{"id":"F2006B02972","name":"AD/B737/71 - Brake Wear Limit","slug":"ad-b737-71-brake-wear-limit","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42331,"registerId":"commonwealth-F2006B02972-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B737/71 - Brake Wear Limit","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Boeing 737 Series Aeroplanes\n\n \n\nAD/B737/71 Brake Wear Limit 11/92\n\nApplicability: Model 737 series, equipped with brake part numbers identified in paragraphs (a) through (d) of the Requirement Document.\n\n \n\nRequirement: Action in accordance with the technical requirements of FAA AD 92-15-03 Amdt 39- 8296.\n\n \n\nCompliance: As specified in the Requirement Document with a revised effective date of 15 October 1992 for Australian registered aircraft.\n\n \n\nBackground: An investigation by the FAA of a runway excursion by a transport category aircraft following a rejected takeoff, has revealed that the majority of brake assemblies were near the current maximum wear limit and unable to absorb the required energy. This Directive requires new maximum brake wear limits.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical issue (brake wear limits) on a specific aircraft type. It has not expanded beyond its original purpose."},"complexity_factors":["Very short document (approximately 200 words)","Only 4 substantive paragraphs (Applicability, Requirement, Compliance, Background)","No defined terms section — relies entirely on external FAA document for technical specifications","Single cross-reference to external FAA AD 92-15-03 Amdt 39-8296 (the 'Requirement Document')","No conditional logic, exceptions, or nested provisions","Simple linear structure: what planes, what to do, when to do it, why"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection or replacement of specified brake assemblies on Australian-registered Boeing 737s, imposing stricter wear limits than previously allowed. It responds to a runway-excursion investigation showing brakes that met old limits still lacked stopping energy. Affected operators and maintenance crews must comply with the FAA-referenced technical procedures by 15 October 1992 to close that safety gap."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive adopts the technical requirements of FAA AD 92-15-03 for the identified Boeing 737 brake parts and sets new maximum wear limits. The only change stated is a revised effective date of 15 October 1992 for Australian-registered aircraft; no other scope expansion or narrowing is specified in the supplied text."},"complexity_factors":["Cross-reference to FAA AD 92-15-03 (Requirement) — requires operators to consult and implement an external technical document.","Applicability limited to specific brake part numbers identified in paragraphs (a)–(d) (Applicability) — necessitates parts-level checks against the Requirement Document.","Revised effective date for Australian-registered aircraft (Compliance) — timing adjustment for implementation and fleet scheduling.","Technical nature of measure (Background) — involves measuring brake wear and ensuring energy-absorption capability, creating operational inspection and maintenance tasks.","Regulatory placement in CASA Schedule of Airworthiness Directives (header) — enforces safety-critical compliance through the civil aviation regulator."],"plain_english_summary":"This directive requires operators of Boeing 737 aircraft fitted with certain brake part numbers to follow FAA AD 92-15-03, which sets new maximum brake-wear limits and related inspection/repair actions; an Australian compliance date of 15 October 1992 applies. The change responds to an FAA investigation that found many brake assemblies near the previous wear limit and unable to absorb the required energy."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b737-71-brake-wear-limit","history":"/api/acts/ad-b737-71-brake-wear-limit/history","analysis":"/api/acts/ad-b737-71-brake-wear-limit/analysis","conflicts":"/api/acts/ad-b737-71-brake-wear-limit/conflicts","importantCases":"/api/acts/ad-b737-71-brake-wear-limit/important-cases","documents":"/api/acts/ad-b737-71-brake-wear-limit/documents"}}