AD/F50/9 - Door External Handles

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Parliament, serves as a comprehensive regulatory framework governing all aspects of civil aviation in Australia. Specifically, Part 39 - 105 pertains to the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, which includes detailed safety mandates for various aircraft models. One such directive is AD/F50/9, concerning the Fokker F50 (F27 Mk 50) Series Aeroplanes, focusing on the door external handles. This directive was introduced to address the problem of excessive wear in the door external handle mechanism, which can lead to moisture ingress and subsequent freezing of the door operating mechanism. The policy objective behind this regulation is to ensure the safety and reliability of the aircraft by mitigating potential risks associated with the identified issue. The Civil Aviation Regulations 1998 aim to maintain high safety standards in the aviation industry, and the specific directive AD/F50/9 exemplifies this commitment by providing clear instructions for addressing the identified problem. The requirement under AD/F50/9 mandates compliance with Fokker Service Bulletin F50-52-007, and references RLD AD 88-91 for additional context. The directive applies to Fokker F50 aircraft with specific serial numbers and mandates that the necessary action be taken before 30 June 1989. This directive ensures that the aircraft maintain their airworthiness and operational safety by preventing issues related to moisture ingress and freezing of the door mechanisms.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the Airworthiness Directives for certain aircraft types, including Fokker F50 (F27 Mk 50) Series Aeroplanes. This particular directive, AD/F50/9, pertains to the door external handles of Fokker F50 aircraft with serial numbers ranging from 20103 to 20108 and 20110. The directive mandates compliance with Fokker Service Bulletin F50-52-007 to mitigate the risk of excessive wear in the door external handle mechanism, which can lead to moisture ingress and subsequent freezing of the door operating mechanism. This directive applies to aircraft that must have complied with these requirements prior to 30 June 1989. The geographic reach of this regulation is national, governed by the Commonwealth of Australia, ensuring uniform application across the country. The directive does not specify exclusions or exemptions but refers to RLD AD 88-91 for additional context. Compliance with this directive is critical for maintaining airworthiness standards and ensuring passenger safety.

Key Provisions

The Civil Aviation Regulations 1998, specifically under PART 39 - 105, includes Airworthiness Directives (ADs) which are legally binding requirements to ensure the safety of aircraft. AD/F50/9 pertains to Fokker F50 (F27 Mk 50) Series Aeroplanes, detailing the necessary actions for door external handles (Section 3/89). This directive applies to F27-050 Series Numbers (S/Nos) ranging from 20103 to 20108 and 20110. The directive mandates that action must be taken in accordance with Fokker Service Bulletin F50-52-007. The requirement for compliance is aligned with previous directives, specifically RLD AD 88-91, and it was stipulated that compliance must be achieved before 30 June 1989. The obligations under this AD are clear and directive. Owners and operators of the specified Fokker F50 (F27 Mk 50) aircraft must follow the instructions outlined in Fokker Service Bulletin F50-52-007 to ensure the external door handles are in proper working condition. This involves a thorough inspection and, if necessary, the repair or replacement of the door handle mechanisms. The purpose of these requirements is to prevent excessive wear which can lead to moisture ingress, and subsequently, the freezing of the door operating mechanism. This is critical to maintaining the airworthiness and safety of the aircraft. Failure to comply with the provisions of AD/F50/9 could result in significant consequences. Under the Civil Aviation Regulations 1998, non-compliance with ADs can lead to severe penalties. The exact penalties are not detailed in the provided text, but generally, the Civil Aviation Act 1988 outlines potential civil and criminal penalties for violations. Civil penalties can include substantial fines, and in severe cases, criminal charges could lead to imprisonment. The severity of the penalty often depends on the level of negligence and the potential risk posed by the non-compliance. The overarching aim of these provisions is to ensure that all aircraft meet stringent safety standards, thereby protecting passengers, crew, and the general public.