{"id":"F2006B09246","name":"AD/DHC-8/87 - Overhead Bins Electrical Connectors","slug":"ad-dhc-8-87-overhead-bins-electrical-connectors","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53158,"registerId":"commonwealth-F2006B09246-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nBombardier (Boeing Canada/de Havilland) DHC-8 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/DHC-8/87 Overhead Bins Electric al Co","sectionType":"part","heading":"AD/DHC-8/87 Overhead Bins Electric al Connectors 8/2002","content":"# AD/DHC-8/87 Overhead Bins Electric al Connectors 8/2002\n\nApplicability: DHC-8 Series 300, Models 301, 311, 314 and 315 aeroplanes, serial numbers 100,\n\nand 202 through 433, excluding 271 and 408.\n\nRequirement: If not previously accomplished, install de Havilland Modification 8/2924 (Lighting \\- Replacement of Connectors and Addition of Wiring at Forward Overhead Bins) in accordance with de Havilland Alert Service Bulletin A8-33-39 Rev. A dated 24 October 1997.\n\nPrevious installations of modification 8/2924 in accordance with the basic issue of Service Bulletin A8-33-39, satisfy the requirements of this Directive.\n\nNote: Transport Canada AD CF-97-17 refers.\n\nCompliance: Within 400 hours time in service after the effective date of this Directive.\n\nThis Airworthiness Directive becomes effective on 8 August 2002.\n\nBackground: Transport Canada has advised that there have been two reports of severe overheating of overhead bin connectors at the forward end of the passenger compartment on DHC-8 Series 300 aeroplanes fitted with the Heath Techna interior. An electrical burning smell and smoke may result from the overheating of the connectors.\n\n![](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 26 June 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 17 July 2002.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive addressing a specific unsafe condition in specific aircraft. It has not expanded beyond its original purpose of correcting the overheating connector issue."},"complexity_factors":["Single, specific technical requirement with clear manufacturer reference","Limited applicability — only 4 specific aircraft models and a defined serial number range","Simple compliance condition: 'if not previously accomplished'","No nested exceptions or conditional logic beyond the serial number exclusions","Straightforward time-based compliance (400 hours time in service)","Only one cross-reference (to Canadian AD CF-97-17 as a note, not a binding condition)"],"plain_english_summary":"This safety order requires operators and owners of certain Bombardier DHC‑8 Series 300 aircraft (models 301, 311, 314, 315; serials 100 and 202–433, except 271 and 408) to replace faulty overhead‑bin electrical connectors by installing de Havilland Modification 8/2924 per the manufacturer's service bulletin to eliminate an overheating/fire hazard.\n\nThe modification must be completed within 400 flight hours after 8 August 2002; earlier compliance under the prior bulletin satisfies the requirement. It follows Transport Canada reports of smoke and burning smells from overheated connectors."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive is narrowly tailored to correct a specific unsafe condition (overheating connectors in forward overhead bins) on a defined set of aircraft. It requires a single modification per an existing Service Bulletin and recognises earlier compliant installations. There is no evidence in the text that the AD broadens beyond that original safety-fix purpose."},"complexity_factors":["Short, single-issue directive (one mandatory action).","Clear applicability list with a small non-contiguous serial-number range and two serial-number exclusions (adds slight lookup complexity).","Cross-reference to a single external technical document: de Havilland Alert Service Bulletin A8-33-39 Rev. A (dependency on external material for implementation details).","One exception clause: prior installations to the basic issue of the Service Bulletin satisfy the AD.","Reference to related foreign AD (Transport Canada AD CF-97-17).","Simple compliance window (one time limit: 400 hours time in service)."],"plain_english_summary":"**What this directive does (mechanically)**\n\n- It requires operators of certain Bombardier (de Havilland) DHC-8 Series 300 aeroplanes to install a specific wiring/connector modification in the forward overhead bins.  The modification is de Havilland Modification 8/2924 and must be carried out in accordance with de Havilland Alert Service Bulletin A8-33-39 Rev. A (dated 24 October 1997).\n- The requirement applies to DHC-8 Series 300 Models 301, 311, 314 and 315 with serial numbers 100 and 202 through 433, except serial numbers 271 and 408 (see “Applicability”).\n- If the modification was already installed under the basic issue of Service Bulletin A8-33-39, no further action is required (the AD accepts earlier compliant installations).\n- Operators must complete the work within 400 hours time-in-service after the AD’s effective date (the “Compliance” requirement).  The AD became effective 8 August 2002.\n\n**Why it was issued (stated safety concern)**\n\n- Transport Canada reported two instances of severe overheating of overhead-bin electrical connectors near the forward end of the passenger compartment on DHC-8 Series 300 aeroplanes fitted with the Heath Techna interior.  Overheating can cause an electrical burning smell and smoke.  The AD implements the modification intended to correct that unsafe condition.\n\n**Who it affects and who pays**\n\n- Affected parties: operators/owners of the specific DHC-8 Series 300 aircraft listed in the Applicability section.\n- Responsible for action and direct cost: the aircraft operator or owner. Costs include parts, labour, and aircraft downtime to carry out the modification per the Service Bulletin.\n\n**How it changes behaviour and decisions**\n\n- Operators must schedule and perform a specific electrical wiring/connector modification within the 400-hour window or confirm that an earlier compliant modification is already installed.\n- Maintenance organisations must follow the specified Alert Service Bulletin procedures when performing the work.\n\n**Implementation mechanics and administrative notes**\n\n- The AD cross-references and depends on the technical instructions in de Havilland Alert Service Bulletin A8-33-39 Rev. A; compliance requires following those instructions exactly.\n- The AD explicitly recognises installations done to the earlier (basic) issue of the Service Bulletin as meeting the requirement.\n- The AD cites Transport Canada AD CF-97-17 as the related foreign authority action.\n\n**Costs, incentives, trade-offs and risks**\n\n- Direct cost to operators is concentrated and immediate (parts, labour, scheduling/downtime). The safety benefit is concentrated to the aircraft and its passengers/crew.\n- Compliance is mandatory under the airworthiness regulation invoked by the CASA delegate; non-compliance risks regulatory enforcement and continued exposure to the overheating hazard.\n- Implementation risk centers on correct application of the Service Bulletin: incorrect or incomplete installation would leave the risk unmitigated and could require repeat work.\n- Supply or scheduling constraints (parts availability or maintenance capacity) could create short-term operational impacts for operators required to meet the 400-hour deadline.\n\n**Concrete legal citations within the document**\n\n- Applicability: lists the affected models and serial numbers (see “Applicability”).\n- Requirement: install de Havilland Modification 8/2924 per Alert Service Bulletin A8-33-39 Rev. A (see “Requirement”).\n- Compliance: within 400 hours time-in-service after the effective date (see “Compliance”).\n\n(End of summary.)"},"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-dhc-8-87-overhead-bins-electrical-connectors","history":"/api/acts/ad-dhc-8-87-overhead-bins-electrical-connectors/history","analysis":"/api/acts/ad-dhc-8-87-overhead-bins-electrical-connectors/analysis","conflicts":"/api/acts/ad-dhc-8-87-overhead-bins-electrical-connectors/conflicts","importantCases":"/api/acts/ad-dhc-8-87-overhead-bins-electrical-connectors/important-cases","documents":"/api/acts/ad-dhc-8-87-overhead-bins-electrical-connectors/documents"}}