{"id":"F2006B11334","name":"AD/MSR/5 Amdt 1 - Horizontal Stabiliser Front Attachment Brackets - Inspection and Modification","slug":"ad-msr-5-amdt-1-horizontal-stabiliser-front-attachment-brackets-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57211,"registerId":"commonwealth-F2006B11334-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/MSR/5 Amdt 1 - Horizontal Stabiliser Front Attachment Brackets - Inspection and 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)  Aerospatiale Rallye Series Aeroplanes\n\n \n\nAD/MSR/5\n\nAmdt 1\n\n\nHorizontal Stabiliser Front Attachment Brackets - Inspection and Modification\n\n\n8/62\n\n \n\nApplicability: Models MS880, 881, 885 and 886 with S/Nos. 1 to 395.\n\n \n\nRequirement: Part 1 - Inspect the horizontal stabilizer forward attachment brackets as detailed in Rallye Service Bulletin No. 12/1.\n\n \n\nPart 2 - Replace the light alloy attachment brackets with steel brackets as detailed in Rallye Service Bulletin No. 12/1.\n\n \n\nCompliance: For Part 1 - at intervals not exceeding 25 hours time in service until incorporating of Part 2.\n\n \n\nFor Part 2 - within 100 hours time in service after 13 April 1972.\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 straightforward amendment (Amdt 1) to an existing Airworthiness Directive. The scope remains tightly focused on the specific structural defect in the horizontal stabiliser attachment brackets. There is no evidence of scope creep; it addresses exactly the safety issue it was created for."},"complexity_factors":["Very short document (under 200 words)","Only 4 defined models/serial number ranges in applicability","Simple two-part requirement structure (inspect, then replace)","Clear compliance deadlines with specific flight hour intervals","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","Single technical reference to manufacturer Service Bulletin No. 12/1"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for specific **Aerospatiale Rallye aircraft** (models MS880, 881, 885 and 886 with serial numbers 1 to 395).\n\n**What it requires:**\n- **Part 1:** Regular inspections of the front brackets that attach the horizontal tail (the small wing at the back of the plane) to the fuselage. These inspections must happen **every 25 flight hours** until the permanent fix is done.\n- **Part 2:** A permanent modification — replacing the original light alloy (aluminium) brackets with stronger **steel brackets**. This must be done within **100 flight hours after 13 April 1972**.\n\n**Why it matters:**\nThe original aluminium brackets were prone to cracking or failure, which could cause the tail to detach in flight — obviously catastrophic. This directive forces owners to inspect frequently until they upgrade to the safer steel design.\n\n**Who it affects:**\nOwners and operators of early-model Rallye aircraft built before this design flaw was corrected at the factory."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This instrument is labelled 'Amdt 1' to AD/MSR/5, indicating it amends an earlier version of this Airworthiness Directive. The supplied text does not include the prior version or a comparison, so the specific differences in scope or technical content between the amendment and the original cannot be determined from this document alone. (header: AD/MSR/5 Amdt 1)"},"complexity_factors":["Narrow applicability limited to four model types and a defined serial-number range (Applicability)","Two-step requirement structure: recurring inspections until a one-time modification is completed (Requirement: Part 1; Requirement: Part 2)","Short inspection interval (every 25 hours time in service) requiring operational tracking until modification is done (Compliance: For Part 1)","Fixed conversion deadline tied to a historical date (100 hours after 13 April 1972), requiring retrospective calculation for compliance (Compliance: For Part 2)","Dependence on an external technical document (Rallye Service Bulletin No. 12/1) for inspection and modification details (Requirement)"],"plain_english_summary":"The directive, issued by the Civil Aviation Safety Authority, requires owners/operators of Aerospatiale Rallye MS880/881/885/886 (S/N 1–395) to perform regular inspections of the horizontal stabiliser forward light‑alloy attachment brackets per Rallye Service Bulletin No.12/1 at intervals ≤25 hours until those brackets are replaced with steel brackets. The steel conversion must be completed within 100 hours’ time in service from 13 April 1972; owners bear the inspection and conversion costs and must track hours."}},"importantCases":[],"_links":{"self":"/api/acts/ad-msr-5-amdt-1-horizontal-stabiliser-front-attachment-brackets-inspection-and-modification","history":"/api/acts/ad-msr-5-amdt-1-horizontal-stabiliser-front-attachment-brackets-inspection-and-modification/history","analysis":"/api/acts/ad-msr-5-amdt-1-horizontal-stabiliser-front-attachment-brackets-inspection-and-modification/analysis","conflicts":"/api/acts/ad-msr-5-amdt-1-horizontal-stabiliser-front-attachment-brackets-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-msr-5-amdt-1-horizontal-stabiliser-front-attachment-brackets-inspection-and-modification/important-cases","documents":"/api/acts/ad-msr-5-amdt-1-horizontal-stabiliser-front-attachment-brackets-inspection-and-modification/documents"}}