Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, form a comprehensive regulatory framework designed to ensure the safety and efficiency of civil aviation within Australia. One of the key components of this regulation is the Airworthiness Directives, specifically AD/DH114/34 Amendment 1, which applies to all models of the Heron (DH114) Series Aeroplanes. This directive was introduced to address specific safety concerns related to the fuselage keel frame at the wing NK rear spar. The problem it seeks to resolve includes ensuring that inspections of this critical component are conducted within specified timeframes, namely within 25 hours of time in service or thirty days after 1 May 1972, whichever occurs first, and then at intervals not exceeding 600 hours of time in service. The policy objective underlying this directive is to maintain the airworthiness of the aircraft, thereby safeguarding the safety of all passengers and crew on board.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertain to the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, with a focus on the DH114 (Heron) series aeroplanes. This regulatory framework applies to all models of the Heron series aeroplanes, stipulating mandatory inspections of the fuselage keel frame at the wing NK rear spar. The directive aims to ensure the continued airworthiness of these aircraft by enforcing a stringent inspection regime. Compliance is required within 25 hours of time in service or thirty days from 1 May 1972, whichever comes first, followed by inspections at intervals not exceeding 600 hours of time in service. The Hawker Siddeley TNS Heron (114) No. F.17, Issue 1 document outlines the requirement, and inspections performed according to the preceding issue of this directive may be considered as fulfilling the initial inspection requirement specified in the regulation. The scope of this directive is national, ensuring uniform safety standards across all jurisdictions within Australia.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority Schedule of Airworthiness Directives for DH114 (Heron) Series Aeroplanes, contain the necessary provisions for ensuring the safety and airworthiness of these aircraft. Section AD/DH114/34 Amendment 1 outlines the applicability and requirements for inspecting the fuselage keel frame at the wing NK rear spar. This directive applies to all models of the Heron series aeroplanes, ensuring a standardised approach to maintaining the structural integrity of these aircraft (AD/DH114/34 Amdt 1). The main requirement is to conduct an inspection of the fuselage keel frame at the wing NK rear spar within 25 hours of time in service or thirty days, whichever occurs first, after 1 May 1972. This initial inspection must be followed by subsequent inspections at intervals not exceeding 600 hours of time in service (AD/DH114/34 Amdt 1). The obligations imposed by this directive on the operators and maintenance personnel of Heron series aeroplanes are clear and specific. Operators must ensure that the initial inspection is completed within the prescribed timeframe, and they must maintain a rigorous schedule for subsequent inspections to ensure ongoing compliance with the directive (AD/DH114/34 Amdt 1). Maintenance personnel are required to perform these inspections meticulously, adhering to the guidelines provided in the Hawker Siddeley TNS Heron (114) No. F.17, Issue 1 document. This document serves as the reference for the technical details and procedures necessary to carry out the inspections effectively (AD/DH114/34 Amdt 1). Failure to comply with these provisions can result in significant consequences. Non-compliance with the inspection requirements outlined in the Civil Aviation Regulations 1998 may lead to penalties, both civil and criminal, depending on the severity of the breach. The specific penalties are not detailed in the text, but it is understood that breaches of aviation safety regulations can result in substantial fines, potential grounding of the aircraft, and even criminal charges against individuals or entities responsible for the non-compliance (AD/DH114/34 Amdt 1). Given the critical nature of ensuring the airworthiness of aircraft, adherence to these directives is paramount to maintaining safety standards in the aviation industry.