{"id":"F2006B08523","name":"AD/CFM56/19 - Torque Fittings of PS3 Pressure Line","slug":"ad-cfm56-19-torque-fittings-of-ps3-pressure-line","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51270,"registerId":"commonwealth-F2006B08523-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor 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.\n\nCFM International Turbine Engines \\- CFM56 Series","sortOrder":0},{"sectionNumber":"AD/CFM56/19 Torque Fittings of PS3 Press","sectionType":"part","heading":"AD/CFM56/19 Torque Fittings of PS3 Pressure Line 5/2002","content":"# AD/CFM56/19 Torque Fittings of PS3 Pressure Line 5/2002\n\nDM\n\nApplicability: 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.\n\nRequirement: 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.\n\nThis Airworthiness Directive becomes effective on 10 April 2002.\n\nBackground: 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.\n\n![Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 26 March 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 10 April 2002.","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The Directive adopts the FAA AD’s technical requirements without adding broader obligations. Applicability is confined to the listed CFM56‑7B serial‑number ranges and the action required is to follow FAA AD 2001‑02‑12; no additional or expanded measures are introduced in this instrument."},"complexity_factors":["External cross‑reference to FAA AD 2001‑02‑12 (dependency on foreign AD for technical detail)","Safety‑critical mechanical action (torque inspection/rectification of PS3 pressure‑line fittings)","Specific serial‑number applicability and exclusions (detailed applicability reduces universality)","Short compliance timeframe (25 days from effective date)","Operational/maintenance scheduling and potential aircraft downtime for corrective work","Regulatory enforcement under CAR 1998 subregulation 39.1(1) (formal legal mandate)"],"plain_english_summary":"This Airworthiness Directive requires operators of specified CFM56‑7B turbofan engines to carry out the torque checks and corrective actions for the PS3 pressure‑line fittings as set out in FAA AD 2001‑02‑12. It applies to engines in defined serial‑number ranges and must be completed within 25 days of the directive’s 10 April 2002 effective date.\n\nMechanically, the AD imports the FAA instructions; operators bear inspection and repair costs, must schedule prompt maintenance to avoid possible engine power loss, and comply under CASA’s regulatory authority."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific unsafe condition (incorrectly torqued PS3 pressure line fittings) on specific CFM56-7B engines. It does not expand beyond this original safety purpose."},"complexity_factors":["Very short document (under 300 words)","Only 3 substantive sections: Applicability, Requirement, and Compliance","Single technical requirement: adopt FAA AD 2001-02-12","Simple applicability test based on engine serial numbers","No defined terms section, no cross-references to other legislation beyond the FAA AD","Clear, fixed compliance deadline (25 days)","No conditional logic, exceptions, or nested provisions"],"plain_english_summary":"This AD requires operators of Boeing 737s with certain CFM56-7B engines to inspect and correct the torque on PS3 pressure-line fittings within 25 days (by 5 May 2002), per FAA AD 2001-02-12. Engines with specified serial numbers are excluded.\n\nIt adopts the FAA directive to prevent pneumatic leaks that could cause engine power loss, ensuring Australian-registered aircraft meet the same safety standard."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cfm56-19-torque-fittings-of-ps3-pressure-line","history":"/api/acts/ad-cfm56-19-torque-fittings-of-ps3-pressure-line/history","analysis":"/api/acts/ad-cfm56-19-torque-fittings-of-ps3-pressure-line/analysis","conflicts":"/api/acts/ad-cfm56-19-torque-fittings-of-ps3-pressure-line/conflicts","importantCases":"/api/acts/ad-cfm56-19-torque-fittings-of-ps3-pressure-line/important-cases","documents":"/api/acts/ad-cfm56-19-torque-fittings-of-ps3-pressure-line/documents"}}