AD/PA-44/15 - Wing and Carry-Through Structure

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, address the critical need to ensure the safety and airworthiness of aircraft operating within Australian airspace. The regulations, overseen by the Civil Aviation Safety Authority (CASA), aim to provide comprehensive guidelines and directives to mitigate safety risks associated with civil aviation. Specifically, Part 39 - 105 under the Civil Aviation Regulations 1998 outlines the mandatory Airworthiness Directives for various aircraft types, including the Piper PA-44 (Seminole) Series Aeroplanes. The directive AD/PA-44/15 pertains to the wing and carry-through structure of these aeroplanes, establishing a requirement for the retirement of specific components based on operational hours to ensure continued safety and compliance with airworthiness standards. The policy objective is to enforce a safety-driven approach, limiting the operational life of critical structural elements to prevent potential failures and enhance overall aviation safety.

Scope and Application

The Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998, Part 39 - 105, governs the airworthiness directives for the Piper PA-44 (Seminole) series aeroplanes, specifically outlined in AD/PA-44/15. This regulation applies to all models of the Piper PA-44 series, mandating the retirement of the wing and wing carry-through structure for the PA-44-180 models before reaching 14,600 hours of time in service or within 200 hours from 27 April 1995, whichever comes last. Similarly, the PA-44-180T models must be retired before reaching 16,400 hours of time in service or within 200 hours from 27 April 1995, whichever is later. Additionally, the remainder of the aircraft structure must be retired before exceeding 29,200 hours of time in service. Compliance with these directives is required from the effective date of 27 April 1995. This regulation ensures the safety and airworthiness of the Piper PA-44 series aeroplanes by setting stringent retirement limits on critical components based on their operational hours.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, Part 39 - 105, specifically AD/PA-44/15, establish the service life and retirement requirements for the Piper PA-44 (Seminole) series aeroplanes. Section 1 of this directive requires the retirement of the wing and wing carry-through structure for specific models. For the PA-44-180 model, the wing and carry-through structure must be retired before 14,600 hours of time in service or within 200 hours from 27 April 1995, whichever occurs last. Similarly, for the PA-44-180T model, the same criteria apply, but the limit is set at 16,400 hours of time in service. Section 2 mandates the retirement of the remainder of the aircraft structure before it exceeds 29,200 hours of time in service. These directives are effective as of 27 April 1995. The Civil Aviation Regulations impose specific obligations on aircraft operators to comply with these airworthiness directives. Operators of the Piper PA-44 (Seminole) series aeroplanes must ensure that the wings and carry-through structures of their aircraft are retired according to the specified hours of time in service or the stipulated dates. For the PA-44-180 model, the retirement must occur before reaching 14,600 hours of time in service or within 200 hours after 27 April 1995, whichever is later. For the PA-44-180T model, the retirement must happen before reaching 16,400 hours of time in service or within 200 hours after 27 April 1995, whichever is later. Additionally, operators must ensure that the remainder of the aircraft structure is retired before it exceeds 29,200 hours of time in service. Failure to comply with these airworthiness directives may result in serious consequences. While the Civil Aviation Regulations do not explicitly state the penalties for non-compliance, non-adherence to airworthiness directives can lead to enforcement actions by the Civil Aviation Safety Authority (CASA). These actions may include the grounding of the aircraft, fines, and other administrative measures to ensure compliance with safety regulations. Operators found in breach of these requirements may face significant operational disruptions and legal repercussions, underscoring the importance of strict adherence to the specified directives.