AD/PL 12/4 - Stub Wing Structure - Inspection

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority, were enacted to regulate civil aviation in Australia and ensure the safety of air travel. A specific legislative instrument, F2006B06269, pertains to airworthiness directives for certain aircraft models, such as the Transavia PL 12 Series Aeroplanes. This instrument was introduced to address potential safety issues related to the structural integrity of these aircraft, particularly focusing on the inspection of the stub wing leading edge tube for signs of cracking near the landing gear attachment. The policy objective of this directive is to maintain the airworthiness of these aircraft by implementing regular inspections, thereby mitigating the risk of in-flight structural failures. This approach ensures compliance with safety standards and protects the safety of passengers and crew.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, establishes a schedule of airworthiness directives applicable to various aircraft within Australia, including those under the Transavia PL 12 Series. These regulations apply to all models of the specified aircraft, ensuring that they meet stringent safety standards set by the Civil Aviation Safety Authority. The directive AD/PL 12/4 mandates that the stub wing leading edge tube must be inspected for cracking, particularly in the area near the landing gear attachment. This inspection is required within 100 hours of the aircraft being in service following 14 February 1969 and must be repeated at intervals not exceeding 100 hours of service thereafter. These regulations extend their reach across the Commonwealth, ensuring uniform safety standards are maintained for civil aviation activities within Australia. No specific exclusions or exemptions are mentioned within the text of this directive, although it is possible that further clarification or exceptions could be provided through subordinate instruments issued under the authority of the Civil Aviation Act 1988.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, provides detailed guidance on airworthiness directives, with a focus on the Transavia PL 12 Series Aeroplanes (section 12/68). This directive mandates a critical inspection of the stub wing leading edge tube for any signs of cracking, particularly in the area where it attaches to the landing gear. This inspection is to be carried out on all models of the Transavia PL 12 Series Aeroplanes to ensure continued airworthiness and safety. The primary requirement under this directive is that the inspection of the stub wing leading edge tube must be performed within 100 hours of time in service after 14 February 1969 and subsequently at intervals not exceeding 100 hours of time in service. This regulation is intended to ensure that any potential structural issues are identified and addressed promptly, thus preventing any risk to flight safety. Compliance with this directive is mandatory for all operators of the Transavia PL 12 Series Aeroplanes, and failure to adhere to the prescribed inspection schedule can compromise the safety of the aircraft. Operators and owners of the Transavia PL 12 Series Aeroplanes must ensure that the inspections are carried out by qualified personnel and that any findings are documented appropriately. The inspections should be thorough, and any detected cracks or structural issues must be repaired or managed according to accepted engineering practices and approved maintenance procedures. Additionally, operators must maintain records of all inspections and any repairs made, which must be readily available for review by the Civil Aviation Safety Authority (CASA) upon request. Failure to comply with the inspection requirements outlined in the directive can result in significant civil and criminal consequences. Under the Civil Aviation Act 1988, non-compliance may lead to enforcement actions by CASA, which can include fines, suspension or revocation of airworthiness certificates, and potential criminal charges for serious breaches. The maximum penalties for contravening the Civil Aviation Regulations can be substantial, reflecting the critical nature of ensuring aircraft safety. It is therefore imperative that operators adhere strictly to the mandated inspection intervals and procedures to avoid any legal repercussions.