{"id":"F2006B09033","name":"AD/DHC-2/16 - Aileron Centre Hinge Bracket - Inspection","slug":"ad-dhc-2-16-aileron-centre-hinge-bracket-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52727,"registerId":"commonwealth-F2006B09033-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-2/16 - Aileron Centre Hinge Bracket - Inspection","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nDHC-2 (Beaver) Series Aeroplanes\n\nAD/DHC-2/16 Aileron Centre Hinge Bracket \\- Inspection 2/71\n\nApplicability: All models with brackets P/N 02-B-58 and P/N 02-B-58-1.\n\nRequirement: Remove the mass balance assembly from the stub tube of each centre hinge bracket and visually inspect the elliptical tube using a 4X magnifying glass for cracks in the weld areas at the connection to the torque tube and around the extremities of welded bushes.\n\nCompliance: For components with less than 400 hours total time in service as at 31 March 1971 \\- at or before achieving 500 hours total time in service; or\n\nFor components with more than 400 hours total time in service as at 31 March 1971 \\- within 100 hours time in service after 31 March 1971; and\n\nThereafter at intervals not exceeding 100 hours time in service.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1808},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original issuance of the Directive, maintaining its original narrow scope focused solely on the inspection of aileron centre hinge brackets on DHC-2 Beaver aircraft. There is no indication of scope creep or expansion beyond the original airworthiness safety intent."},"complexity_factors":["Single, specific mechanical component targeted (only two part numbers)","Simple bifurcated compliance schedule based on 400-hour threshold","Minimal defined terms and no cross-referencing to other legislation","Linear inspection procedure with no exceptions, exemptions, or conditional logic beyond the initial compliance split"],"plain_english_summary":"This AD affects DHC-2 Beaver aircraft fitted with aileron centre hinge brackets (P/N 02-B-58 and 02-B-58-1). It mandates removal of the mass-balance assembly and a 4× visual inspection of the elliptical stub tube welds and bushes for cracks, with initial compliance timing tied to the component’s flight hours as of 31 March 1971 and repeat inspections every 100 flight hours. It matters because cracked hinge brackets can cause loss of aileron control and a potential accident."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-2-16-aileron-centre-hinge-bracket-inspection","history":"/api/acts/ad-dhc-2-16-aileron-centre-hinge-bracket-inspection/history","analysis":"/api/acts/ad-dhc-2-16-aileron-centre-hinge-bracket-inspection/analysis","conflicts":"/api/acts/ad-dhc-2-16-aileron-centre-hinge-bracket-inspection/conflicts","importantCases":"/api/acts/ad-dhc-2-16-aileron-centre-hinge-bracket-inspection/important-cases","documents":"/api/acts/ad-dhc-2-16-aileron-centre-hinge-bracket-inspection/documents"}}