{"id":"F2006B09742","name":"AD/F27/88 - Emergency Light - Modification","slug":"ad-f27-88-emergency-light-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115943,"registerId":"commonwealth-F2006B09742-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F27/88 - Emergency Light - 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/F27/88 Emergency Light - Modification 9/76\n\nApplicability: All models fitted with Phoenix Emergency Lights P/N 80024 Mk. 2, 80090 and 01-33002.\n\n \n\nRequirement: Install Phoenix emergency lights which have been modified so that the inertia switch operates at 2.2g + 10%.\n\n \n\nCompliance: Before 1 March 1977.\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":2451},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive remains tightly focused on its original purpose: modifying the trigger sensitivity of emergency lights on Fokker F27 aircraft. There is no indication of scope expansion beyond this specific safety fix."},"complexity_factors":["Single, unambiguous technical requirement","No defined terms section or interpretation provisions","No conditional logic, exceptions, or exemptions","Limited applicability (three specific part numbers on one aircraft type)"],"plain_english_summary":"This directive requires operators of Fokker F27 aircraft fitted with Phoenix emergency lights (P/N 80024 Mk.2, 80090, 01-33002) to modify the inertia switch so it trips at 2.2g ±10% (about 2.0–2.4g). Compliance was required by 1 March 1977. The change ensures emergency lighting activates in serious impacts but not during routine turbulence or hard landings, preserving battery life and evacuation safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f27-88-emergency-light-modification","history":"/api/acts/ad-f27-88-emergency-light-modification/history","analysis":"/api/acts/ad-f27-88-emergency-light-modification/analysis","conflicts":"/api/acts/ad-f27-88-emergency-light-modification/conflicts","importantCases":"/api/acts/ad-f27-88-emergency-light-modification/important-cases","documents":"/api/acts/ad-f27-88-emergency-light-modification/documents"}}