{"id":"F2006B10037","name":"AD/G1159/34 Amdt 1 - Fluorescent Lighting Installations Incorporating Series \"66\" Lamps","slug":"ad-g1159-34-amdt-1-fluorescent-lighting-installations-incorporating-series-66-lamps","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55448,"registerId":"commonwealth-F2006B10037-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G1159/34 Amdt 1 - Fluorescent Lighting Installations Incorporating Series \"66\" Lamps","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)  \nGulfstream (Grumman) G1159 and G-IV Series Aeroplanes\n\nAD/G1159/34\n\nAmdt 1\n\n  \n\nFluorescent Lighting Installations Incorporating Series “66\" Lamps\n\n  \n4/90\n\nApplicability: All Gulfstream II aircraft.\n\nRequirement: Action in accordance with Gulfstream Aerospace Customer Bulletin No. 390 required actions 1, 2, 3 and 4.1 only.\n\nNote: Aerospace Lighting Corp Information Bulletin 89-001 also refers.\n\nCompliance: Prior to 30 December 1989.\n\nBackground: Gulfstream have advised of an inflight fire in the area of the installed fluorescent lighting. Although the exact cause of the fire is unknown, likely causes and precautionary actions are detailed in the Requirement document.\n\nAmendment 1 to this AD is issued to clarify the required actions following requests from operators.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1708},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"Amendment 1 does not expand or alter the original scope of the airworthiness directive. It merely clarifies which specific actions from the referenced manufacturer bulletin are required (limiting them to items 1, 2, 3, and 4.1 only) following requests from operators for clarification. The applicability to all Gulfstream II aircraft and the fundamental safety objective (mitigating fluorescent lighting fire risk) remain identical to the original directive."},"complexity_factors":["Single, clearly defined applicability (Gulfstream II aircraft only)","One straightforward compliance action (follow specific numbered steps in external bulletin)","Single, absolute compliance date with no conditional extensions","No defined terms or interpretation sections","Amendment serves only to clarify existing requirements rather than add new layers"],"plain_english_summary":"Mandatory safety directive for Gulfstream II (G1159) operators requiring specific repairs to the fluorescent lighting installation to eliminate a demonstrated in‑flight fire hazard. Operators must comply with steps 1, 2, 3 and 4.1 of Gulfstream Aerospace Customer Bulletin No. 390 (not the entire bulletin), with work due by 30 December 1989.\n\nThis Amendment 1 clarifies which bulletin steps are mandatory at the operators' request."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-34-amdt-1-fluorescent-lighting-installations-incorporating-series-66-lamps","history":"/api/acts/ad-g1159-34-amdt-1-fluorescent-lighting-installations-incorporating-series-66-lamps/history","analysis":"/api/acts/ad-g1159-34-amdt-1-fluorescent-lighting-installations-incorporating-series-66-lamps/analysis","conflicts":"/api/acts/ad-g1159-34-amdt-1-fluorescent-lighting-installations-incorporating-series-66-lamps/conflicts","importantCases":"/api/acts/ad-g1159-34-amdt-1-fluorescent-lighting-installations-incorporating-series-66-lamps/important-cases","documents":"/api/acts/ad-g1159-34-amdt-1-fluorescent-lighting-installations-incorporating-series-66-lamps/documents"}}