{"id":"F2006B09738","name":"AD/F27/70 - Main Pneumatic Line - Modification","slug":"ad-f27-70-main-pneumatic-line-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115935,"registerId":"commonwealth-F2006B09738-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F27/70 - Main Pneumatic Line - Modification","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)  Fokker F27 Series Aeroplanes\n\n \n\nAD/F27/70 Main Pneumatic Line - Modification 6/69\n\nApplicability: All Mk. 300 and Mk. 400 Series with S/N 10162 to 10335 except 10332, 10333 and\n\n10334.\n\nDocument: Fokker SB 36-23.\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\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":2006},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted, technical safety directive addressing a specific mechanical component on specific aircraft models. It has remained narrow in scope, limited to the original safety issue with the Fokker F27 main pneumatic line."},"complexity_factors":["Extremely brief text (under 150 words)","Single requirement incorporated entirely by reference to external technical document (Fokker SB 36-23)","Narrow applicability restricted to specific aircraft serial numbers with explicit exclusions","No internal definitions, subsections, or conditional logic within the directive itself"],"plain_english_summary":"This AD legally requires owners/operators of certain Fokker F27 Mark 300/400 (S/N 10162–10335, excluding 10332–10334) to modify the main pneumatic line per Fokker Service Bulletin 36-23, which is incorporated by reference. It fixes a pneumatic-system safety defect; noncompliance can render affected aircraft unairworthy and grounded."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f27-70-main-pneumatic-line-modification","history":"/api/acts/ad-f27-70-main-pneumatic-line-modification/history","analysis":"/api/acts/ad-f27-70-main-pneumatic-line-modification/analysis","conflicts":"/api/acts/ad-f27-70-main-pneumatic-line-modification/conflicts","importantCases":"/api/acts/ad-f27-70-main-pneumatic-line-modification/important-cases","documents":"/api/acts/ad-f27-70-main-pneumatic-line-modification/documents"}}