AD/CFM56/19 - Torque Fittings of PS3 Pressure Line

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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.

 

CFM International Turbine Engines - CFM56 Series

 

AD/CFM56/19 Torque Fittings of PS3 Pressure Line 5/2002

DM

 

Applicability:  CFM International (CFMI) Model CFM56-7B Turbofan Engines except those with Serial Numbers DAC 876-747 and higher, and SAC 888-XXX and 889-XXX: 166- 168, 172-173, 175-178, 180 and higher. These engines are installed on, but not limited to, Boeing 737-8BK and 737-7Q8 aeroplanes.

 

Requirement: Carry out the technical requirements of FAA AD 2001-02-12 amendment 39-12097. Compliance:               Within 25 days after the effective date of this Airworthiness Directive.

This Airworthiness Directive becomes effective on 10 April 2002.

 

Background: FAA AD 2001-02-12 indicates that affected engines may have PS3 pressure line fittings that are incorrectly torque loaded. This Directive therefore requires actions contained in the FAA AD to be followed to ensure the fittings on the PS3 pressure line are correctly torque loaded to prevent the possibility of engine power loss.


 

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 26 March 2002

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


The above AD is notified in the Commonwealth of Australia Gazette on 10 April 2002.

 

 


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Overview

The Civil Aviation Regulations 1998, specifically under Part 39-106, address the critical issue of ensuring the safety and airworthiness of aircraft and aeronautical products. Enacted by the Australian Parliament, these regulations are intended to rectify deficiencies and hazards that could compromise the safety of aviation. The particular Airworthiness Directive AD/CFM56/19, issued on 26 March 2002 and effective from 10 April 2002, targets the CFM International (CFMI) Model CFM56-7B Turbofan Engines to mitigate the risk of incorrect torque loading on PS3 pressure line fittings, which could potentially lead to engine power loss. This directive mandates adherence to the technical requirements set out in FAA AD 2001-02-12 amendment 39-12097, ensuring that specified engines are correctly maintained to uphold stringent safety standards in civil aviation.

Scope and Application

This Airworthiness Directive applies specifically to the CFM International (CFMI) Model CFM56-7B Turbofan Engines, excluding those with certain serial numbers, and which are installed in Boeing 737-8BK and 737-7Q8 aeroplanes. The directive mandates adherence to the technical requirements outlined in FAA AD 2001-02-12, amendment 39-12097, to address potential issues with incorrectly torque-loaded PS3 pressure line fittings. This action is deemed necessary to mitigate the risk of engine power loss. Compliance with the directive is required within 25 days of its effective date, which is 10 April 2002. This directive is issued under the authority of the Civil Aviation Safety Authority (CASA) and is applicable throughout the Commonwealth of Australia, ensuring that the specified aircraft and engines conform to the mandated safety standards.

Key Provisions

The Airworthiness Directive (AD/CFM56/19) applies specifically to CFM International (CFMI) Model CFM56-7B Turbofan Engines, excluding those with certain serial numbers (DAC 876-747 and higher, and SAC 888-XXX and 889-XXX: 166- 168, 172-173, 175-178, 180 and higher). These engines are typically installed on Boeing 737-8BK and 737-7Q8 aeroplanes, among others. The AD requires compliance with the technical requirements set out in FAA AD 2001-02-12, amendment 39-12097, to address issues with the torque loading of PS3 pressure line fittings, which, if incorrectly loaded, could lead to engine power loss. The directive mandates that the specified actions must be carried out within 25 days from the effective date, which is 10 April 2002. The obligations imposed by this Airworthiness Directive are clear and specific. Aircraft operators and maintenance providers must ensure that the identified engines are inspected and, if necessary, the torque fittings of the PS3 pressure line are adjusted according to the technical requirements outlined in the FAA AD. This involves following the specific instructions provided in FAA AD 2001-02-12, amendment 39-12097, to rectify any issues with the torque loading. The directive ensures that the aircraft remain airworthy by preventing potential engine power loss due to incorrectly torqued fittings. Compliance with the directive is mandatory, and failure to adhere to the specified timeframes and procedures could result in serious safety implications. Failure to comply with the requirements of the Airworthiness Directive can lead to significant consequences. Firstly, non-compliance could result in the aircraft being grounded, which would prevent the operator from legally flying the aircraft until the required actions have been taken. In addition to this, the AD is issued under the authority of the Civil Aviation Safety Authority (CASA), and any breach of its terms could lead to regulatory action against the operator. The specific penalties for non-compliance are not detailed in the AD itself but could include fines, enforcement actions, or even legal proceedings if the non-compliance results in an aviation incident. The seriousness of the potential consequences underscores the importance of strict adherence to the directive.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.