in this AD mandates compliance with the technical specifications of FAA AD 2003-03-05 Amendment 39-13029, incorporating Boeing Service Bulletins relevant to the issue. The directive came into effect on 17 April 2003, following notification in the Commonwealth of Australia Gazette on 26 March 2003, and extends its regulatory reach to ensure the safety and airworthiness of the specified aircraft within Australian jurisdiction.

Key Provisions

The Airworthiness Directive (AD) AD/B737/137 Amdt 1, issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1(1) of the Civil Aviation Regulations 1998, pertains specifically to the Boeing 737 Series Aeroplanes, more precisely models 737-300, -400, and -500 with line numbers ranging from 1001 to 3132. The directive mandates actions in response to the identified unsafe condition concerning the slat actuator rod ends. These actions must adhere to the technical requirements of the Federal Aviation Administration (FAA) AD 2003-03-05 Amdt39-13029, with reference to Boeing Service Bulletins 737-27A1211, its revisions 1 and 2, and 737-27A1243. The directive was necessitated by reports of fractured rods on leading edge slat actuators, which were traced to fatigue cracking. Such fractures could lead to uncontrolled slat deployment and reduced controllability of the aircraft. The compliance requirement necessitates that the specified actions be completed by 17 April 2003, as detailed in the requirement document, which has been amended to reflect this new compliance date. This AD imposes several obligations on the operators and owners of the specified Boeing 737 aircraft. Primarily, they must ensure that the actions outlined in the AD are carried out on their aircraft to address the identified safety issue. This involves inspecting the slat actuator rod ends and taking corrective actions as specified in the FAA AD 2003-03-05 Amdt39-13029, including any necessary replacement or repair of the rod ends. Operators and owners must also keep records of all actions taken to comply with the directive, as well as any inspections performed to verify compliance. Furthermore, they must ensure that all personnel involved in the inspection and repair processes are adequately trained and qualified to perform the required tasks. Failure to comply with this AD can result in significant consequences. While the regulations do not explicitly outline specific offences or penalties, non-compliance with ADs can lead to enforcement actions by CASA, which may include grounding the aircraft until the required actions are completed. Such enforcement measures are critical to maintaining the safety standards set forth by the Civil Aviation Safety Regulations 1998. Additionally, there could be broader legal repercussions, including potential liability for accidents or incidents that arise from non-compliance with airworthiness directives. Therefore, it is imperative for operators and owners to adhere strictly to the requirements set out in this AD to avoid any legal or safety-related issues.