{"id":"F2006B04565","name":"AD/BELL 212/33 - Main Rotor Grip/Blade Bolt - Inspection and Rework","slug":"ad-bell-212-33-main-rotor-grip-blade-bolt-inspection-and-rework","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114295,"registerId":"commonwealth-F2006B04565-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 212/33 - Main Rotor Grip/Blade Bolt - Inspection and Rework","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\n# AD/BELL 212/33  Main Rotor Grip/Blade Bolt - Inspection and Rework\n\nApplicability: All BHTI reworked grips which have had grip bushing(s) replaced. Requirement:  Bell Alert S.B. No. 212-85-37.\n\n# 3/85\n\nCompliance: Within 100 hours time in service after 31 March 1985 or at the next scheduled inspection for maintenance release issued after 31 March 1985 whichever is the later.\n\n \n\nBackground: There have been reports where an improper clearance was evident between the blade bolt head flange and the grip bushing. These reports have only pertained to grip assemblies returned to BHTI for repair/overhaul.\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":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1450},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope addressing the specific safety defect concerning main rotor grip clearances on reworked Bell 212 assemblies. There is no evidence of scope creep beyond the original technical safety issue identified in 1985."},"complexity_factors":["Single, specific technical requirement with no exceptions or conditional logic","Limited applicability scope (only BHTI reworked grips with replaced bushings)","Short length (single-page directive)","Relies on external technical document (Bell Service Bulletin) for detailed procedures"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Bell 212 helicopters with main rotor grips reworked by Bell Helicopter Textron (where the grip bushings were replaced) to inspect and correct blade bolts and grip assemblies per Bell Alert Service Bulletin No. 212-85-37.  \n\nThe work—required within 100 flight hours after March 31, 1985, or at the next scheduled maintenance—addresses improper clearance between the blade bolt head and grip bushing to prevent rotor-system mechanical failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-212-33-main-rotor-grip-blade-bolt-inspection-and-rework","history":"/api/acts/ad-bell-212-33-main-rotor-grip-blade-bolt-inspection-and-rework/history","analysis":"/api/acts/ad-bell-212-33-main-rotor-grip-blade-bolt-inspection-and-rework/analysis","conflicts":"/api/acts/ad-bell-212-33-main-rotor-grip-blade-bolt-inspection-and-rework/conflicts","importantCases":"/api/acts/ad-bell-212-33-main-rotor-grip-blade-bolt-inspection-and-rework/important-cases","documents":"/api/acts/ad-bell-212-33-main-rotor-grip-blade-bolt-inspection-and-rework/documents"}}