COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Propellers - Variable Pitch - Dowty Rotol
AD/PR/28
Amdt 1
Hub Switches 10/89
Applicability: Any Dowty Rotol Propeller P/N R193/4-30-4/xxx with the following S/N installed on Fokker F-27 aircraft.
DRG 225/63, - 265/64, - 23/68, - 121/70, - 59/76, - 21/77, - 65/77, - 76/77, - 8/78, - 44/78, - 120/78, - 121/78, - 15/79, - 417/80 - 1127/80 - 3954/86.
Dowty Rotol Propeller P/N R184/x-xx-x/xxx S/No DRG 118/65 installed on Gulfstream 1 G 159 aircraft.
Requirement: Inspect hub switches for correct fitment, location and correct brush installation within the hub switch block. Refer Dowty Rotol Maintenance Manual 876 CM 61-2-4 Page 302/2.
Note 1: Use switch P/N 601023026 in position 1 and 3 and switch P/N 601023027 in
position 2.
Note 2: Netherlands AD 89-19 issue 2 refers.
Compliance: Unless already accomplished at next inspection for issue of a Maintenance release or by 30 October 1989 whichever occurs first.
Background: Due to the possibility that the hub switches may have been incorrectly installed a one time inspection is required. Amendment 1 corrects a serial no. change.
Overview
The Civil Aviation Regulations 1998, specifically Part 39 – 107, includes an Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) to address safety concerns regarding the installation and fitment of hub switches on certain Dowty Rotol propellers. This legislation was enacted to ensure the airworthiness of aircraft by mandating a thorough inspection of hub switches on specified propellers, namely those with particular part numbers and serial numbers installed on Fokker F-27 and Gulfstream 1 G 159 aircraft. The AD aims to rectify any potential issues that might arise from incorrect installation of these critical components, thereby enhancing flight safety and compliance with regulatory standards. The compliance requirement necessitates an inspection and necessary corrective actions to be completed by the next scheduled inspection or by a specified deadline to ensure adherence to safety protocols.
This legislative instrument was developed under the authority of the Civil Aviation Act 1988 and related regulations, reflecting the policy objective of maintaining high safety standards within the Australian aviation industry. The directive underscores the importance of precise component installation and the continuous oversight necessary to uphold these standards, ensuring that aircraft remain airworthy and safe for operation.
Scope and Application
The Civil Aviation Regulations 1998, as amended, under the authority of the Civil Aviation Act 1988, govern the safe operation and airworthiness of aircraft within Australian airspace. Specifically, Part 39 - 107, Civil Aviation Safety Authority Schedule of Airworthiness Directives, applies to the maintenance and safety compliance of aircraft components, such as propellers. The regulation AD/PR/28 Amendment 1 pertains to the inspection of hub switches on certain Dowty Rotol propellers installed on Fokker F-27 and Gulfstream 1 G 159 aircraft. This directive is applicable to any Dowty Rotol Propeller P/N R193/4-30-4/xxx and R184/x-xx-x/xxx with specific serial numbers as listed in the regulation, installed on the mentioned aircraft types. The geographic reach of these regulations is national, as they apply across Australia to ensure the safety of aircraft operating within its airspace. There are no stated exclusions or exemptions in this directive, and it is mandatory for compliance with the specified requirements. The regulation extends its application through the issuance of Airworthiness Directives and requires adherence to the Dowty Rotol Maintenance Manual for the correct procedures during inspection. Compliance must be achieved by the next inspection or by the specified deadline, whichever comes first.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 – 107, mandate the application of Airworthiness Directives (AD) related to the maintenance and operation of aircraft. Under this regulation, AD/PR/28 Amendment 1, which concerns the hub switches of Dowty Rotol Propellers, requires inspection of certain propellers installed on Fokker F-27 and Gulfstream 1 G 159 aircraft. Section (1) identifies the specific propellers and serial numbers subject to this directive. The requirement, detailed in section (2), is to inspect the hub switches for correct fitment, location, and proper brush installation within the hub switch block, as per the Dowty Rotol Maintenance Manual 876 CM 61-2-4 Page 302/2. Noteworthy is the instruction to use specific switch part numbers (601023026 for positions 1 and 3, and 601023027 for position 2) during this inspection, as per the directive.
Entities and parties governed by these regulations must comply with the outlined inspection requirements within the specified timeframe. The compliance clause, section (3), stipulates that this inspection must be conducted at the next inspection for the issuance of a maintenance release or by 30 October 1989, whichever comes first. This requirement ensures that any discrepancies in the installation of the hub switches are identified and rectified to maintain the safety and airworthiness of the affected aircraft.
The Civil Aviation Regulations impose strict obligations on operators and maintenance personnel to adhere to these Airworthiness Directives. Failure to comply with the specified inspection requirements can result in serious safety implications and potential penalties. Although the specific offences, penalties, or consequences for non-compliance are not detailed within this particular directive, general provisions under the Civil Aviation Act 1988 may apply. These could include administrative penalties, fines, or more severe consequences in cases where non-compliance leads to accidents or incidents affecting aviation safety.