{"id":"F2007L04751","name":"AD/ROBIN/13 Amdt 1 - Vertical Stabiliser Spar","slug":"ad-robin-13-amdt-1-vertical-stabiliser-spar","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":71266,"registerId":"commonwealth-F2007L04751-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Robin Aviation Series Aeroplanes","sectionType":"division","heading":"Robin Aviation Series Aeroplanes","content":"### Robin Aviation Series Aeroplanes\n\n| AD/ROBIN/13 Amdt 1 | Vertical Stabiliser Spar | 1/2008 |\n| ------------------ | ------------------------ | ------ |\n\n| Applicability: | Model R 2100, R 2100 A, R 2112, R 2120 U, R 2160, and R 2160i aircraft, serial numbers 001 through 378.                                                                                                                                                                                                                   |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Inspect in accordance with Avions Pierre Robin Service Bulletin (SB) No. 120.If cracking is detected, before further flight, modify the vertical stabiliser in accordance with SB No. 120 and modification 97.40.03.Note: NZ CAA AD DCA/R2000/19 and DGAC AD F-1990-224 refer.                                            |\n| Compliance:    | Unless the initial inspection has already been accomplished, before further flight after 17 January 2007, and thereafter at intervals not to exceed 100 hours time in service; until modified in accordance with SB No. 120 and modification 97.40.03.                                                                    |\n|                | This Amendment becomes effective on 17 January 2008.                                                                                                                                                                                                                                                                      |\n| Background:    | Reports were received of cracks in the vertical stabiliser spar at the lower fitting of the rudder.Amendment 1 is issued to align this Directive with the related NZ CAA Directive which was issued as a result of Alpha Aviation becoming the Type Certificate holder for Model HR 200 and Model R 2000 series aircraft. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n29 November 2007","sortOrder":0},{"sectionNumber":"AD/ROBIN/13 Amdt 1","sectionType":"part","heading":"AD/ROBIN/13 Amdt 1","content":"## AD/ROBIN/13 Amdt 1","sortOrder":1},{"sectionNumber":"Vertical Stabiliser Spar","sectionType":"part","heading":"Vertical Stabiliser Spar","content":"## Vertical Stabiliser Spar","sortOrder":2},{"sectionNumber":"1/2008","sectionType":"part","heading":"1/2008","content":"## 1/2008","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope — addressing a specific structural defect in defined Robin Aviation aircraft. Amendment 1 merely updates administrative alignment with New Zealand's aviation authority following a change in Type Certificate holder; it does not expand the technical scope or add new requirements beyond the original safety purpose."},"complexity_factors":["Single, specific mechanical issue addressed (vertical stabiliser spar cracking)","Only 6 aircraft models and defined serial number range affected","Clear, unconditional requirement: inspect, and if cracked, repair before flight","Simple compliance timeline: one-time deadline plus recurring 100-hour intervals","No nested exceptions, conditional clauses, or extensive cross-references to other legislation","References only to manufacturer service bulletins and related foreign directives (informational only)"],"plain_english_summary":"Owners/operators of Robin Aviation light aircraft (models R 2100, R 2100 A, R 2112, R 2120 U, R 2160 and R 2160i, s/n 001–378) must inspect the vertical stabiliser spar for cracks per Service Bulletin No. 120. Aircraft with cracks are grounded until repaired/modifed with SB No. 120 and kit 97.40.03.\n\nInspections due by 17 Jan 2007 if not already done, then every 100 flight hours until the permanent modification is fitted. This prevents potential loss of rudder control from spar failure."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"Amendment 1 aligns this Directive with a related New Zealand CAA Directive issued after Alpha Aviation became the type‑certificate holder for relevant R/HR 2000 series aircraft (Background). Practically, it formalises the inspection requirement, the 100‑hour recurring interval and the requirement to modify the stabiliser if cracks are found (Requirement & Compliance), thereby adjusting the Directive to match the foreign AD and the new type‑certificate context."},"complexity_factors":["Applicability limited to specific models and serial numbers (Applicability) — requires operators to check serial coverage.","Dependence on external technical documents: Avions Pierre Robin Service Bulletin No. 120 and modification 97.40.03 (Requirement) — inspectors and maintainers must consult and follow those documents.","Timing and repeat-inspection rule: immediate inspection before further flight after 17 Jan 2007 and recurring inspections at intervals not exceeding 100 hours until modification (Compliance) — requires tracking flight hours and scheduling.","Action-before-flight trigger: cracking requires modification before further flight (Requirement) — creates a hard grounding/repair obligation if defects found.","Cross-reference to foreign airworthiness directives (NZ CAA AD and DGAC AD) and stated alignment motive (Background) — introduces multi-jurisdictional sourcing and potential interpretive issues.","Effective date and administrative enforcement by CASA delegate (Compliance & signature) — creates a legal obligation with a clear start date."],"plain_english_summary":"Requires operators of Robin models R 2100, R 2100 A, R 2112, R 2120 U, R 2160 and R 2160i (serials 001–378) to inspect the vertical stabiliser spar per Avions Pierre Robin Service Bulletin No. 120 and to modify the stabiliser before further flight if cracking is found; inspections must be done before further flight after 17 January 2007 and every 100 hours until the modification is embodied (Requirement & Compliance). It affects owners/operators who pay for inspections and repairs; CASA issued the amendment to address reported spar cracks and to align with an NZ CAA directive after a type‑certificate holder change."}},"importantCases":[],"_links":{"self":"/api/acts/ad-robin-13-amdt-1-vertical-stabiliser-spar","history":"/api/acts/ad-robin-13-amdt-1-vertical-stabiliser-spar/history","analysis":"/api/acts/ad-robin-13-amdt-1-vertical-stabiliser-spar/analysis","conflicts":"/api/acts/ad-robin-13-amdt-1-vertical-stabiliser-spar/conflicts","importantCases":"/api/acts/ad-robin-13-amdt-1-vertical-stabiliser-spar/important-cases","documents":"/api/acts/ad-robin-13-amdt-1-vertical-stabiliser-spar/documents"}}