{"id":"F2006B04576","name":"AD/BELL 212/44 - Swashplate Outer Ring","slug":"ad-bell-212-44-swashplate-outer-ring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114306,"registerId":"commonwealth-F2006B04576-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 212/44 - Swashplate Outer Ring","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)  Bell Helicopter Textron 212 Series Helicopters\n\n \n\nAD/BELL 212/44 Swashplate Outer Ring  7/90 DM\n\nApplicability: All Model 212 helicopters S/N 30501 thru 30999, 31101 thru 31311, 32101 thru\n\n32142 and 35001.\n\n \n\nRequirement: Action in accordance with BHT ASB 212-90-61. Compliance:  Prior to further flight after 25 May 1990.\n\nBackground: Due to a casting fault in one swashplate outer ring, which could result in cracking of the trunnion attachment points, a fleet-wide inspection is required.\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":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2337},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original issuance of the directive, targeted specifically at a known manufacturing defect in the swashplate outer ring casting. The scope remains narrowly confined to the identified safety issue and specified aircraft serial numbers."},"complexity_factors":["Single, specific safety requirement with no conditional exceptions","Narrow applicability limited to defined aircraft serial number ranges","Delegates technical implementation details to external service bulletin (BHT ASB 212-90-61)","Hard compliance deadline with no alternative compliance methods stated"],"plain_english_summary":"**What this does**\nThis is a mandatory safety order (called an Airworthiness Directive) requiring owners of specific Bell 212 helicopters to inspect or replace a critical rotor component known as the \"swashplate outer ring\" before the aircraft can fly again after 25 May 1990.\n\n**Who it affects**\nOwners and operators of Bell 212 helicopters with specific serial numbers: 30501 through 30999, 31101 through 31311, 32101 through 32142, and 35001.\n\n**Why it matters**\nA manufacturing defect (casting fault) was discovered in this part that could cause cracks where it attaches to the helicopter's control system. If the swashplate fails, the pilot could lose control of the main rotor, potentially causing a crash. This directive ensures the defect is found and fixed before the aircraft returns to service.\n\n**What must be done**\nOperators must follow the technical instructions in Bell Helicopter Service Bulletin 212-90-61 to inspect or replace the faulty component."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-212-44-swashplate-outer-ring","history":"/api/acts/ad-bell-212-44-swashplate-outer-ring/history","analysis":"/api/acts/ad-bell-212-44-swashplate-outer-ring/analysis","conflicts":"/api/acts/ad-bell-212-44-swashplate-outer-ring/conflicts","importantCases":"/api/acts/ad-bell-212-44-swashplate-outer-ring/important-cases","documents":"/api/acts/ad-bell-212-44-swashplate-outer-ring/documents"}}