COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series
AD/TPE 331/47 Third Stage Turbine Stator Assembly 1/94
Applicability: TPE331-1, -2, -3, -5 and -6 series engines fitted with part number 868379-3 third stage turbine stator assemblies, as listed by serial number in Table 3 of Allied Signal Aerospace Service Bulletin TPE331-A72-0906.
Requirement: Inspect the third stage turbine stator assembly in accordance with Allied Signal Aerospace Service Bulletin TPE331-A72-0906.
Compliance: Effective 6 January 1994; as detailed in the Requirement document.
Background: This Directive requires the removal and inspection of certain third stage turbine stator assemblies. The requirement follows advice, certain P/N 868379-3 stators were assembled with the inner seal support sheet metal parts fabricated from an alloy which did not conform to specifications.
Overview
The Civil Aviation Regulations 1998, specifically Part 39 - 106, addresses the safety of aircraft components through the Civil Aviation Safety Authority (CASA) schedule of airworthiness directives. Enacted by the Parliament of Australia, this regulation was introduced to ensure the integrity and safety of aircraft operations by mandating specific maintenance and inspection protocols. One such directive, AD/TPE 331/47, pertains to the AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series, focusing on the inspection of the third stage turbine stator assembly. This requirement arose from identified issues with the assembly of certain stator components, necessitating a thorough inspection to prevent potential failures that could compromise flight safety. The policy objective of this directive is to maintain the highest safety standards in civil aviation by ensuring that aircraft components meet stringent specifications and operational criteria.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 106, pertains to the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives, which includes directives concerning the airworthiness of specific aircraft engines. This particular legislation applies to engines of the AlliedSignal (Garrett/AiResearch) TPE 331 Series, more precisely the TPE331-1, -2, -3, -5, and -6 series engines that are fitted with part number 868379-3 third stage turbine stator assemblies as identified by their serial numbers in Table 3 of Allied Signal Aerospace Service Bulletin TPE331-A72-0906. The directive mandates the inspection of these third stage turbine stator assemblies to ensure they meet specified safety standards. The requirement for inspection stems from concerns that certain stators were assembled with inner seal support sheet metal parts made from an alloy that did not meet the necessary specifications. The directive applies to the Commonwealth of Australia, regulating conduct and maintenance practices for the identified engines within its jurisdiction. The legislation extends its reach through subordinate instruments, which detail the specific inspection procedures as outlined in the Allied Signal Aerospace Service Bulletin TPE331-A72-0906, and it came into effect on 6 January 1994.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39, Section 106, provides detailed requirements for the airworthiness directives concerning the AlliedSignal (Garrett/AiResearch) Turbine Engines of the TPE 331 series, particularly focusing on the third stage turbine stator assembly. Section AD/TPE 331/47 mandates that the third stage turbine stator assemblies, identified by specific serial numbers and part numbers (868379-3) listed in Table 3 of Allied Signal Aerospace Service Bulletin TPE331-A72-0906, must be inspected. This inspection must adhere to the guidelines provided in the aforementioned bulletin. The directive applies to TPE331-1, -2, -3, -5, and -6 series engines equipped with the specified third stage turbine stator assemblies.
The Civil Aviation Regulations impose obligations on the parties or entities governed by this Act, such as aircraft owners, operators, and maintenance service providers, to ensure compliance with the airworthiness directives. This includes conducting thorough inspections of the specified turbine stator assemblies as per the Allied Signal Aerospace Service Bulletin TPE331-A72-0906. Non-compliance with these directives can result in significant safety risks and may lead to the grounding of affected aircraft until the required inspections and any necessary repairs are completed. The effective date for compliance with these requirements is 6 January 1994, and it is essential that all stakeholders follow the compliance procedures outlined in the requirement document.
The legislation also includes provisions for offences, penalties, and consequences for non-compliance. While the specific penalties are not detailed in the excerpt provided, it is understood that breaches of airworthiness directives can result in substantial penalties under the Civil Aviation Act 1988. These penalties may include fines, operational restrictions, or even the revocation of an aircraft's airworthiness certificate. Given the critical nature of ensuring aircraft safety, the Civil Aviation Safety Authority takes these directives very seriously, and non-compliance can have severe repercussions for both individuals and companies involved in the operation and maintenance of aircraft.