{"id":"F2006B09442","name":"AD/ELECT/67 - Aerospace Lighting Corporation Cabin Fluorescent Lighting System Components","slug":"ad-elect-67-aerospace-lighting-corporation-cabin-fluorescent-lighting-system-components","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53869,"registerId":"commonwealth-F2006B09442-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ELECT/67 - Aerospace Lighting Corporation Cabin Fluorescent Lighting System Components","content":"![](image.001.png)  \nElectrical Equipment\n\nAD/ELECT/67 Aerospace Lighting Corporation Cabin\n\nFluorescent Lighting System Components\n\n  \n3/96\n\nApplicability: This Directive is applicable to the following Aerospace Lighting Corporation (ALC) products:\n\nLamp Connectors part number (P/N) 31.85.1.A; Series 66 fluorescent lamps;\n\nPower Units P/N TR-991, TR-992, AL-0546 and AL-0514; and Power Supplies P/N 18-95D and AL-0598.\n\nNote 1: These products are utilised in cabin fluorescent lighting systems and are known to be installed on, but not limited to, the following aircraft series:\n\nAirbus Industrie A310\n\nAvion Marcel Dassault Aviation Falcon 10\n\nBoeing 727, 737, 747 and 757\n\nRaytheon Corporate Jets (formerly BAe) HS 125-600, -700, -800 and -1000 Bombardier Canadair CL-600-1A11, \\-2A12, \\-2B16, \\-2B19,\n\nCL-601, CL-601-3A and \\-3R\n\nCessna 550 and 560\n\nDassault Aviation Mystere-Falcon 20 and 50\n\nEmbraer EMB-120\n\nGulfstream G-159, G-1159, G-1159A and G-IV\n\nIsrael Aircraft Industries 1124 and 1125\n\nJetstream 3100\n\nLearjet 35 and 36\n\nSaab SF 340A\n\nSikorsky S-76A\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nNote 2: The following information is provided as an aid to the identification of fluorescent lighting system components manufactured by ALC. Components manufactured by ALC and those manufactured by SELA Laboratoire Abadie (SELA) are very similar in size, shape, colour and part number, however they may be identified by trademark. The ALC power unit can be identified by a stylised ALC logo with \\`Aerospace Lighting Corp' in smaller print beneath the logo while the SELA power unit can be identified by a starburst pattern incorporating the text \\`laboratoire, abadie, France'. The ALC lamp connector has ALC moulded into the body of the conical piece of the connector while the SELA lamp connector is only stamped in yellow ink. The ALC lamp can be positively identified by the presence of a small hole in the locking channel of each blue plastic end piece.\n\nRequirement: 1. Inspect the cabin fluorescent lighting system in accordance with ALC Information Bulletin IB 90-001 dated 15 August 1992 Part IV \\`Fluorescent Lighting System Components Identification and Inspection Procedures' sub-paragraphs B.1, 2, 3, 5, 6 and 7.\n\n    2. Remove and replace, in accordance with the procedures in Part IV sub-paragraphs B.4, 8 and 9 of IB 90-001 dated 15 August 1992, any part or parts found to be damaged or improperly configured.\n\nNote: FAA AD 95-22-01 Amdt 39-9408 refers.\n\nCompliance: For Requirement 1 \\- If not previously accomplished in accordance with AD/ELECT/56, then prior to 29 April 1996.\n\nFor Requirement 2 \\- Before further flight, if any part or parts are found to be damaged or improperly configured during the Requirement 1 inspection or within five flights or 10 hours time in service, whichever occurs first, of a cabin fluorescent lighting system component failure.\n\nReplacement of the following ALC parts, in accordance with the following instructions, constitutes terminating action for the repetitive inspection requirement following failure of a lighting system component:\n\n    Remove power units, P/N TR-991 or AL-0546, and replace with protected power unit, P/N AL-5117, in accordance with ALC Installation Instruction No AL-11025M dated 15 March 1992.\n\n    b. Remove power units, P/N TR-992 or AL-0514, and replace with protected power unit, P/N AL-5112, in accordance with ALC Installation Instruction No AL-11024M dated 15 March 1992.\n\n    c. Remove power supplies, P/N 18-95D or AL-0598 and dimmer, P/N 22-311 or AL-0542, and replace with protected power supply, unit P/N AL-5118 or AL- 5130, in accordance with ALC Installation Instruction No AL-11023M, Revision A dated 20 May 1994.\n\nBackground: Numerous incidents of smoke and fire have been reported on aircraft using SELA Laboratoire Abadie and ALC fluorescent lighting system components. The cause of these incidents has been attributed to high voltage arcing or overheating of the lamp connector or remote power unit and prompted the issuing of AD/ELECT/56.\n\nThis Directive partially supersedes AD/ELECT/56 and is applicable to components manufactured by ALC. This Directive clarifies both the requirement and compliance statements, whilst also providing an optional terminating action to the repetitive inspection following failure of a lighting system component. Actions specified by this Directive are necessary in order to prevent smoke, fire and possible electric shock or electromagnetic interference to flight critical or essential systems.