AD/B727/86 - Passenger Oxygen Mask Tube Attachment

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, aim to ensure the safety and efficiency of civil aviation. Within this framework, Part 39 - 105 Civil Aviation Safety Authority Schedule of Airworthiness Directives provides specific directives to maintain the airworthiness of various aircraft, including the Boeing 727 Series Aeroplanes. One such directive, AD/B727/86, pertains to the attachment of passenger oxygen mask tubes, particularly addressing the issue of inadvertent disconnections that could compromise passenger safety. This directive was introduced to address the identified risk following advice from overseas authorities and mandates compliance within 2000 hours of time in service after 30 April 1980, referencing Boeing Service Bulletin No. 727-35-A18 or FAA AD 79-23-02. The policy objective is to mitigate safety risks by ensuring that modifications are made to the passenger oxygen manifold orifice fittings, thereby preventing any potential disconnections of the oxygen supply tubes.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, which includes the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, applies to all Boeing 727 series aeroplanes that have "Carry-all" interior passenger service units. The directive AD/B727/86 concerns the attachment of passenger oxygen mask tubes, requiring compliance with either Boeing Service Bulletin No. 727-35-A18 or Federal Aviation Administration Advisory Directive 79-23-02. The directive mandates that modifications be carried out within 2000 hours of time in service after 30 April 1980 to prevent the inadvertent disconnection of passenger oxygen supply tubes. This regulation applies to the Commonwealth of Australia and is enforced by the Civil Aviation Safety Authority. The directive does not explicitly state any exclusions, exemptions, or thresholds other than the specified timeframe for compliance. Subordinate instruments may further detail the implementation and compliance procedures for this directive.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, include a directive pertaining to the airworthiness of Boeing 727 Series aeroplanes. This directive, AD/B727/86, focuses on the passenger oxygen mask tube attachment and applies to all models equipped with "carry-all" interior passenger service units (section 1). The directive mandates compliance with either Boeing Service Bulletin No. 727-35-A18 or Federal Aviation Administration Advisory Directive 79-23-02 (section 2). The directive requires that the specified modifications be carried out within 2000 hours of time in service after 30 April 1980 (section 3). The obligations imposed by this directive are clear and directive-specific. Operators of Boeing 727 Series aeroplanes must ensure that the passenger oxygen mask tubes are securely attached to prevent inadvertent disconnections. This is achieved by following the modifications outlined in Boeing SB No. 727-35-A18 or FAA AD 79-23-02. The directive applies to all applicable aircraft models and requires compliance within the specified timeframe. Failure to adhere to these requirements could result in the aircraft being deemed unairworthy, leading to potential grounding or other regulatory actions (section 4). The consequences for non-compliance with AD/B727/86 can be significant. The directive does not explicitly state penalties within the text, but non-compliance could lead to enforcement actions by the Civil Aviation Safety Authority (CASA). Such actions might include fines, operational restrictions, or more severe penalties if the non-compliance results in safety incidents. The severity of the consequences depends on the extent of the non-compliance and its impact on the safety of the flight operations. Operators are therefore strongly encouraged to adhere to the directive to avoid any regulatory or safety repercussions (section 5).