AD/F50/25 - Radio Magnetic Indicators Wiring Change

Overview

The Civil Aviation Regulations 1998, under Part 39 - 105, include the Airworthiness Directive AD/F50/25 which was enacted to address specific safety concerns related to the Fokker F50 (F27 Mk 50) series aeroplanes. This legislative instrument, issued by the Civil Aviation Safety Authority, mandates a wiring change for the Radio Magnetic Indicators (RMIs) on affected aircraft to rectify errors that can exceed permissible limits. The directive applies to F27 Mark 50 aircraft with serial numbers ranging from 20103 to 20108 and 20110 to 20141. Compliance with these requirements is necessary prior to 1 April 1990, as specified by the directive. This measure aims to ensure the safety and airworthiness of the specified aircraft by addressing potential navigational errors due to incorrect wiring.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, which pertains to the Civil Aviation Safety Authority Schedule of Airworthiness Directives, governs the application of AD/F50/25 concerning Fokker F50 (F27 Mk 50) series aeroplanes. This legislative instrument applies to Fokker F50 aircraft with specific serial numbers, namely those ranging from 20103 to 20108 inclusive and 20110 to 20141 inclusive. The directive mandates a modification to the wiring of the Radio Magnetic Indicators (RMIs) to align with Fokker 50 Service Bulletin SBF 50-34-013. This requirement is imperative to rectify errors that can potentially result in navigational discrepancies of up to 5 degrees, thereby ensuring compliance with safety standards and avoiding any exceedance of the permissible limits. This directive is of national scope, as it is issued under the authority of the Commonwealth of Australia and pertains to the safety of civil aviation. Compliance with AD/F50/25 is mandatory for the specified Fokker F50 aircraft and must be achieved before 1 April 1990, as referenced by RLD Airworthiness Directive BLA 89-097. The application of this directive is explicitly limited to the mentioned Fokker F50 aircraft with the specified serial numbers, and no other aircraft are included within its scope. The directive does not extend its application to other models or series of aircraft unless explicitly stated in subordinate instruments. The requirement is clear and direct, with no noted exclusions or exemptions provided within the text of the legislative instrument.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the airworthiness directives for particular types of aircraft. Section AD/F50/25 pertains to the Fokker F50 (F27 Mk 50) Series Aeroplanes and mandates a specific modification to the radio magnetic indicators (RMIs) to correct potential wiring errors. This directive applies to F27 Mark 50 aircraft with serial numbers ranging from 20103 to 20108 and from 20110 to 20141 (Section AD/F50/25). The required modification must be made in accordance with Fokker 50 Service Bulletin SBF 50-34-013. This directive references RLD Airworthiness Directive BLA 89-097 for further context. For the entities governed by this regulation, the primary obligation is to ensure that the specified Fokker F50 aircraft undergo the necessary modifications to their RMI wiring as outlined in the directive. This involves making the changes required by Fokker 50 Service Bulletin SBF 50-34-013 to correct the wiring errors that could result in RMI readings being inaccurate by up to 5 degrees, which exceeds permissible limits. Compliance with this directive must be achieved before 1 April 1990. Failure to comply with the provisions set out in the Civil Aviation Regulations 1998, particularly the requirements in AD/F50/25, can result in serious consequences. Non-compliance with airworthiness directives can lead to a range of civil and criminal penalties. Civil penalties can include fines and other regulatory actions, while criminal penalties might involve imprisonment, depending on the severity of the breach and the specific circumstances. The exact penalties are determined by the courts and can vary based on the particulars of the case.