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"This Directive narrows and clarifies the earlier instrument (AD/ELECT/56) by explicitly applying to components manufactured by ALC and by setting out clarified inspection and compliance steps. It also adds an optional terminating action (specified protected replacement parts and installation instructions) that was not set out in the earlier directive. In short, the Directive retains the original safety objective but changes scope by (1) singling out ALC-manufactured components for these procedures, (2) clarifying the required inspection steps and compliance timing, and (3) offering a replacement-based terminating action that alters longer-term obligations for operators."},"complexity_factors":["Multiple specific part numbers listed (at least 8 distinct P/Ns for lamps, power units and supplies, plus dimmer P/Ns and replacement P/Ns)","Cross-references to external technical documents: ALC Information Bulletin IB 90-001 (multiple sub-paragraphs) and multiple ALC Installation Instructions (AL-11025M, AL-11024M, AL-11023M Rev A)","Conditional compliance timing (deadline if not previously done; immediate/\"before further flight\" replacement if damage found; within five flights or 10 hours after a component failure)","Partial supersession of a prior directive (AD/ELECT/56) and an explicit reference to an FAA AD (95-22-01), creating interlocking regulatory history","Optional terminating action (replacement with protected units) that changes ongoing inspection obligations, introducing choice and state-dependency","Identification nuance: ALC and SELA components are visually similar, requiring non-trivial inspection/identification procedures (Note 2)","Lists of aircraft types as non-exhaustive examples (broad operational footprint but limited to the listed components)"],"plain_english_summary":"**What this Directive requires (mechanically)**\n\n- Inspect cabin fluorescent lighting system components that were manufactured by Aerospace Lighting Corporation (ALC): lamp connectors P/N 31.85.1.A (Series 66 lamps), power units P/N TR-991, TR-992, AL-0546, AL-0514 and power supplies P/N 18-95D, AL-0598. (Applicability)\n- Carry out the inspection using the identification and inspection procedures in ALC Information Bulletin IB 90-001, Part IV, sub-paragraphs B.1, 2, 3, 5, 6 and 7. (Requirement 1)\n- If any component is found damaged or improperly configured, remove and replace it following the procedures in IB 90-001 Part IV sub-paragraphs B.4, 8 and 9. (Requirement 2)\n- Replacing certain listed older ALC power units and supplies with specified \"protected\" ALC replacement units (and following the ALC installation instructions cited) ends the need for repetitive inspections after a component failure. The specified replacements are:\n  - TR-991 or AL-0546 → AL-5117 (Installation Instruction AL-11025M) \n  - TR-992 or AL-0514 → AL-5112 (Installation Instruction AL-11024M)\n  - 18-95D or AL-0598 and dimmer 22-311 or AL-0542 → AL-5118 or AL-5130 (Installation Instruction AL-11023M, Revision A)\n  (Termination actions)\n\n**Timing for compliance**\n\n- If the inspection has not already been done under an earlier directive (AD/ELECT/56), it must be completed by 29 April 1996. (Compliance: Requirement 1)\n- If an inspection reveals damaged or improperly configured parts, those parts must be replaced before the aircraft's next flight. If a lighting-system component fails in service, replacement is required within five flights or 10 hours time-in-service after that failure, whichever comes first. (Compliance: Requirement 2)\n\n**Identification help and scope**\n\n- The Directive includes guidance to distinguish ALC parts from visually similar parts made by SELA Laboratoire Abadie; the two are similar in appearance but carry different markings. The inspection/identification procedures in IB 90‑001 are the reference. (Note 2)\n\n**Why the Directive exists (official rationale)**\n\n- The Directive is issued because incidents of smoke and fire have been linked to high-voltage arcing or overheating in ALC and SELA cabin fluorescent lighting components. The stated safety goal is to prevent smoke, fire, electric shock and electromagnetic interference (EMI) that could affect flight‑critical systems. The Directive partially supersedes an earlier AD (AD/ELECT/56) and clarifies inspection and compliance requirements while offering replacements as an optional terminating action. (Background)\n\n**Who this affects and who pays**\n\n- Affected parties: aircraft operators/owners and maintenance organisations that have the listed ALC cabin fluorescent lighting components installed (the Directive lists many aircraft makes and models as examples). (Applicability, Note 1)\n- Who pays: operators/owners pay for inspections, part removals/replacements, and any aircraft downtime for those works. Approved maintenance organisations perform the work according to the ALC instructions.