AD/SWSA226/48 - Swivel Reading Lights - Inspection/Modification

Overview

The Civil Aviation Regulations 1998, amended by the legislative instrument F2006B07188, address specific safety concerns related to the Fairchild (Swearingen) SA226 and SA227 series aeroplanes. Enacted by the Commonwealth of Australia, this legislation aims to ensure the airworthiness of these aircraft models by issuing safety directives. The particular focus of this directive is on the potential risk of fire caused by a short circuit in the swivel reading lights of certain Merlin III, Merlin IIIB, and Merlin IV models. The policy objective is to mandate inspections and modifications to the reading lights to mitigate the risk of fire, ensuring compliance by a specified deadline. This regulation is part of a broader effort to maintain high safety standards in civil aviation, overseen by the Civil Aviation Safety Authority.

Scope and Application

The Civil Aviation Regulations 1998, under Part 39 - 105, mandate the application of the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, specifically pertaining to the Fairchild (Swearingen) SA226 and SA227 series aeroplanes. This directive, AD/SWSA226/48, is concerned with the inspection and modification of swivel reading lights to prevent potential fire hazards. It applies to specific models and serial numbers of the Merlin III, Merlin IIIB, and Merlin IV series of SA226-T and SA226-AT aeroplanes. The directive mandates that these aircraft undergo a compliance check prior to 31 December 1984 to mitigate the risk of a short circuit causing a fire due to the proximity of the overhead air hoses to the electrical terminals of the reading lights. The regulation extends across the Commonwealth of Australia and is enforced by the Civil Aviation Safety Authority, ensuring that all relevant aircraft meet the specified safety standards. This directive does not explicitly mention any exclusions, exemptions, or thresholds, but it is noted that the directive's application can be extended or restricted through subordinate instruments.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, detail the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives. One such directive is AD/SWSA226/48, which pertains to Fairchild (Swearingen) SA226 and SA227 series aeroplanes. This directive mandates inspection and modification of the swivel reading lights for certain models of the aircraft (section 1). The directive applies to Merlin III model SA226-T with serial numbers (S/No.) T249 through T291, excluding T276, as well as Merlin IIIB model SA226-T(B) with S/No. T(B) 276, T(B) 292 through T(B) 417, and Merlin IV model SA226-AT with S/No. AT025, AT027 through AT074. Under this directive, the primary requirement is for compliance with Fairchild Aircraft Corporation Service Bulletin (SB) 33-003, revised on 5th October 1983. This involves inspecting and, if necessary, modifying the reading lights to prevent any potential short circuits between the overhead air hoses and the electrical terminals (section 2). All modifications and inspections must be completed before 31 December 1984 to ensure compliance with the directive. The obligations imposed on the parties governed by this directive include ensuring that the specified aircraft models undergo the required inspection and modification of the reading lights as per the Fairchild Aircraft Corporation SB 33-003. This involves verifying that the modifications have been correctly implemented to mitigate the risk of fire due to potential short circuits. Failure to comply with the directive could result in non-compliance with airworthiness standards, potentially leading to aircraft being grounded or not being permitted to fly until the required modifications are completed. In terms of consequences for non-compliance, the breach of this airworthiness directive can result in various civil or criminal penalties. Under the Civil Aviation Act 1988, non-compliance with an airworthiness directive may lead to enforcement actions by CASA, which can include fines or other penalties as determined by the relevant authorities. The severity of the penalties can depend on the degree of non-compliance and the potential risk posed to aviation safety. In cases where non-compliance results in an accident or incident, the penalties can be more severe, reflecting the gravity of the breach.