{"id":"F2006B06190","name":"AD/PHS/13 - Hub Rework","slug":"ad-phs-13-hub-rework","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47053,"registerId":"commonwealth-F2006B06190-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PHS/13 - Hub 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 - 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Propellers - Variable Pitch - Hamilton Standard\n\n \n\nAD/PHS/13 Hub Rework 4/89 DM\n\nApplicability: All model 14SF-5 and 14SF-7 propellers P/No 792000-3 with S/No as detailed in the requirement document fitted to, but not limited to, De Havilland Dash 8 and Aerospatiale ATR 42 aircraft.\n\n \n\nRequirement: Action in accordance with Hamilton Standard Alert Service Bulletin 14SF-61-A22.\n\n \n\nCompliance: Unless previously carried out by 30 April 1989, or prior to completing 200 hours time-in service whichever occurs earlier.\n\n \n\nBackground:  The bearing race seats and bolt torque plate seat were incorrectly shot peened during manufacture.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2097},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, targeted scope addressing a specific manufacturing defect in specific propeller models. There is no indication of scope expansion beyond the original safety issue."},"complexity_factors":["Single specific requirement referencing an external technical service bulletin","Narrow applicability limited to specific part numbers and serial numbers","Simple alternative compliance condition (date OR flight hours)","No nested exceptions or conditional logic"],"plain_english_summary":"**What this requires:**\nThis Airworthiness Directive mandates that aircraft operators inspect and rework specific Hamilton Standard propellers fitted to De Havilland Dash 8 and Aerospatiale ATR 42 aircraft. The affected propellers (models 14SF-5 and 14SF-7, part number 792000-3 with specific serial numbers) must be dealt with according to Hamilton Standard Alert Service Bulletin 14SF-61-A22.\n\n**Why it matters:**\nDuring manufacture, the bearing race seats and bolt torque plate seat were incorrectly \"shot peened\" (a surface hardening process using small metal beads). This manufacturing defect could compromise the structural integrity of the propeller hub, potentially creating a safety risk.\n\n**Who must comply:**\nOperators of aircraft fitted with these specific propeller models, particularly Dash 8 and ATR 42 aircraft.\n\n**Compliance deadline:**\nThe work had to be completed by 30 April 1989, or before the propeller reached 200 hours of flight time—whichever came first (unless already done)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-phs-13-hub-rework","history":"/api/acts/ad-phs-13-hub-rework/history","analysis":"/api/acts/ad-phs-13-hub-rework/analysis","conflicts":"/api/acts/ad-phs-13-hub-rework/conflicts","importantCases":"/api/acts/ad-phs-13-hub-rework/important-cases","documents":"/api/acts/ad-phs-13-hub-rework/documents"}}