Overview

The Civil Aviation Regulations 1998 (CAR 1998) were enacted by the Commonwealth of Australia to ensure the safety and efficiency of civil aviation. This legislation provides a comprehensive framework governing the operation of civil aircraft and the certification of aeronautical products, personnel, and organisations within Australia. The CAR 1998 addresses various gaps in aviation safety and regulation, aiming to harmonise Australian aviation standards with international norms and to protect public safety and property from the risks associated with civil aviation. This legislative instrument, issued by the Civil Aviation Safety Authority (CASA), represents an effort to implement specific safety measures in response to identified hazards. In this instance, the Airworthiness Directive (AD) for Boeing 737 Series Aeroplanes was introduced to address a reported issue of structural integrity in the keel beam structure of certain aircraft models, ensuring compliance with safety standards to prevent potential failures. The policy objective is to maintain the highest level of safety in civil aviation by mandating corrective actions based on technical assessments and historical incident data.

Scope and Application

This Airworthiness Directive (AD) issued under the Civil Aviation Regulations 1998 applies specifically to Boeing 737 Series Aeroplanes, namely the 737-600, -700, and -800 series aircraft within the specified line numbers. The directive mandates corrective action concerning the keel beam structure of these aircraft, following a reported issue of severed rear spar stiffeners in the centre wing that led to cracking in the keel beam. This action is required to prevent potential failure of the keel beam structure, ensuring the continued airworthiness and safety of these aircraft. The directive is issued by a delegate of the Civil Aviation Safety Authority (CASA) and is effective as of 31 October 2002, as per the compliance section of the AD. This requirement aligns with the technical specifications outlined in the Federal Aviation Administration (FAA) AD 2000-08-08 Amdt39-11694, with reference to the Boeing Alert Service Bulletin 737-57-1253. The directive’s application is confined to the Commonwealth of Australia, ensuring that all relevant aircraft within the specified series and line numbers comply with the safety measures stipulated.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39, include an Airworthiness Directive (AD) for Boeing 737 series aeroplanes, detailing requirements for maintaining the structural integrity of the keel beam structure. This directive applies to Boeing 737-600, -700, and -800 series aircraft, line numbers 1 through 321 (section 1). The directive mandates that the corrective action, as outlined in the requirement section, must be implemented to address the unsafe condition. This action is to be performed in accordance with the technical requirements of FAA AD 2000-08-08 Amdt39-11694 and is referenced in Boeing Alert Service Bulletin 737-57-1253 (section 2). Compliance with this directive must occur by 31 October 2002, as specified in the requirement document (section 3). The obligations imposed by this AD on the relevant parties include ensuring that all specified actions are completed accurately and within the stipulated timeframe. Operators of the affected aircraft must adhere to the instructions and technical requirements provided in FAA AD 2000-08-08 Amdt39-11694 and Boeing Alert Service Bulletin 737-57-1253. Failure to comply with these obligations may result in the aircraft being deemed unairworthy and subject to further investigation or grounding. Additionally, operators must maintain records of the actions taken and ensure that the aircraft are fit for continued operation. Failure to comply with the provisions of this Airworthiness Directive can lead to severe consequences. Non-compliance is considered a breach of civil aviation safety regulations, potentially resulting in penalties under the Civil Aviation Act 1988. In cases of serious non-compliance, the maximum penalty may include fines up to $275,000 for a corporation or $55,000 for an individual, as well as potential imprisonment for directors or responsible persons. Furthermore, the aircraft may be grounded, leading to significant operational disruptions and financial implications for the operators. The AD aims to ensure that all necessary measures are taken to prevent structural failure and maintain the safety of the aircraft in operation.