AD/F50/3 Amdt 1 - Wing Structure - Skin Splice WS 7915

Overview

The Civil Aviation Regulations 1998, specifically within Part 39 - 105, incorporates the Civil Aviation Safety Authority’s Schedule of Airworthiness Directives, aiming to ensure the safety and airworthiness of aircraft in Australia. One such directive is AD/F50/3, which pertains to Fokker F50 (F27 Mk 50) series aeroplanes, addressing a specific structural issue identified with the wing skin splice at WS 7915. This directive was enacted to address the problem identified with the strength of the skin splice at WS 7900 due to faulty heat treatment, which posed a risk to the structural integrity of the aircraft. The objective of this directive is to ensure compliance with safety standards by restricting the maximum operating speed and requiring modifications to the affected aircraft to maintain their airworthiness. The Australian Parliament, through the Civil Aviation Regulations 1998, established these directives to safeguard the aviation industry, ensuring that aircraft meet specific safety standards. The directive is enforced by the Civil Aviation Safety Authority, which mandates that all affected Fokker F50 series aircraft must adhere to the specified modifications and speed restrictions to ensure continued safe operation. This legislative action is aimed at mitigating risks associated with structural failures, thereby enhancing overall aviation safety within Australia.

Scope and Application

The Civil Aviation Regulations 1998, under Part 39 - 105, applies to the Fokker F50 (F27 Mk 50) series aeroplanes with serial numbers between F27-050 S/Nos 20103 to 20108 and 20110 to 20127. This legislation mandates specific requirements to ensure the airworthiness of these aircraft, primarily focusing on the wing structure's skin splice at WS 7915. The regulation restricts the maximum operating limit speed (Vmo) as per Fokker's telefax dated 29 June 1988 until modifications are implemented as per Fokker Service Bulletin F50/57-001. Compliance with this directive must be achieved before further flight after 1 July 1988 and no later than 31 December 1989. This directive applies nationally and is enforced by the Civil Aviation Safety Authority, ensuring that all relevant operators and aircraft within the specified serial numbers adhere to these safety standards. The scope of this legislation is targeted specifically at the Fokker F50 series aeroplanes identified by their serial numbers, ensuring that these aircraft maintain their airworthiness by adhering to the specified modifications and restrictions. The legislation does not explicitly state any exclusions or exemptions, but it is implicitly understood that non-compliance could result in the grounding of affected aircraft. The application of this regulation is overseen by the Civil Aviation Safety Authority, and it extends to any entity operating these aircraft within Australian jurisdiction. This includes both domestic and international flights as long as the aircraft are registered in Australia or are operated by Australian entities.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, outlines the Civil Aviation Safety Authority's (CASA) schedule of airworthiness directives for various aircraft types, including Fokker F50 (F27 Mk 50) Series Aeroplanes. In this context, AD/F50/3 Amendment 1 pertains to the wing structure skin splice WS 7915. The directive applies to Fokker F50 aircraft with serial numbers between 20103 and 20108, and 20110 to 20127 (section 4/89). The primary requirement (section 1) is to restrict the maximum operating speed (Vmo) in line with Fokker's telefax dated 29 June 1988 until modifications are carried out as per Fokker S.B. F50/57-001. This speed restriction can be implemented by placing placards near the Airspeed Indicators (ASIs) and updating the Flight Manual to include Fokker's Temporary Change (section 1 note). Compliance with these directives (section 2) mandates that these measures be adhered to before any further flight after 1 July 1988, and the modifications must be completed before 31 December 1989 (section 2). Entities governed by these regulations, such as airlines and aircraft operators, must ensure that their Fokker F50 aircraft comply with the specified airworthiness directives. This includes implementing the speed restrictions and making the necessary modifications to the wing structure skin splice WS 7915 in accordance with the provided guidelines. The regulations impose an obligation on these entities to maintain their aircraft in an airworthy condition, which includes adhering to the directives issued by CASA. Failure to comply with these directives could result in the aircraft being deemed unairworthy, which could lead to grounding and potential legal consequences. The legislation also outlines the consequences for non-compliance with these airworthiness directives. Breaches of the Civil Aviation Regulations 1998 can lead to civil or criminal penalties. For civil aviation offences, the penalties can include fines up to a substantial amount, as stipulated by the relevant sections of the Act. In more severe cases, criminal penalties may apply, including imprisonment. The specific penalties are not detailed within the provided text, but they are outlined in other parts of the Civil Aviation Regulations 1998 and related legislation. Ensuring compliance with these directives is crucial to avoid the potential legal and financial repercussions associated with non-compliance.