{"id":"F2006B02693","name":"AD/B727/17 - Galley Forward Entry and Cargo Door Cutout - Modification","slug":"ad-b727-17-galley-forward-entry-and-cargo-door-cutout-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42009,"registerId":"commonwealth-F2006B02693-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B727/17 - Galley Forward Entry and Cargo Door Cutout - Modification","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 727 Series Aeroplanes\n\n \n\nAD/B727/17 Galley Forward Entry and Cargo Door Cutout - Modification\n\n\n2/66\n\n \n\nApplicability: All models. Document: Boeing SB No. 52-22.\n\nCompliance: Before 12,000 hours total time in service.\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\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied AD sets a clear, limited scope: require a specific modification on all Boeing 727 models to be done per Boeing SB No. 52-22 before 12,000 hours total time in service. The source text contains no indication that the AD's scope was altered from some prior intent or that it expands or narrows an earlier measure."},"complexity_factors":["Short, narrowly framed requirement: single modification with a single compliance threshold (Compliance: Before 12,000 hours total time in service).","Reference to an external technical document (Boeing SB No. 52-22) for procedure increases practical complexity because operators must obtain and follow that bulletin (Document: Boeing SB No. 52-22).","Universal applicability across all Boeing 727 models requires coordination by all operators of the type (Applicability: All models).","Lack of procedural detail or cost estimates in the AD itself forces reliance on the Service Bulletin and on operators' maintenance planning.","Compliance depends on accurate tracking of total time in service, which adds an administrative requirement."],"plain_english_summary":"This AD requires operators of all Boeing 727 models to install a physical modification to the galley forward entry and cargo door cutout, performed per Boeing Service Bulletin No. 52-22, and completed before each aeroplane reaches 12,000 hours total time in service. \n\nIt affects owners/operators and maintenance organisations, who must schedule, fund and carry out the work to remain compliant with the regulator."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-purpose airworthiness directive focused on a specific structural modification for one aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Extremely short document — only 4 substantive lines of regulatory content","No defined terms section — all language is plain technical aviation terminology","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998 citation","Single, unambiguous compliance requirement (before 12,000 hours TIS)","No conditional logic, exceptions, or nested provisions","References only one external technical document (Boeing SB 52-22) for implementation details"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:**\n- Requires owners and operators of **Boeing 727 series aircraft** to carry out a specific structural modification\n- The modification relates to the **galley forward entry door and cargo door cutout areas** — parts of the fuselage (aircraft body) where doors are installed\n\n**Who it affects:**\n- Anyone who owns or operates a Boeing 727 aircraft in Australia (all models are covered)\n\n**Why it matters:**\n- Door cutouts are **structural weak points** in an aircraft's fuselage. Over time, stress and fatigue can cause cracks or failures in these areas, potentially compromising the aircraft's structural integrity and safety.\n- This directive mandates a specific fix (detailed in **Boeing Service Bulletin 52-22**) before the aircraft reaches **12,000 hours of total flight time**.\n\n**The bottom line:** If you fly or maintain a Boeing 727, you must get this door frame modification done before the aircraft clocks up 12,000 hours in the air. It's a hard deadline for a safety-critical structural repair."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-17-galley-forward-entry-and-cargo-door-cutout-modification","history":"/api/acts/ad-b727-17-galley-forward-entry-and-cargo-door-cutout-modification/history","analysis":"/api/acts/ad-b727-17-galley-forward-entry-and-cargo-door-cutout-modification/analysis","conflicts":"/api/acts/ad-b727-17-galley-forward-entry-and-cargo-door-cutout-modification/conflicts","importantCases":"/api/acts/ad-b727-17-galley-forward-entry-and-cargo-door-cutout-modification/important-cases","documents":"/api/acts/ad-b727-17-galley-forward-entry-and-cargo-door-cutout-modification/documents"}}