AD/DO-27/11 - Wing Flap Position Selector

Overview

The Civil Aviation Regulations 1998, amended by F2006B09295, were enacted by the Commonwealth of Australia to address issues related to the airworthiness of aircraft, including the need to improve safety standards and ensure compliance with international safety directives. This particular legislative instrument targets the Dornier DO-27 series aeroplanes, aiming to enhance the longitudinal controllability of these aircraft during landing configurations. The policy objective is to ensure that all affected aircraft meet specific safety standards by implementing modifications as outlined in Dornier Service Bulletin 1116-0000, with a requirement for compliance prior to 1 March 1989. The changes also necessitate an amendment to the Flight Manual to restrict maximum flap deflection to 35 degrees, ensuring that the aircraft's operational safety is maintained in accordance with the prescribed standards.

Scope and Application

The Civil Aviation Regulations 1998, as amended, pertain to the regulation and safety standards for civil aviation in Australia, encompassing various aspects of airworthiness and operational procedures. Specifically, Part 39 - 105, which includes the Airworthiness Directives, governs the mandatory compliance requirements for aircraft manufacturers and operators to ensure the safe operation of their aircraft. This particular directive, AD/DO-27/11, applies to all models of Dornier DO-27 Series aeroplanes, mandating that modifications be made to the wing flap position selector in accordance with Dornier Service Bulletin 1116-0000. The directive stipulates that any required actions must be completed prior to 1 March 1989, with additional requirements for the flight manual to be updated to restrict maximum flap deflection to 35 degrees before this date. This directive is intended to enhance the aircraft's longitudinal controllability during landing, thereby ensuring continued compliance with airworthiness standards. The directive’s scope is limited to the specified modifications and does not extend to other areas of aircraft operation or maintenance unless explicitly noted in subsequent regulations or directives.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, outline a schedule of airworthiness directives that are crucial for ensuring the safety and compliance of certain aircraft. In this case, AD/DO-27/11 pertains to the Dornier DO-27 Series Aeroplanes, focusing on the wing flap position selector. The requirement under section (2/89) is that all models of the Dornier DO-27 must comply with Dornier Service Bulletin 1116-0000. The directive references LBA AD 88-109, indicating that these modifications are in line with established airworthiness standards. The compliance date is set before 1 March 1989, ensuring that all modifications are completed well in advance. Additionally, the Flight Manual must be updated to a G1 status, restricting the maximum flap deflection to 35 degrees prior to 1 March 1989 if not already done. This update is intended to enhance the longitudinal controllability of the aircraft during landing. The obligations imposed by this airworthiness directive are clear and specific. Owners and operators of Dornier DO-27 Series Aeroplanes must ensure that their aircraft comply with the requirements set out in the Dornier Service Bulletin 1116-0000. This includes completing any necessary modifications to the wing flap position selector before the compliance date of 1 March 1989. Furthermore, operators must update their Flight Manual to reflect the new restriction on flap deflection, ensuring that the maximum deflection does not exceed 35 degrees. These obligations are critical to maintaining the safety and airworthiness of the aircraft, ensuring that it meets the necessary standards for operation. Failure to comply with the provisions of AD/DO-27/11 could result in various legal and safety consequences. The Civil Aviation Regulations 1998 do not explicitly detail penalties for non-compliance with airworthiness directives in this particular context, but general regulations apply. Non-compliance could potentially lead to enforcement actions by the Civil Aviation Safety Authority (CASA). These actions may include fines, operational restrictions, or even grounding of the aircraft until the required modifications are completed. Such consequences underscore the importance of adhering to the specified compliance dates and requirements to avoid any legal repercussions or safety hazards.