AD/B767/36 Amdt 1 - High Lift System

Overview

The Civil Aviation Regulations 1998 (Cth), as amended by the Legislative instrument F2006B03391, was enacted to ensure the ongoing safety and airworthiness of civil aviation in Australia. This particular amendment to Part 39 - 105, titled "Civil Aviation Safety Authority Schedule of Airworthiness Directives", specifically addresses Boeing 767 series aeroplanes. The legislation was introduced to address identified safety concerns, such as uncommanded slat extensions during cruise and instances of inoperative trailing edge flap by-pass motors, by mandating compliance with Boeing Service Bulletin 767-27A0094 Revision 4. The policy objective is to maintain the highest safety standards by ensuring that aircraft meet the necessary inspection and maintenance requirements to prevent such incidents. The enactment of this legislation by the Civil Aviation Safety Authority under the authority of the Civil Aviation Act 1988 (Cth) ensures that all model 767 series aeroplanes with line positions 001 through 402 inclusive must adhere to the specified actions outlined in the requirement document. This includes regular inspections and maintenance of critical components such as the LE slat shutoff valve, the LE slat long term shutoff control, the inboard and outboard LE slat drive mechanical rigging, and the TE flap by-pass valve motor. Compliance with these directives is crucial for maintaining the airworthiness of the aircraft and ensuring the safety of all passengers and crew.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Airworthiness Directives issued by the Civil Aviation Safety Authority, which in this case, relates to the Boeing 767 series aeroplanes with line positions ranging from 001 to 402. This legislation applies to all entities and aircraft manufacturers involved in the operation, maintenance, and production of these specific models within the designated serial number range. The directive mandates compliance with Boeing Service Bulletin 767-27A0094 Revision 4, which supersedes the earlier FAA Airworthiness Directive 89-26-04 amendment 39-6423, and is itself superseded by FAA AD 93-19-05 amendment 39-8703. The directive's geographic reach is national, applying across the Commonwealth of Australia, and is intended to ensure the safety and airworthiness of the specified Boeing 767 aeroplanes. The directive requires regular inspections and actions to address issues such as uncommanded slat extensions and inoperative trailing edge flap bypass motors, as identified in the requirement document. There are no stated exclusions or exemptions within the scope of this directive, and compliance is mandatory for all applicable aircraft within the specified serial number range.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandate adherence to Airworthiness Directives (ADs) for aircraft safety, with AD/B767/36 Amendment 1 being pertinent to Boeing 767 series aeroplanes. This directive applies to all model 767 series aeroplanes with line positions 001 through 402 inclusive (s. 39-105). The primary requirement is that actions must be taken in accordance with Boeing Service Bulletin (SB) 767-27A0094 Revision 4 (s. AD/B767/36 Amdt 1). Notably, Federal Aviation Administration (FAA) AD 93-19-05 Amendment 39-8703 supersedes the previous FAA AD 89-26-04 Amendment 39-6423. Compliance is to be achieved as detailed in the requirement document. Under these regulations, operators and owners of the specified Boeing 767 series aeroplanes are obligated to ensure regular inspections and maintenance of critical components as outlined in Boeing SB 767-27A0094 Revision 4. These components include the LE slat shutoff valve, the LE slat long-term shutoff control, the inboard and outboard LE slat drive mechanical rigging, and the TE flap bypass valve motor. The inspections are necessary to address issues such as uncommanded slat extensions during cruise and inoperative trailing edge flap bypass motors, which have been reported (s. AD/B767/36 Amdt 1 Background). Failure to comply with these ADs can lead to significant legal and safety consequences. Operators may face enforcement actions under the Civil Aviation Safety Authority (CASA), which can include fines, operational restrictions, or even the grounding of the aircraft if it is deemed unsafe. The exact nature and severity of the penalties are determined based on the specific circumstances of the non-compliance, but they can be substantial, reflecting the critical nature of maintaining airworthiness standards (s. 39-105 Compliance). In cases of wilful or negligent breaches, there may be additional criminal penalties imposed. These can include fines and imprisonment, underscoring the serious implications of failing to adhere to airworthiness directives. The maximum penalties for such breaches can vary, but they are designed to ensure high standards of compliance to protect public safety (s. 39-105 Penalties).