{"id":"F2006B09167","name":"AD/DHC-8/12 Amdt 1 - Emergency Lighting","slug":"ad-dhc-8-12-amdt-1-emergency-lighting","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52905,"registerId":"commonwealth-F2006B09167-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-8/12 Amdt 1 - Emergency Lighting","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)  Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes\n\n \n\nAD/DHC-8/12\n\nAmdt 1\n\n\nEmergency Lighting 9/91\n\n \n\nApplicability: All DHC-8 series aircraft S/No 1 through 179.\n\n \n\nRequirement: Action IAW Boeing Canada de Havilland SB 8-33-17 Revision B or later revision.\n\n \n\nNote: Transport Canada AD CF-90-08 refers.\n\n \n\nCompliance: The compliance date of the previous issue of this Directive was 17 May 1991. This revision is effective from 5 September 1991.\n\n \n\nBackground: In the current configuration the aircraft does not comply with the emergency lighting requirements of FAR 25.812. Transport Canada have advised of their intention to mandate compliance with this SB.\n\n \n\nAmendment 1 to this AD is issued to correct a typographical error in the Requirement Document reference number.\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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a minor administrative amendment correcting a typographical error in a document reference number. The substantive safety requirement remains unchanged from the original 1991 directive."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 substantive requirements: applicability and action required","Single cross-reference to Transport Canada AD CF-90-08 and manufacturer Service Bulletin","No defined terms section","No conditional logic or nested exceptions","Straightforward compliance date structure","Amendment is purely administrative (typo correction)"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of Bombardier DHC‑8 aircraft (serials 1–179) to modify their emergency lighting so it meets international standards (FAR 25.812) by following the manufacturer’s Service Bulletin 8‑33‑17 Rev B (or later).   \n\nIt’s a safety-order to ensure reliable evacuation lighting; Amendment 1 only corrects a typo in the document reference and does not change the requirement."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 1 only corrects a typographical error in the Requirement Document reference number; it does not change the AD's applicability, the required action (implementation of SB 8-33-17 Rev B or later), or the underlying compliance obligation to meet FAR 25.812."},"complexity_factors":["Dependency on an external Service Bulletin (SB 8-33-17 Revision B or later) — requires operators/maintainers to obtain and implement the SB.","Applicability narrowly defined by serial numbers (S/No 1–179) — requires fleet-level identification and tracking.","Cross-reference to foreign regulation and ADs (FAR 25.812; Transport Canada AD CF-90-08) — adds multi-jurisdictional compliance context.","Administrative amendment (typographical correction of Requirement Document reference) — low substantive change but requires record updates.","Specified compliance/effective dates (previous compliance date 17 May 1991; this revision effective 5 September 1991) — affects timing and retrospective compliance tracking."],"plain_english_summary":"This Airworthiness Directive requires Bombardier (De Havilland) DHC‑8 aeroplanes, serial numbers 1–179, to be modified or inspected per Boeing Canada de Havilland Service Bulletin 8‑33‑17 (Revision B or later) so their emergency lighting complies with FAR 25.812. It affects aircraft operators and maintenance organisations, who must arrange and pay for the mandated work and schedule downtime; CASA enforces compliance. Amendment 1 corrects a typographical error in the SB reference and does not alter the required action or affected fleet."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-8-12-amdt-1-emergency-lighting","history":"/api/acts/ad-dhc-8-12-amdt-1-emergency-lighting/history","analysis":"/api/acts/ad-dhc-8-12-amdt-1-emergency-lighting/analysis","conflicts":"/api/acts/ad-dhc-8-12-amdt-1-emergency-lighting/conflicts","importantCases":"/api/acts/ad-dhc-8-12-amdt-1-emergency-lighting/important-cases","documents":"/api/acts/ad-dhc-8-12-amdt-1-emergency-lighting/documents"}}