{"id":"F2006B07311","name":"AD/TB10/9 - Stabilator Control Rod Ends","slug":"ad-tb10-9-stabilator-control-rod-ends","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49325,"registerId":"commonwealth-F2006B07311-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TB10/9 - Stabilator Control Rod Ends","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 (Socata) TB9 and TB10 (Tobago) Series Aeroplanes\n\n \n\nAD/TB10/9 Stabilator Control Rod Ends 4/87 DM\n\nApplicability: All models with S/Nos 1 to 709, except S/Nos 652, 653, 661, 664, 665, 672, 691, 701\n\nto 706.\n\n \n\nRequirement: Action in accordance with Socata S.B. No. 29.\n\n \n\nNote: Bureau Veritas AD 87-003(A) refers.\n\n \n\nCompliance: Within 25 hours time-in-service after 6 February 1987 and thereafter at each scheduled inspection for Maintenance Release issue until modified.\n\n \n\nBackground: The manufacturer reports instances of stabilator operating rod ends with excessive play due to loose rivets.\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":3,"scope_assessment":{"changed":false,"description":"The directive’s scope is defined by the listed aircraft models and serial numbers and by the actions required in Socata S.B. No. 29. The AD does not expand or narrow its applicability beyond those explicit serial numbers, nor does it add additional categories of aircraft or requirements beyond the inspection/repair sequence and the recurring inspection until modification. (Applicability; Requirement; Compliance)"},"complexity_factors":["Specific serial-number-based applicability (narrow but requires checking aircraft records).","Short initial compliance window (25 hours TIS after 6 February 1987) creating scheduling pressure.","Recurring inspection requirement at each scheduled Maintenance Release until modification is completed.","Delegation of technical procedure to an external document (Socata Service Bulletin No. 29) rather than including detailed steps in the AD.","Cross-reference to another authority's AD (Bureau Veritas AD 87-003(A)) which may require coordination or comparison."],"plain_english_summary":"This AD requires owners/operators of specified Aerospatiale (Socata) TB9/TB10 aeroplanes (S/Ns 1–709 except listed exclusions) to inspect stabilator control rod ends and carry out corrective work per Socata Service Bulletin No. 29—initially within 25 hours TIS after 6 Feb 1987 and at each scheduled Maintenance Release until the modification is done. It responds to reported loose rivets causing excessive play; operators bear inspection/repair costs and downtime to mitigate control‑surface risk."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of ensuring stabilator control rod integrity."},"complexity_factors":["Very short document (approximately 150 words)","Only 4 defined elements: applicability range, specific excluded serial numbers, reference to external technical document (Socata S.B. No. 29), and compliance timeframe","Single requirement with straightforward conditional logic (inspect until modified)","No nested exceptions or cross-references to other legislation","Simple temporal trigger (25 hours time-in-service after fixed date)"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:** It orders owners and operators of certain Socata TB9 and TB10 \"Tobago\" aeroplanes to inspect and fix a potentially dangerous problem with the stabilator control rod ends. The stabilator is a combined stabiliser and elevator (the movable part at the tail that controls whether the plane pitches up or down). The issue is that rivets holding these rod ends together can become loose, causing excessive play — which could affect the pilot's ability to control the aircraft's pitch.\n\n**Who it affects:** Owners and operators of Socata TB9 and TB10 aircraft with serial numbers 1 through 709, **except** serial numbers 652, 653, 661, 664, 665, 672, 691, and 701-706.\n\n**What must be done:**\n- **Follow the manufacturer's instructions** in Socata Service Bulletin No. 29\n- **First check:** Within 25 hours of flying time after 6 February 1987\n- **Ongoing checks:** At every scheduled inspection for Maintenance Release (the official document that says an aircraft is safe to fly) until a permanent modification is installed\n\n**Why it matters:** Loose rivets in flight controls are a serious safety risk. This AD ensures the problem is caught early and monitored until properly fixed."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tb10-9-stabilator-control-rod-ends","history":"/api/acts/ad-tb10-9-stabilator-control-rod-ends/history","analysis":"/api/acts/ad-tb10-9-stabilator-control-rod-ends/analysis","conflicts":"/api/acts/ad-tb10-9-stabilator-control-rod-ends/conflicts","importantCases":"/api/acts/ad-tb10-9-stabilator-control-rod-ends/important-cases","documents":"/api/acts/ad-tb10-9-stabilator-control-rod-ends/documents"}}