AD/SA-TP/24 - Engine Nacelle Upper Longerons

Overview

The Civil Aviation Regulations 1998, amended by the Legislative instrument F2006B06773, specifically address the maintenance and operational safety of British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes through Airworthiness Directives. This legislation was enacted to ensure that the operational integrity and safety of these aircraft are maintained by enforcing stringent inspection and modification requirements. The Australian Parliament introduced this regulation to address identified safety concerns related to the engine nacelle upper longerons of the Twin Pioneer Series Aeroplanes, as specified in Scottish Aviation TNS No. 45 and Mod. No. C759. The primary policy objective behind this directive is to mandate immediate compliance with specified inspection intervals not exceeding 200 hours of time in service and to require modifications to be undertaken forthwith to mitigate any identified risks.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, outlines Airworthiness Directives pertinent to ensuring the safety and airworthiness of aircraft within the Australian jurisdiction. One such directive, AD/SA-TP/24, focuses on the British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes and mandates specific attention to the engine nacelle upper longerons. This directive applies to all models of the specified aircraft series and references Scottish Aviation Technical Notice No. 45 and Modification Notice No. C759. Compliance with this directive requires inspections at intervals not exceeding 200 hours of time in service, with necessary modifications to be undertaken forthwith. The directive's scope is explicitly limited to the designated aircraft models and does not extend to other aircraft types or series. The geographic reach of this regulation is national, enforcing compliance across the entirety of Australian airspace. The regulation does not specify exclusions, exemptions, or thresholds within the text provided, but it is understood that any deviations or exceptions would be addressed through subordinate instruments or additional regulatory guidance.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39 - 105, specifically addresses the airworthiness directives concerning the British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes, particularly the Engine Nacelle Upper Longerons. The relevant directive (AD/SA-TP/24) mandates that all models of this aircraft series, as documented in Scottish Aviation TNS No. 45 and Mod. No. C759, must adhere to certain airworthiness standards (105.01). These directives require a compliance action that must be undertaken immediately, specifically focusing on the inspection of the Engine Nacelle Upper Longerons. The inspection is required to be performed at intervals not exceeding 200 hours of time in service, ensuring the aircraft remains airworthy and safe for operation (105.02). Operators of the Twin Pioneer Series Aeroplanes are obligated to ensure that these inspections are conducted within the specified timeframe to maintain compliance with the regulations. The directive also includes a requirement for modification, which must be carried out forthwith, meaning immediately upon identification of any deficiencies in the Engine Nacelle Upper Longerons (105.03). Failure to comply with these airworthiness directives can lead to serious consequences. Operators found in breach of these regulations may face enforcement actions, including fines and potential grounding of the aircraft until compliance is achieved. Such non-compliance not only poses a risk to the safety of the aircraft but also could result in severe penalties as stipulated by the Civil Aviation Safety Authority (105.04). The specific maximum penalties are not detailed within the directive, but they can be severe, reflecting the critical importance of adhering to these safety requirements.