COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Pratt and Whitney Turbine Engines - PW4000 Series
AD/PW4000/10 Engine Stability Improvements 4/2002
Applicability: Pratt and Whitney PW4000 engines as specified by model in FAA AD 2001-25-11. Requirement: Action in accordance with the requirements of FAA AD 2001-25-11.
Note 1: FAA AD 2001-25-11 supersedes FAA AD 99-17-16 and FAA AD 2001-15-12.
Note 2: CASA AD/PW4000/5 and AD/PW4000/9 Amdt 1 are superseded by this AD.
Compliance: As detailed in the requirement document with a revised effective date of 18 April 2002.
This Airworthiness Directive becomes effective on 18 April 2002.
Background: PW4000 engines are found to be susceptible to instability during take off and climb.
Action mandated by this Directive limits the number of engines with potential instability on each aircraft and introduces revised testing and build standards for engines returned to service.
Eugene Paul Holzapfel
Delegate of the Civil Aviation Safety Authority 5 March 2002
The above AD is notified in the Commonwealth of Australia Gazette on 27 March 2002.
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Overview
The Civil Aviation Regulations 1998 (CAR 1998) were enacted to establish comprehensive regulations for civil aviation safety, aiming to ensure the highest standards of airworthiness and safety in the aviation industry. One specific Airworthiness Directive (AD) issued under this regulation is AD/PW4000/10, which was enacted in 2002 by the Civil Aviation Safety Authority (CASA) to address the safety concerns associated with Pratt and Whitney PW4000 series turbine engines. This directive was introduced in response to identified instabilities during take-off and climb phases of flight, mandating corrective actions to ensure aircraft safety. The directive, which supersedes earlier CASA ADs and FAA ADs, aims to limit the number of potentially unstable engines on each aircraft and implement revised testing and build standards for engines that are returned to service.
Scope and Application
This Airworthiness Directive, issued under the Civil Aviation Regulations 1998, specifically targets Pratt and Whitney PW4000 series turbine engines, identified by their model numbers as listed in FAA AD 2001-25-11. The directive is applicable to these engines installed in aircraft operated within the jurisdiction of the Civil Aviation Safety Authority (CASA), ensuring compliance with safety standards set forth to address instability issues during take-off and climb phases. This AD supersedes previous CASA directives, AD/PW4000/5 and AD/PW4000/9 Amdt 1, and mandates adherence to the requirements of FAA AD 2001-25-11. The directive requires actions to be taken in accordance with the detailed instructions, with a compliance deadline effective from 18 April 2002. This legislative instrument underscores CASA’s commitment to maintaining high safety standards for aviation operations within Australia.
Key Provisions
The Civil Aviation Regulations 1998 (CAR 1998) under Part 39 - 106, specifically Civil Aviation Safety Authority (CASA) Schedule of Airworthiness Directives, details the regulatory requirements for maintaining aircraft and aeronautical products in a safe operating condition. The Airworthiness Directive (AD) in question, AD/PW4000/10, pertains to Pratt and Whitney PW4000 series turbine engines, and it is issued under subregulation 39.1 (1) of CAR 1998. The directive mandates certain actions to address identified safety issues related to engine stability during take-off and climb phases.
The applicability section of AD/PW4000/10 specifies that it applies to Pratt and Whitney PW4000 engines as defined in FAA AD 2001-25-11. The requirement section stipulates that the actions must be taken in accordance with the requirements of FAA AD 2001-25-11, which supersedes previous directives such as FAA AD 99-17-16 and FAA AD 2001-15-12. Furthermore, this AD supersedes CASA AD/PW4000/5 and AD/PW4000/9 Amendment 1. The compliance section outlines that the directive must be adhered to as specified in the requirement document, with a revised effective date of 18 April 2002.
Operators and entities governed by this directive are obligated to ensure that the Pratt and Whitney PW4000 engines meet the specified requirements to mitigate the risk of instability during critical phases of flight. This involves implementing the mandated actions and adhering to the instructions provided in FAA AD 2001-25-11. Non-compliance with this AD could potentially result in unsafe conditions that might endanger the aircraft and its occupants.
The AD also outlines potential consequences for non-compliance, although specific civil or criminal penalties are not detailed in the text. However, under the broader framework of CAR 1998, failure to comply with ADs can lead to serious repercussions, including enforcement actions by CASA. These actions might encompass fines, operational restrictions, or even the grounding of non-compliant aircraft. The severity of penalties can vary based on the nature and extent of the non-compliance, but it is clear that adhering to ADs is critical for maintaining air safety standards.