AD/PA-34/11 - Wing Skin/Rib - Inspection and Modification

Overview

The Civil Aviation Regulations 1998 (Cth), specifically within Part 39 - 105 Civil Aviation Safety Authority Schedule of Airworthiness Directives, address the issue of ensuring the continued airworthiness of aircraft by issuing directives that mandate specific actions to be taken to maintain safety standards. This regulatory framework was enacted by the Australian Government to ensure that civil aviation operations adhere to stringent safety requirements. The Civil Aviation Safety Authority (CASA), as the enforcing body, issues these directives to mitigate risks associated with aircraft operations, ensuring that all aircraft maintain their airworthiness and comply with safety standards set forth in the regulations. This particular directive, AD/PA-34/11, pertains to Piper PA-34 (Seneca) Series aeroplanes, specifically targeting the wing skin and rib components of certain model numbers to ensure they meet safety criteria within a specified timeframe post-manufacture. The Piper PA-34 (Seneca) Series Aeroplanes AD/PA-34/11 directive was introduced to address safety concerns related to the structural integrity of the wing skin and ribs of specific Piper PA-34 models. This legislative instrument aims to ensure that these components are inspected and modified as necessary to prevent potential structural failures that could compromise flight safety. By mandating a compliance period of within 100 hours of time in service after the directive's issuance date, the regulation ensures timely intervention to rectify any identified issues. The directive applies to models PA-34-200 with serial numbers ranging from 34-E4, 34-7250001 to 34-7250360, and 34-7350001 to 34-7350234, aligning with the manufacturer's Service Letter No. 664, which provides the technical basis for the required actions.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, issued by the Civil Aviation Safety Authority, includes an Airworthiness Directive (AD) pertaining to the Piper PA-34 (Seneca) series aeroplanes. This legislation mandates inspection and modification of the wing skin and rib for specific models of the Piper PA-34-200 series, identified by their serial numbers. The directive applies to aircraft with serial numbers ranging from 34-E4, 34-7250001 to 34-7250360, and 34-7350001 to 34-7350234. Compliance with these directives is required within 100 hours of the aircraft's time in service post 28 June 1974, as outlined in Piper Service Letter No. 664. This directive encompasses the entire Commonwealth of Australia, ensuring that the specified aircraft within its jurisdiction adhere to the outlined safety measures. No exclusions, exemptions, or thresholds are specified within the text of this particular directive, although the scope and specifics of the regulations may be further detailed in subordinate instruments or associated documentation.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39, specifically in Section 105, include Airworthiness Directives for Piper PA-34 (Seneca) Series Aeroplanes. The particular directive in focus is AD/PA-34/11, which mandates inspections and modifications to the wing skin and ribs (Section 6/74). This directive applies to Model PA-34-200 aircraft with specific serial numbers: 34-E4, 34-7250001 to 34-7250360, and 34-7350001 to 34-7350234. Compliance with this directive is essential and must be carried out in accordance with Piper Service Letter No. 664. The directive requires that the inspection and necessary modifications be completed within 100 hours of the aircraft's time in service after 28 June 1974. The obligations imposed by this directive are specific and must be strictly adhered to by the aircraft owners and operators. The directive mandates that the aircraft must undergo a thorough inspection of the wing skin and ribs to identify any structural issues or weaknesses. If any deficiencies are found, they must be rectified by following the detailed procedures outlined in Piper Service Letter No. 664. This ensures that the aircraft maintains its airworthiness and complies with safety standards set forth by the Civil Aviation Safety Authority. Failure to comply with the requirements of AD/PA-34/11 can lead to significant consequences. The Civil Aviation Regulations 1998 establish that non-compliance with airworthiness directives is an offence. The potential penalties for such breaches can be severe, including substantial fines and possible imprisonment. The exact penalties are determined by the severity of the breach and are outlined in the relevant sections of the Civil Aviation Act 1988. It is imperative that aircraft operators ensure full compliance to avoid these adverse outcomes. In summary, AD/PA-34/11 is a critical directive aimed at ensuring the safety and airworthiness of specified Piper PA-34-200 Seneca Series Aeroplanes. The directive mandates inspections and modifications to the wing skin and ribs, with compliance required within 100 hours of service after the specified date. Non-compliance can result in serious legal and financial repercussions, underscoring the importance of adherence to the directive's requirements.