{"id":"F2006B02792","name":"AD/B727/88 Amdt 2 - Main Cargo Door Cam Support Fittings","slug":"ad-b727-88-amdt-2-main-cargo-door-cam-support-fittings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42134,"registerId":"commonwealth-F2006B02792-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B727/88 Amdt 2 - Main Cargo Door Cam Support Fittings","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/B727/88\n\nAmdt 2\n\n\nMain Cargo Door Cam Support Fittings 7/84\n\n \n\nApplicability: All 727-100 series aircraft listed in the requirement document.\n\n \n\nDocument: Boeing Alert Service Bulletin 727-52A124. Revision 6 including Addendum.\n\n \n\nNote: FAA AD 80-08-10 also refers.\n\n \n\nCompliance: As detailed in requirement document.\n\n \n\nBackground: Cracking of these fittings has been found in service and has been attributed to cabin pressurisation fatigue. Alert SB 727-52A124 has been revised to incorporate all pertinent inspection requirements into applicable sections of the Service Bulletin.\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":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive focused on a specific mechanical component on a specific aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (approximately 200 words)","Only 1 defined applicability criterion (727-100 series aircraft)","Single cross-reference to external technical document (Boeing Service Bulletin)","No conditional logic or nested exceptions within the directive itself","Compliance delegated entirely to external technical document","Minimal legislative drafting — essentially a pointer to engineering requirements"],"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:**\nIt requires owners and operators of certain Boeing 727-100 series aircraft to inspect and potentially repair or replace **cam support fittings** on the main cargo door. These are mechanical components that help secure the cargo door during flight.\n\n**Why it matters:**\nCracks have been discovered in these fittings on aircraft in actual service. The cracking is caused by **fatigue** (repeated stress) from the cabin being pressurised and depressurised during flights. If these fittings fail, the cargo door could potentially open mid-flight, leading to rapid decompression and possible loss of the aircraft.\n\n**Who must comply:**\nAnyone operating a Boeing 727-100 series aircraft listed in Boeing's Alert Service Bulletin 727-52A124 (Revision 6 with Addendum).\n\n**What must be done:**\nOperators must follow the specific inspection and repair instructions detailed in that Boeing service bulletin. The directive references a corresponding US Federal Aviation Administration (FAA) order (AD 80-08-10) for additional context."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"The amendment revises the directive to incorporate all pertinent inspection requirements into the applicable sections of the Boeing Alert Service Bulletin (Background). Mechanically, the AD now points operators to the updated Service Bulletin Revision 6 (including Addendum) as the controlling document for inspections and corrective actions (Document), broadening the AD’s operational scope to require compliance with the revised inspection content."},"complexity_factors":["Dependence on external technical document: Boeing Alert Service Bulletin 727-52A124 Revision 6 including Addendum (Document)","Cross-reference to another regulator’s AD (FAA AD 80-08-10) requiring reconciliation of guidance (Note)","Compliance obligation delegates procedural detail to the requirement document rather than stating actions in the AD itself (Compliance)","Technical inspection and fatigue-cracking issues require specialised maintenance skills and possible parts/repairs (Background)","Applicability limited to a subset of aircraft but requires operators to identify affected airframes and manage scheduling (Applicability)","Potential operational impacts (aircraft downtime) and coordination between operators and maintenance organisations (Compliance)"],"plain_english_summary":"This AD requires operators of certain Boeing 727-100 aircraft to perform inspections and any corrective work specified in Boeing Alert Service Bulletin 727-52A124 Rev 6 (including Addendum) to detect and fix fatigue cracking in main cargo door cam support fittings caused by cabin pressurisation. It affects aircraft owners/operators (who pay inspection/repair costs), is enforced by CASA, and shifts technical detail and compliance burden onto operators and the referenced manufacturer document."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-88-amdt-2-main-cargo-door-cam-support-fittings","history":"/api/acts/ad-b727-88-amdt-2-main-cargo-door-cam-support-fittings/history","analysis":"/api/acts/ad-b727-88-amdt-2-main-cargo-door-cam-support-fittings/analysis","conflicts":"/api/acts/ad-b727-88-amdt-2-main-cargo-door-cam-support-fittings/conflicts","importantCases":"/api/acts/ad-b727-88-amdt-2-main-cargo-door-cam-support-fittings/important-cases","documents":"/api/acts/ad-b727-88-amdt-2-main-cargo-door-cam-support-fittings/documents"}}