AD/DH 104/25 Amdt 1 - Flap Datum Hinge Assembly - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, are comprehensive regulations governing all aspects of civil aviation in Australia, including aircraft operations, maintenance, and airworthiness. The Civil Aviation (Airworthiness) Regulations 1998, which are part of these overarching regulations, provide detailed provisions for ensuring that aircraft meet specific safety standards. One such provision is Airworthiness Directive (AD) DH 104/25 Amendment 1, which pertains to the Hawker Siddeley Dove series aeroplanes. This AD was introduced to address specific safety concerns related to the flap datum hinge assembly, ensuring that all models of these aeroplanes undergo necessary inspections to maintain airworthiness. The objective of this directive, as outlined in the regulations, is to enhance aviation safety by mandating regular inspections and maintenance of critical components, thereby preventing potential in-flight failures and ensuring the continued safe operation of the aircraft.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to the Civil Aviation Safety Authority (CASA) schedule of airworthiness directives which are mandatory for compliance within the Australian aviation industry. This particular regulation, AD/DH 104/25 Amendment 1, applies to all models of the DH 104 (Dove) series aeroplanes. The directive mandates inspections of the flap datum hinge assembly for these aircraft. The applicability of this directive is universal across all DH 104 models, necessitating adherence to the prescribed compliance timeline and inspection criteria as outlined in Hawker Siddeley TNS CT(104) No. 216 Issue 2. Specifically, compliance for Paragraph 4.1 is required within 25 hours of time in service after 20 July 1970, while compliance for Paragraphs 4.2 and 4.3 must align with the requirements detailed in the referenced document. This regulation enforces stringent safety measures to ensure the continued airworthiness of DH 104 series aeroplanes within the Australian airspace.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, includes provisions concerning the maintenance and inspection of the Hawker Siddeley Dove series aeroplanes. One such directive is AD/DH 104/25 Amendment 1, which focuses on the flap datum hinge assembly inspection (section 7/70). This directive applies to all models of the Dove series aeroplanes and is applicable from 20 July 1970. The compliance requirement for this directive is detailed in the Hawker Siddeley Technical Notice CT(104) No. 216 Issue 2. Under this legislation, the key obligations for the operators and maintainers of Dove series aeroplanes include conducting a thorough inspection of the flap datum hinge assembly. Specifically, for paragraph 4.1, the inspection must be completed within 25 hours of the aeroplane's time in service after the directive was issued. For paragraphs 4.2 and 4.3, the inspections must be carried out in accordance with the requirements outlined in the referenced document, Hawker Siddeley Technical Notice CT(104) No. 216 Issue 2. These obligations ensure that the aeroplanes maintain their airworthiness and comply with the safety standards set by CASA. Failure to comply with the inspection requirements set out in the Civil Aviation Regulations can lead to significant consequences. Under the regulations, non-compliance can result in the aeroplane being grounded until the necessary inspections are completed and any issues are rectified. Moreover, CASA has the authority to take enforcement action against operators and maintainers who do not adhere to the airworthiness directives. This can include fines, suspension or revocation of air operator certificates, and other penalties as deemed appropriate by CASA. The seriousness of these consequences underscores the importance of strict adherence to the inspection requirements outlined in the legislation.