{"id":"F2009L04405","name":"AD/SF340/26 Amdt 2 - Modification of Exit and Dome Light Assemblies","slug":"ad-sf340-26-amdt-2-modification-of-exit-and-dome-light-assemblies","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":82184,"registerId":"commonwealth-F2009L04405-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"SAAB SF340 Series Aeroplanes","sectionType":"division","heading":"SAAB SF340 Series Aeroplanes","content":"### SAAB SF340 Series Aeroplanes\n\n| AD/SF340/26 Amdt 2 | Modification of Exit and Dome Light Assemblies | 24/2009 |\n| ------------------ | ---------------------------------------------- | ------- |\n\n| Applicability: | SAAB SF340A-004 to -159 and SAAB 340B-160 to -179. As specified in SAAB-SCANIA AB Service Bulletin (SB) SAAB 340-33-030.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with SAAB-SCANIA AB SB 340-33-030 Revision 2.The use of later approved revisions of the Requirement document is acceptable for compliance with the requirements of this AD.Note 1: Swedish AD No. 1-047 refers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |\n| Compliance:    | In accordance with the requirement document with a revised compliance date of 31 August 1992, unless already accomplished in accordance with the above Requirement document as contained in Amendment 1 of this AD.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |\n|                | This Amendment becomes effective on 28 January 2010.Note 2: The original issue of this Directive became effective on 30 April 1986.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |\n| Background:    | The existing combination of power supply loads and the in-flight temperature gradient for the power packs in the emergency lighting system can lead to a reduction in the operating time below the required ten minutes.Amendment 1 of this AD introduced FAA AD 92-03-05 and SAAB SB 340-33-030 Revision 2 as Requirement documents, replacing Swedish AD No. 1-047. Also, the following Note was introduced “Revision 1 of SB 340-33-030 was issued for clarification of the text and correction of part Nos. Revision 2 of SB 340-330030 was issued to allow certain aircraft to retain the existing emergency dome light bulb”.This amendment includes editorial changes, redefines the applicability and removes reference to FAA AD 92-03-05 as a Requirement document. |\n\n![](image.001.png)\n\nWilliam David  \nDelegate of the Civil Aviation Safety Authority\n\n30 November 2009","sortOrder":0},{"sectionNumber":"AD/SF340/26 Amdt 2","sectionType":"part","heading":"AD/SF340/26 Amdt 2","content":"## AD/SF340/26 Amdt 2","sortOrder":1},{"sectionNumber":"Modification of Exit and Dome Light Asse","sectionType":"part","heading":"Modification of Exit and Dome Light Assemblies","content":"## Modification of Exit and Dome Light Assemblies","sortOrder":2},{"sectionNumber":"24/2009","sectionType":"part","heading":"24/2009","content":"## 24/2009","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment redefines applicability (serial-number ranges), removes FAA AD 92-03-05 as a Requirement document, and records a revised compliance date and effective date; it also introduces editorial clarifications and allows, under SB Revision 2, retention of existing dome light bulbs for certain aircraft."},"complexity_factors":["Reliance on an external service bulletin (`SB 340-33-030`) and allowance for later approved revisions increases procedural variability.","Applicability tied to specific SAAB SF340 serial-number ranges requires fleet-level applicability checks.","Multiple historical amendments and references (Swedish AD, FAA AD removed) create record-tracking and compliance-history complexity.","Technical issue hinges on combined power loads and in-flight temperature gradients affecting a ten-minute operating-time requirement.","Provision that Revision 2 allows certain aircraft to retain existing dome light bulbs introduces case-by-case parts/installation decisions.","Enforcement and effective dates differ across amendments, requiring administrators to reconcile timelines."],"plain_english_summary":"This directive requires modification of the exit and dome light assemblies on specified SAAB SF340 serial-number ranges by following SAAB‑SCANIA Service Bulletin `SB 340‑33‑030` (Revision 2 or later). It changes the aircraft emergency-lighting power/temperature arrangement to restore the required ten-minute operating time.\n\nOperators must pay for and carry out the modification; the Civil Aviation Safety Authority enforces it. The AD accepts later SB revisions, redefines which serials are affected, removes the FAA‑AD reference, and fixes compliance history and effective dates—affecting maintenance schedules and parts choices."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose: fixing the emergency lighting power pack issue in SAAB 340 aircraft. The 2010 amendment makes only editorial changes, updates applicability definitions, and removes an obsolete reference to an FAA directive. The core safety requirement — modifying the exit and dome light assemblies — has not expanded beyond the original 1986 intent."},"complexity_factors":["Short, single-purpose directive (approximately 300 words)","Only 4 defined applicability ranges (specific aircraft serial numbers)","Single primary technical reference (SAAB Service Bulletin 340-33-030 Rev 2)","Simple conditional structure: 'comply by X date unless already done'","Minimal cross-references (one Swedish AD, one FAA AD mentioned only in background)","No nested exceptions or complex definitional sections","Straightforward amendment history explaining what changed from previous versions"],"plain_english_summary":"This CASA Airworthiness Directive requires owners and operators of specified SAAB SF340 aeroplanes (serials 004–179) to modify emergency exit and interior dome lights per SAAB Service Bulletin 340‑33‑030 Rev 2. The change prevents temperature-driven rapid discharge of emergency-light power packs and preserves the required minimum 10 minutes of illumination. A 2010 amendment only updated paperwork and removed obsolete references."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-sf340-26-amdt-2-modification-of-exit-and-dome-light-assemblies","history":"/api/acts/ad-sf340-26-amdt-2-modification-of-exit-and-dome-light-assemblies/history","analysis":"/api/acts/ad-sf340-26-amdt-2-modification-of-exit-and-dome-light-assemblies/analysis","conflicts":"/api/acts/ad-sf340-26-amdt-2-modification-of-exit-and-dome-light-assemblies/conflicts","importantCases":"/api/acts/ad-sf340-26-amdt-2-modification-of-exit-and-dome-light-assemblies/important-cases","documents":"/api/acts/ad-sf340-26-amdt-2-modification-of-exit-and-dome-light-assemblies/documents"}}