{"id":"F2006B04879","name":"AD/CASA/22 - Inner Flap Fittings","slug":"ad-casa-22-inner-flap-fittings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44686,"registerId":"commonwealth-F2006B04879-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CASA/22 - Inner Flap 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)  Casa 212 Series Aeroplanes\n\n \n\nAD/CASA/22 Inner Flap Fittings 9/96\n\nApplicability: All models.\n\n \n\nRequirement: Action in accordance with CASA SB 212-57-10.\n\n \n\nNote: Spanish DGAC AD 03/96 refers.\n\n \n\nCompliance: Within 100 hours time in service after 15 August 1996, thereafter at intervals not exceeding 100 hours until modified.\n\n \n\nBackground:  Cracking has been detected in the inner flap fittings. This Directive is issued to prevent an unsafe condition developing and going undetected.\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, as expressed in the text supplied, applies to all CASA 212 models and requires the actions set out in the referenced service bulletin on a recurring 100-hour schedule until modified (Applicability; Requirement; Compliance). There is no indication in the supplied text that the scope was altered from an earlier or original intent; the instrument itself defines its scope and compliance regime directly."},"complexity_factors":["Narrow, specific technical scope (inner flap fittings on CASA 212 series) reduces breadth of legal analysis (Applicability; Background).","Primary compliance mechanism is a cross-reference to an external technical document (CASA SB 212-57-10), so legal obligation depends on a separate service bulletin (Requirement).","Requires recurring action at fixed flight-hour intervals until a modification is completed, creating an ongoing compliance schedule rather than a one-off obligation (Compliance).","Contains a date-bound initial compliance window (within 100 hours after 15 August 1996), which requires operators to calculate hours-in-service against that starting point (Compliance).","References a foreign authority action (Spanish DGAC AD 03/96), adding an external regulatory cross-reference (Note)."],"plain_english_summary":"This airworthiness directive requires owners/operators of CASA 212 series aeroplanes to follow CASA Service Bulletin SB 212-57-10—including recurring actions at 100‑hour intervals until a specified modification is completed—to detect and prevent cracking in inner flap fittings. It replaces voluntary maintenance choices with a mandatory, ongoing inspection/repair obligation, shifting compliance costs and operational burden to operators."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted airworthiness directive addressing a specific safety defect in a specific aircraft type. It has not expanded beyond its original purpose of mandating inspections for cracked flap fittings."},"complexity_factors":["Single, specific mechanical component addressed (inner flap fittings)","Only one substantive requirement: follow the referenced service bulletin","Simple compliance timeline: 100 hours recurring until modification","No defined terms section, no cross-references to other legislation beyond the service bulletin","Background explanation is straightforward and non-technical","Document is essentially a one-page safety notice format"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) issued by Australia's Civil Aviation Safety Authority (CASA) for a specific type of aircraft — the CASA 212 series aeroplanes (a twin-turboprop utility aircraft originally designed in Spain).\n\n**What it requires:** Aircraft operators must inspect the \"inner flap fittings\" — metal brackets that connect the flaps (movable wing surfaces that help planes slow down and land) to the wing structure. The inspections must follow the procedure laid out in CASA Service Bulletin 212-57-10.\n\n**When to do it:** First inspection within 100 hours of flying time after 15 August 1996, then repeat every 100 hours of flying time until a permanent fix (modification) is installed.\n\n**Why it matters:** Cracks were found in these fittings. If left unchecked, a cracked fitting could fail, potentially causing the flap to detach or malfunction — a serious safety risk during takeoff or landing. This rule ensures cracks are caught before they become dangerous.\n\n**Who it affects:** Anyone operating a CASA 212 aircraft in Australia, including airlines, charter operators, and private owners."}},"importantCases":[],"_links":{"self":"/api/acts/ad-casa-22-inner-flap-fittings","history":"/api/acts/ad-casa-22-inner-flap-fittings/history","analysis":"/api/acts/ad-casa-22-inner-flap-fittings/analysis","conflicts":"/api/acts/ad-casa-22-inner-flap-fittings/conflicts","importantCases":"/api/acts/ad-casa-22-inner-flap-fittings/important-cases","documents":"/api/acts/ad-casa-22-inner-flap-fittings/documents"}}