{"id":"F2006B02952","name":"AD/B737/52 Amdt 2 - Corrosion Prevention and Control Program","slug":"ad-b737-52-amdt-2-corrosion-prevention-and-control-program","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42294,"registerId":"commonwealth-F2006B02952-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B737/52 Amdt 2 - Corrosion Prevention and Control Program","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBoeing 737 Series Aeroplanes\n\nAD/B737/52\n\nAmdt 2\n\n  \nCorrosion Prevention and Control Program 1/94\n\nDM\n\nApplicability: All Model 737 series aircraft; unless the system of maintenance includes an alternative method of compliance approved by the Authority.\n\nRequirement: Action in accordance with the technical requirements of FAA AD 90-25-01 Amdt 39- 6789.\n\nCorrosion classified as level 1 need not be reported. Level 2 corrosion may be consolidated with a sixty day report of corrective action, and submitted to the Authority District (Airport) Office under cover of a single MDR. Level 3 corrosion shall be reported by MDR.\n\nNote 1: Boeing document No. D6-38528 Rev C is associated with FAA AD 90-25-01.\n\nNote 2: Boeing 737-300/400/500 Maintenance Planning Data Document No D6- 38278 Section 10 is an approved alternative method of compliance.\n\nNote 3: References made in the FAA AD text to the following: Administrator,\n\nFAA,\n\nFAA Principal Inspector (PI), or\n\nManager Seattle Certification Office (ACO),\n\nshall be read as Civil Aviation Authority District (Airport) Office.\n\nCompliance: As specified in the Requirement Document.\n\nThis Amendment is effective from 8 December 1993.\n\nBackground: The Country of Origin Airworthiness Authority requires implementation of a corrosion prevention and control program to prevent the degradation of the structural capabilities of the affected aircraft.\n\nAmendment 1 was raised to specify the reporting requirements when corrosion is found as a result of the CPCP.\n\nAmendment 2 is issued to introduce a method of compliance other than the Country of Origin AD, to address current “in production” aircraft.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1780},"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":true,"description":"Amendment 2 expanded the directive's scope beyond the existing fleet to include aircraft currently 'in production' by introducing an approved alternative method of compliance (Boeing Maintenance Planning Data Document D6-38278 Section 10 for 737-300/400/500 models). The original directive and Amendment 1 focused solely on compliance with the FAA corrosion program for operational aircraft."},"complexity_factors":["Incorporates external technical standards by reference (FAA AD 90-25-01 and Boeing documents D6-38528 and D6-38278)","Establishes tiered reporting obligations across three defined corrosion severity levels with different timeframes","Requires cross-reading between US and Australian regulatory frameworks (substituting CASA District Offices for FAA Administrator/Inspectors)","Contains conditional applicability clause exempting operators with pre-existing approved alternative maintenance systems"],"plain_english_summary":"This rule requires Australian operators of Boeing 737s to run a structured corrosion-prevention and management program based on FAA AD 90-25-01, ensuring inspections, classification of findings, and escalation of serious defects. It affects all 737 series unless an operator already follows an approved alternative maintenance system.\n\nFor certain 737-300/-400/-500 models, approved Boeing maintenance planning documents may be used instead. The aim is to detect and report structural corrosion early to protect airframe integrity."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-52-amdt-2-corrosion-prevention-and-control-program","history":"/api/acts/ad-b737-52-amdt-2-corrosion-prevention-and-control-program/history","analysis":"/api/acts/ad-b737-52-amdt-2-corrosion-prevention-and-control-program/analysis","conflicts":"/api/acts/ad-b737-52-amdt-2-corrosion-prevention-and-control-program/conflicts","importantCases":"/api/acts/ad-b737-52-amdt-2-corrosion-prevention-and-control-program/important-cases","documents":"/api/acts/ad-b737-52-amdt-2-corrosion-prevention-and-control-program/documents"}}