AD/SUPP/4 - Air Equipment Rescue Hoist - Inspection and Modification of Squib

Overview

The Civil Aviation Regulations 1998 were enacted by the Australian Parliament to regulate and ensure the safety of civil aviation within Australia. One of the key legislative instruments under this Act is the Civil Aviation Safety Authority Schedule of Airworthiness Directives, which includes AD/SUPP/4 concerning the inspection and modification of squibs on specific air equipment rescue hoists. The problem this directive addresses is the reported overseas defects in certain rescue hoists that could potentially render the pyrotechnical shearing device inoperative, thus posing a risk to safety. The policy objective is to mitigate these risks by requiring inspections and modifications to the specified hoists to ensure they meet the necessary safety standards before their operation. Compliance with these directives is mandatory to ensure that such risks are minimised. This legislative instrument is part of the broader framework established by the Civil Aviation Safety Authority to oversee and enforce airworthiness standards, ensuring that aircraft and related equipment meet the highest safety requirements. By specifically addressing the identified defects in rescue hoists, the directive aims to prevent operational failures that could lead to serious safety incidents. The directive is applicable to specific part numbers of air equipment rescue hoists and requires compliance by a certain date to ensure safety measures are implemented without delay.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 107, addresses the safety directives concerning supplementary equipment in civil aviation, including air equipment rescue hoists. The legislation applies to air equipment rescue hoists with specific part numbers (76370, 76370-010, 76370-020, and 76375) installed on certain helicopter models, such as Aerospatiale SA 341, SA 342, 3160, 316, 319, AS350, AS 355, SA 360C, SA 365C, and SA 365N. The directive mandates inspections and modifications of these hoists to ensure they meet safety standards and are not inoperative, which has been an issue in some overseas incidents. The requirement is to inspect and modify the hoists according to specified service bulletins or provide a hand cable cutter for quick cable cuts if modifications are not feasible. Compliance deadlines are set, with certain inspections and modifications needing to be completed before 1 October 1982, and the provision of a hand cable cutter required before operating the hoist. The regulations extend across the Commonwealth, impacting operators and maintenance personnel of the specified helicopter models within Australia.

Key Provisions

The key sections of the Civil Aviation Regulations 1998, Part 39 - 107, specifically concerning Air Equipment Rescue Hoists, require that certain hoists be inspected and modified in accordance with specified Air Equipment Service Bulletins. The air equipment in question pertains to rescue hoists with parts numbers 76370, 76370-010, 76370-020, and 76375, installed on various Aerospatiale helicopters. The main requirement is that hoists with parts numbers 76370, 76370-010, and 76370-020 must be inspected and modified in line with Air Equipment Service Bulletin 25-62-0C Rev. 1 or later approved revisions (section 1). For hoists with part number 76375, the requirement is to inspect and modify them according to Air Equipment Service Bulletin 25-69-0B Rev. 1 or later approved revisions (section 2). Furthermore, for any hoists not modified in accordance with these directives, the provision of a hand cable cutter capable of ensuring a positive quick cable cut is mandatory (section 3). The obligations imposed by these provisions are clear and straightforward. Operators of the specified helicopters must ensure that the air equipment rescue hoists meet the inspection and modification requirements outlined in the Air Equipment Service Bulletins. Specifically, the modifications must be completed before 1 October 1982 for hoists referenced in sections 1 and 2, and a hand cable cutter must be available before the hoist is operated if it has not been modified as per the directives. Compliance with these regulations is critical to ensure the airworthiness of the helicopters and the safety of the crew and passengers. Failure to comply with the provisions outlined in the Civil Aviation Regulations 1998 can result in serious consequences. The regulations impose strict requirements for the inspection and modification of specified air equipment rescue hoists, and non-compliance can lead to significant safety risks. While the specific penalties for breaches are not detailed in the text, it is well understood that non-compliance with aviation safety regulations can lead to both civil and criminal penalties, including fines, operational restrictions, and potential imprisonment. The severity of the penalties reflects the critical importance of adhering to these safety directives to prevent potential in-flight failures and ensure the safety of all individuals involved.