{"id":"F2006B02229","name":"AD/AIRCON/3 - Godfrey Cabin Supercharger Type 15 - Rotor Balance - Inspection","slug":"ad-aircon-3-godfrey-cabin-supercharger-type-15-rotor-balance-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41459,"registerId":"commonwealth-F2006B02229-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AIRCON/3 - Godfrey Cabin Supercharger Type 15 - Rotor Balance - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue NK,Equipment,Airconditioning Equipment,Godfrey Cabin Supercharger Type 15 - Rotor Balance - Inspection,3\ntitle: Airworthiness Directive - AD/AIRCON/3 - Godfrey Cabin Supercharger Type 15 - Rotor Balance - Inspection\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Airconditioning Equipment\n\n \n\nAD/AIRCON/3 Godfrey Cabin Supercharger Type 15 - Rotor NK\n\nBalance - Inspection\n\nApplicability: All Godfrey Cabin Superchargers Type 15.\n\n \n\nRequirement: Dynamically balance the rotors to within 0.020oz. in accordance with the technique specified in the approved overhaul manual.\n\n \n\nCompliance: New Rotors: Before initial installation in an aircraft. Used Rotors: Before installation in an aircraft following each overhaul completed after 30 January 1968.\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":1670},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains a narrow, technical scope focused solely on rotor balancing requirements for the specific Godfrey Cabin Supercharger Type 15 model, with no indication of expansion beyond the original equipment safety mandate."},"complexity_factors":["Extremely brief document (under 150 words)","Single substantive requirement with minimal conditional branching","No internal cross-references to other legislative provisions","Only two applicability categories (new vs. used rotors) with clear compliance dates"],"plain_english_summary":"This is a **safety rule for aircraft maintenance** that applies to a specific piece of equipment: the Godfrey Cabin Supercharger Type 15 (an air conditioning compressor used in some aircraft).\n\n**What it requires:**\nMechanics must **dynamically balance the rotating parts (rotors)** inside these superchargers. This means ensuring the spinning components are weighted evenly so they don't vibrate dangerously. The balance must be precise — within 0.020 ounces — and done using the method described in the manufacturer's approved overhaul manual.\n\n**When it applies:**\n*   **New rotors:** Before installing a brand-new rotor in an aircraft for the first time\n*   **Used rotors:** Before reinstalling a rotor that has been overhauled, but only if the overhaul was completed after January 30, 1968\n\n**Why it matters:**\nUnbalanced rotating parts can cause severe vibrations that damage the aircraft or cause equipment failure mid-flight. This rule prevents mechanical failures by ensuring these components spin smoothly."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aircon-3-godfrey-cabin-supercharger-type-15-rotor-balance-inspection","history":"/api/acts/ad-aircon-3-godfrey-cabin-supercharger-type-15-rotor-balance-inspection/history","analysis":"/api/acts/ad-aircon-3-godfrey-cabin-supercharger-type-15-rotor-balance-inspection/analysis","conflicts":"/api/acts/ad-aircon-3-godfrey-cabin-supercharger-type-15-rotor-balance-inspection/conflicts","importantCases":"/api/acts/ad-aircon-3-godfrey-cabin-supercharger-type-15-rotor-balance-inspection/important-cases","documents":"/api/acts/ad-aircon-3-godfrey-cabin-supercharger-type-15-rotor-balance-inspection/documents"}}