{"id":"F2006B04875","name":"AD/CASA/19 - False Spar, Flap Housing Area","slug":"ad-casa-19-false-spar-flap-housing-area","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44682,"registerId":"commonwealth-F2006B04875-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CASA/19 - False Spar, Flap Housing Area","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/19 False Spar, Flap Housing Area 9/96\n\nApplicability: All models.\n\n \n\nRequirement: 1. Action in accordance with CASA document COM 212-224 dated 28 November 1990.\n\n \n\n2. Repair any cracking in accordance with a scheme approved pursuant to CAR 35.\n\n \n\nNote: Spanish DGAC AD 02/96 refers.\n\n \n\nCompliance: Within 1200 hours time in service after 15 August 1996. Where no cracking is found repeat inspection at intervals not exceeding 1200 hours time in service.\n\n \n\nBackground: Cracking has been detected in the area defined in the Requirement Document.\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 remains as stated in the instrument: it applies to all CASA 212 series aeroplanes and to the flap housing/false spar area as defined in the referenced Requirement Document (Applicability; Requirement). The AD requires inspections per CASA COM 212-224 and repair under a CAR 35-approved scheme (Requirement: 1–2), with compliance timing set at 1,200 hours after 15 August 1996 and repeat intervals not exceeding 1,200 hours (Compliance). There is no text in the instrument indicating an expansion or narrowing of that original scope."},"complexity_factors":["Cross-reference to an external technical document (CASA COM 212-224) for the required inspection actions rather than embedding procedures in the AD (Requirement: 1).","Requirement that repairs comply with a scheme approved under CAR 35, creating an approval/discretion step beyond the physical repair work (Requirement: 2).","Fixed compliance timing tied to time-in-service hours (within 1200 hours after 15 August 1996) and recurring inspection intervals (Compliance).","Applicability covers all CASA 212 models, increasing the operational population affected (Applicability: All models).","Minimal technical detail in the AD itself means implementers must obtain and follow the separate requirement document, which can present administrative friction (Requirement: 1)."],"plain_english_summary":"This AD mandates all CASA 212 operators inspect the flap‑housing/false‑spar area for cracking using CASA COM 212‑224, initially within 1,200 hours after 15 Aug 1996 and then every 1,200 hours. Any cracking must be repaired under a CAR 35‑approved scheme. It responds to detected cracking and imposes recurring inspection costs, potential downtime for approved repairs, and administrative dealings with CASA for repair approval."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific structural defect in a specific aircraft type. It has not expanded beyond its original purpose of ensuring the airworthiness of CASA 212 false spar structures."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 substantive requirements (inspection per specified document, repair if needed)","Single defined applicability (all CASA 212 models)","Simple compliance structure (time-based trigger with repeat interval)","Minimal cross-referencing (one CASA document reference, one Spanish AD reference)","No nested exceptions or conditional logic","Straightforward background (cracking detected, therefore inspect)"],"plain_english_summary":"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** (a twin-turboprop utility aircraft originally designed in Spain).\n\n**What it does:**\n- **Requires inspections** of a specific structural component called the \"false spar\" in the flap housing area (part of the wing structure that houses the flaps — the movable surfaces that help aircraft slow down and land).\n- **Mandates repairs** if cracks are found, using a repair scheme approved by CASA under Civil Aviation Regulation 35.\n\n**Who it affects:**\n- Owners and operators of all CASA 212 model aircraft.\n- Maintenance engineers responsible for keeping these planes airworthy.\n\n**Why it matters:**\n- **Safety critical.** Cracking in wing structures can lead to structural failure. This AD was issued because cracks had already been detected in this area on some aircraft.\n- **Legally binding.** Compliance is mandatory. Aircraft cannot legally fly unless this inspection is done within 1,200 flight hours after 15 August 1996, and repeated every 1,200 hours if no cracks are found.\n\n**Key compliance details:**\n- First inspection due within 1,200 hours of flight time after 15 August 1996.\n- If no cracks: repeat inspection every 1,200 flight hours.\n- If cracks found: must repair using CASA-approved methods.\n- References a Spanish aviation authority directive (DGAC AD 02/96), showing this was a known international issue."}},"importantCases":[],"_links":{"self":"/api/acts/ad-casa-19-false-spar-flap-housing-area","history":"/api/acts/ad-casa-19-false-spar-flap-housing-area/history","analysis":"/api/acts/ad-casa-19-false-spar-flap-housing-area/analysis","conflicts":"/api/acts/ad-casa-19-false-spar-flap-housing-area/conflicts","importantCases":"/api/acts/ad-casa-19-false-spar-flap-housing-area/important-cases","documents":"/api/acts/ad-casa-19-false-spar-flap-housing-area/documents"}}