{"id":"F2006B07868","name":"Airworthiness Directives 2004 - Revocation and Remaking - FLS Aerospace OA7 Optica Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-fls-aerospace-oa7-optica-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50848,"registerId":"commonwealth-F2006B07868-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - FLS Aerospace OA7 Optica Series Aeroplanes","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nFLS Aerospace OA7 Optica Series Aeroplanes\n\nAD Name AD Number\n\nFlying Control System Bellcrank Assemblies AD/OPTICA/1\n\nEngine Pod Mounting Feet AD/OPTICA/2\n\nA51 Fan Replacement AD/OPTICA/3\n\nFan Shaft Extension AD/OPTICA/4\n\nAirframe Retirement Life AD/OPTICA/5\n\nEngine Control Linkage AD/OPTICA/6\n\nNose Undercarriage Leg Retention AD/OPTICA/7","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument does not change the substantive scope or content of the Airworthiness Directives it addresses. It revokes the earlier instruments listed in Schedule 1 and re-makes each AD as a separate attached instrument in exactly the same form as the latest published edition, preserving the existing obligations and coverage. (See operative paragraphs (a) and (b) and the Note.)"},"complexity_factors":["Instrument performs a narrow administrative function (revocation and re-making) rather than substantive regulatory change.","References a single statutory grant of power: subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998.","Seven separately named Airworthiness Directives are listed in Schedule 1 and attached as separate instruments.","Note explicitly states no change in the text of the re-made ADs, reducing substantive legal complexity.","Reliance on attachments (the re-made ADs) means the full legal effect depends on those attached texts, but this instrument itself is short and procedural."],"plain_english_summary":"This instrument, signed by a CSA delegate, revokes previously issued airworthiness directives for the FLS Aerospace OA7 Optica series and re‑makes each AD as a separate attached instrument. It affects owners, operators and maintainers of those aeroplanes by preserving existing AD obligations while changing only the legal form — an administrative re‑issue with no substantive change to requirements."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument maintains the exact same scope as the original Airworthiness Directives. The document explicitly states that each directive is being 're-made in exactly the same form as appears in the latest published edition.' There is no expansion of scope, no new requirements, and no additional aircraft types or safety issues being addressed. It is purely a procedural remaking to ensure legal validity."},"complexity_factors":["Very short document (approximately 200 words)","Only 1 defined term implicitly used ('Airworthiness Directive')","Simple binary structure: revocation + remaking","No conditional logic or exceptions","No cross-references to other legislation beyond the enabling regulation (subregulation 39.001(1))","Schedule contains only a simple table with 7 rows and 2 columns","Straightforward administrative action with no substantive policy changes"],"plain_english_summary":"This document is an official order from the Civil Aviation Safety Authority (CASA) that **revokes and reissues seven specific safety rules** for a particular type of aircraft called the **FLS Aerospace OA7 Optica Series**.\n\n**What it does:**\n- **Revokes** (cancels) seven existing Airworthiness Directives (ADs) — these are mandatory safety instructions that aircraft owners must follow to keep their planes airworthy (safe to fly).\n- **Re-makes** those same seven directives as new, separate legal instruments, keeping the exact same content as before.\n\n**The seven safety rules cover:**\n- **AD/OPTICA/1**: Bellcrank assemblies in the flying control system (parts that help move the aircraft's control surfaces)\n- **AD/OPTICA/2**: Engine pod mounting feet (how the engine is attached to the aircraft)\n- **AD/OPTICA/3**: A51 fan replacement (engine cooling fan)\n- **AD/OPTICA/4**: Fan shaft extension (part of the engine cooling system)\n- **AD/OPTICA/5**: Airframe retirement life (when the aircraft structure must be retired from service)\n- **AD/OPTICA/6**: Engine control linkage (mechanisms that control engine power)\n- **AD/OPTICA/7**: Nose undercarriage leg retention (front landing gear safety)\n\n**Who it affects:**\n- Owners and operators of FLS Aerospace OA7 Optica Series aeroplanes\n- Maintenance engineers working on these aircraft\n\n**Why it matters:**\nThis is an **administrative housekeeping exercise**. CASA is updating the legal form of these safety rules without changing their actual content. This ensures the directives remain legally valid and properly formatted under current regulations, maintaining safety standards for these specific aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fls-aerospace-oa7-optica-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fls-aerospace-oa7-optica-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fls-aerospace-oa7-optica-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fls-aerospace-oa7-optica-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fls-aerospace-oa7-optica-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fls-aerospace-oa7-optica-series-aeroplanes/documents"}}