COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
AlliedSignal (Lycoming) Turbine Engines - ALF502 and LF507 Series
AD/ALF/8
Amdt 1
Introduction of Turbine Spacers P/N 2-121-071-31/35 4/88
Applicability: ALF 502R series engines prior to S/N LF05424. Requirement: Install improved turbine spacers P/N 2-121-071-31/35.
Compliance: Unless already accomplished in accordance with the schedule and procedure detailed in Lycoming SB ALF 502R-72-0163 dated 8 June 1987 or a schedule acceptable to the Secretary.
Note 1: FAA AD 87-15-03 Amdt 39-5660 refers.
Note 2: Installation of other P/N improved spacers, for these engines, which are listed in Lycoming S.B. ALF 502-72-0002 Rev 17 (or later) and whose cyclic lives are greater than those of P/Ns 2-121-071-31/35, renders compliance with this Directive unnecessary - AD/ALF/2 Amdt 3 refers.
Background: This Directive is amended to note and reference LYC SB ALF 502-72-0002 Rev 17, (and AD/ALF/2 Amdt 3) which lists other acceptable P/N spacers which when fitted makes compliance with this Directive unnecessary.
Overview
The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), were enacted to provide a comprehensive legal framework governing civil aviation safety in Australia, aiming to address issues and gaps in the regulation of aircraft operations, maintenance, and airworthiness standards. One of the key components of these regulations is the issuance of Airworthiness Directives (ADs) to ensure the safe operation of aircraft by mandating specific actions or conditions for aircraft, engines, and propellers. The AD/ALF/8 Amendment 1, introduced to enhance the safety of AlliedSignal (Lycoming) Turbine Engines - ALF502 and LF507 Series, exemplifies this regulatory approach. The policy objective behind such directives is to mitigate potential safety risks by requiring the installation of improved components, such as the turbine spacers P/N 2-121-071-31/35, to address identified vulnerabilities and ensure compliance with safety standards.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 106 concerning the Civil Aviation Safety Authority Schedule of Airworthiness Directives, applies to the AlliedSignal (Lycoming) Turbine Engines of the ALF502 and LF507 Series. This regulation mandates the installation of improved turbine spacers P/N 2-121-071-31/35 for ALF 502R series engines prior to serial number LF05424. This directive ensures compliance unless the installation has already been achieved in accordance with the schedule and procedure outlined in Lycoming Service Bulletin ALF 502R-72-0163 dated 8 June 1987, or an alternative schedule acceptable to the Secretary. Notably, the Federal Aviation Administration (FAA) Advisory Directive 87-15-03 Amendment 39-5660 is referenced, and it is noted that the installation of other specified improved spacers, as listed in Lycoming Service Bulletin ALF 502-72-0002 Rev 17 (or later) and with cyclic lives exceeding those of P/Ns 2-121-071-31/35, negates the need for compliance with this specific directive, as referenced in AD/ALF/2 Amendment 3. The scope of this regulation is geographically confined to the Commonwealth of Australia, affecting the aviation industry and entities involved in the maintenance and operation of the specified turbine engines.
Key Provisions
The main operative sections of this Civil Aviation Regulations 1998 (CIV) Regulation require the installation of improved turbine spacers P/N 2-121-071-31/35 for ALF 502R series engines prior to serial number LF05424, as detailed in Section 1 of the Airworthiness Directive (AD). This requirement is outlined explicitly in the Regulation (Section 4/88) and applies to the aforementioned engines unless they have already been modified according to the schedule and procedure in Lycoming Service Bulletin (SB) ALF 502R-72-0163 dated 8 June 1987, or an alternative schedule approved by the Secretary. Furthermore, the Regulation references the Federal Aviation Administration (FAA) AD 87-15-03 Amdt 39-5660, providing a link to other regulatory frameworks.
The obligations imposed by the AD on the relevant parties include ensuring that the specified turbine spacers are installed in a timely manner, in accordance with the provided schedule and procedures. It is crucial that these modifications are carried out by authorised personnel, and the installation must adhere to the standards set out in Lycoming SB ALF 502-72-0002 Rev 17 (or later). This directive also makes it clear that if other improved spacers, with longer cyclic lives than those specified in P/N 2-121-071-31/35, are installed, then compliance with this directive becomes unnecessary.
Failure to comply with the provisions of this AD could result in serious safety implications and potential legal consequences. The AD does not explicitly state penalties, but non-compliance with Civil Aviation Regulations could lead to enforcement actions by the Civil Aviation Safety Authority (CASA). Such actions could include fines, legal proceedings, and potential grounding of the aircraft until the required modifications are made. The severity of the penalties would depend on the specific circumstances of the non-compliance and the impact on aviation safety.