\n\n**Practical effects on behaviour and choices**\n\n- Operators must inspect identified components per the ALC bulletin and replace damaged or misconfigured parts promptly.\n- Operators may choose to install the specified protected replacement units; doing so removes the need for repetitive inspections after a failure (terminating action).\n- Maintenance organisations must be able to identify ALC parts correctly (the Directive warns of close similarity with SELA parts).\n\n**Costs, incentives and implementation risks**\n\n- Direct costs: inspection labour, possible part replacement costs, and aircraft downtime. The installation of the specified protected replacement parts concentrates aftermarket demand toward those replacement P/Ns (which benefits the manufacturer of those units). (Replacement/Termination instructions)\n- Supply/availability risk: if protected replacement units are in limited supply, operators may face delays or extended grounding to comply.\n- Identification risk: because ALC and SELA components look similar, misidentification could either leave unsafe ALC parts in service or cause unnecessary replacement of SELA parts; the Directive mitigates this by giving physical-marking cues (Note 2).\n- Compliance burden: the Directive mandates inspection by a due date (or immediately in case of failure), and gives explicit installation instructions to follow; discretion is therefore limited to the technical judgement required to identify damage or improper configuration.\n- Trade-offs: the measure reduces the risk of fire/EMI but imposes costs on operators and concentrates replacement purchases toward specific parts and installation procedures.\n\n**Where to look in the text**\n\n- Requirements and compliance deadlines are set out under \"Requirement\" and \"Compliance\". Replacement (terminating) actions and installation instruction references are in the Replacement/terminating action paragraphs. Identification guidance is in Note 2 and aircraft applicability examples are in Note 1.\n"},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing specific fire and smoke risks in ALC cabin fluorescent lighting components. While it partially supersedes a prior directive and adds optional terminating actions, this represents refinement and clarification of the original safety purpose rather than scope creep. The document remains tightly focused on the identified defective parts and their replacement."},"complexity_factors":["Multiple part numbers across three product categories (lamp connectors, power units, power supplies) with specific replacement part cross-references","Conditional compliance deadlines: Requirement 1 has a fixed date (29 April 1996) unless already done under previous AD/ELECT/56; Requirement 2 is immediate ('before further flight') if damage found","Terminating action provisions require matching specific old part numbers to specific new part numbers with corresponding installation instruction documents","Visual identification requirements distinguishing ALC parts from similar SELA parts using trademark/logos and physical features (hole in locking channel, moulded vs stamped markings)","Cross-reference to FAA AD 95-22-01 and supersession of prior Australian AD/ELECT/56","Nested applicability: applies to listed ALC products, which are 'known to be installed on, but not limited to' 19 specific aircraft series"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspections and immediate replacement of certain Aerospace Lighting Corporation (ALC) cabin lamp connectors and power units after reports of electrical arcing, overheating, smoke and in‑flight fires. It applies to operators of affected commercial and business jets (e.g., various Boeing, Airbus, Learjet, Gulfstream types) that have these ALC parts installed.\n\nOperators must inspect per manufacturer guidance, remove defective parts before flight, or install upgraded protected power units to terminate recurring inspections — preventing cabin fires and related hazards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-elect-67-aerospace-lighting-corporation-cabin-fluorescent-lighting-system-components","history":"/api/acts/ad-elect-67-aerospace-lighting-corporation-cabin-fluorescent-lighting-system-components/history","analysis":"/api/acts/ad-elect-67-aerospace-lighting-corporation-cabin-fluorescent-lighting-system-components/analysis","conflicts":"/api/acts/ad-elect-67-aerospace-lighting-corporation-cabin-fluorescent-lighting-system-components/conflicts","importantCases":"/api/acts/ad-elect-67-aerospace-lighting-corporation-cabin-fluorescent-lighting-system-components/important-cases","documents":"/api/acts/ad-elect-67-aerospace-lighting-corporation-cabin-fluorescent-lighting-system-components/documents"}}