AD/F28/53 - Cargo Door Hinges

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, encompass a comprehensive regulatory framework aimed at ensuring the safety of civil aviation within the country. Within this extensive set of regulations, Part 39 addresses various aspects of aircraft maintenance and airworthiness, including the issuance of specific directives to mitigate identified safety risks. One such directive, AD/F28/53, pertains to Fokker F28 Series aeroplanes and mandates the inspection and maintenance of cargo door hinges to address the problem of intergranular corrosion and cracking, which has been reported in these components. The directive was introduced in response to reports indicating significant structural issues with the cargo door hinges, including instances where nearly half of the lugs were found to be cracked. The objective is to ensure ongoing airworthiness and safety by requiring the timely inspection and necessary repairs to prevent potential in-flight failures.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 – 105, applies to all Fokker F28 Series Aeroplanes and mandates compliance with Airworthiness Directives issued by the Civil Aviation Safety Authority. This particular directive, AD/F28/53, targets the cargo door hinges of all models within the Fokker F28 Series, requiring the removal and inspection of hinges to prevent potential structural failures due to corrosion and cracking. The directive applies nationally across Australia, overseen by the Commonwealth, and necessitates the outlined maintenance procedures to be carried out within a specified timeframe to ensure the continued airworthiness of the aircraft. The directive does not explicitly state exclusions or exemptions, implying that all Fokker F28 Series aeroplanes must adhere to the stipulated requirements. Compliance is mandatory unless completed within six months or 50 hours of time in service after the directive's issuance date of 9 June 1987. The application of this directive may be extended or further defined through subordinate instruments issued by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, outlines detailed maintenance and inspection requirements for Fokker F28 Series aeroplanes. Section AD/F28/53 focuses on the cargo door hinges and mandates specific actions to address issues of intergranular corrosion and cracking. The directive applies universally to all models of the Fokker F28 aeroplanes, as indicated in the applicability clause. The directive requires operators to remove the forward, centre, and aft cargo door hinges and thoroughly inspect the hinge lugs for any signs of corrosion or cracking. These inspections and subsequent actions must be carried out within six months or 50 hours of time in service, whichever comes first, following 9 June 1987. The obligations imposed by this directive are clear and require operators to ensure that the cargo door hinges are meticulously examined and maintained. Operators must disassemble the hinge assemblies and remove the hinge wires to properly inspect the hinge lugs. Any identified corrosion or cracking must be addressed promptly to prevent potential safety hazards. The directive does not specify the exact procedure for repairs or replacements but implies that any defective parts must be rectified to maintain the structural integrity of the cargo door hinges. Failure to comply with the requirements outlined in this directive can result in severe consequences. Although the specific penalties are not detailed in the directive, non-compliance with CASA airworthiness directives generally attracts stringent enforcement actions. Such actions can include fines, suspension or revocation of the aircraft's operating certificate, and potential criminal charges. The severity of the penalties reflects the critical importance of adhering to these safety directives to ensure the ongoing airworthiness and safety of the Fokker F28 aeroplanes. Ensuring timely and thorough inspections and maintenance of the cargo door hinges is essential to mitigate risks and comply with regulatory standards.