{"id":"F2006B09237","name":"AD/DHC-8/79 - Wardrobe Shelf","slug":"ad-dhc-8-79-wardrobe-shelf","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53131,"registerId":"commonwealth-F2006B09237-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-8/79 Wardrobe Shelf 8/2001","sectionType":"part","heading":"AD/DHC-8/79 Wardrobe Shelf 8/2001","content":"# AD/DHC-8/79 Wardrobe Shelf 8/2001\n\nApplicability: DHC-8 aircraft, Models 102, 103, 106, 201, 202, 301, 311, 314, and 315, with serial\n\nnumbers 452, 464, 490, 506, 508 through 531, and 535.\n\nRequirement: Reinforce the wardrobe attachment by incorporating Modsum 8Q900268 in accordance with the instructions contained in Bombardier Service Bulletin 8-25-311.\n\nNote: Transport Canada AD CF-2001-17 refers.\n\nCompliance: Before 15 June 2002.\n\nThis Airworthiness Directive becomes effective on 9 August 2001.\n\nBackground: The retention system for the upper wardrobe shelf was found to be under strength. This could result in the wardrobe shelf and attached equipment separating from the attachment in the event of an accident or emergency landing.\n\n![](image.002.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 26 June 2001\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 11 July 2001.","sortOrder":1}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow airworthiness directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating a safety fix for a wardrobe shelf attachment."},"complexity_factors":["Very short document (under 300 words)","Only 3 operative sections: Applicability, Requirement, and Compliance","No defined terms section","Single, unambiguous action required (install specific modification)","Clear deadline (before 15 June 2002)","Limited applicability (specific models and serial numbers listed explicitly)","No conditional logic or nested exceptions","Cross-reference to only one external document (Canadian Transport Canada AD CF-2001-17) and one manufacturer document (Service Bulletin)"],"plain_english_summary":"This is a safety order (called an \"Airworthiness Directive\") issued by Australia's aviation safety regulator (CASA) for specific Bombardier DHC-8 aircraft. It requires owners/operators of certain DHC-8 models (specific serial numbers) to strengthen the wardrobe shelf attachment in the passenger cabin. The fix involves following a manufacturer service bulletin (Modsum 8Q900268 / Service Bulletin 8-25-311). The deadline for completing this work is before 15 June 2002. The safety issue is that the original shelf attachment is too weak and could break off during a crash or emergency landing, potentially injuring passengers or blocking evacuation routes."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD is narrowly targeted to correct the identified unsafe condition (under‑strength wardrobe shelf retention) on listed DHC‑8 aircraft by requiring a specified reinforcement modification. It does not expand obligations beyond that safety remedy or add unrelated requirements; therefore the scope aligns with its stated intent."},"complexity_factors":["Narrow applicability: specific DHC‑8 models and enumerated serial numbers limit the population affected (Applicability).","Single technical remedy mandated: incorporation of Modsum 8Q900268 per Bombardier Service Bulletin 8‑25‑311 (Requirement).","Dependency on external technical documentation and parts/procedures from the manufacturer (Requirement / Service Bulletin reference).","Fixed compliance deadline requiring scheduling of maintenance before 15 June 2002 (Compliance).","Issued under CASA authority (subregulation 39.1(1)) and cross‑referenced to Transport Canada AD CF‑2001‑17 (Background / Note).","Operational/admin burden falls on owners/operators to fund, schedule and record the modification.","Safety‑critical nature raises compliance and inspection enforcement considerations despite legal simplicity."],"plain_english_summary":"This AD requires reinforcement of the upper wardrobe shelf attachment on specified Bombardier (de Havilland) DHC‑8 models and serial numbers by incorporating Modsum 8Q900268 per Bombardier Service Bulletin 8‑25‑311. Deadline: before 15 June 2002; effective 9 August 2001.\n\nOwners/operators of the listed aircraft must arrange and pay for the modification and follow the service instructions. CASA issued the AD under subregulation 39.1(1) after finding the shelf retention system under‑strength and at risk of separating in an accident or emergency landing."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-8-79-wardrobe-shelf","history":"/api/acts/ad-dhc-8-79-wardrobe-shelf/history","analysis":"/api/acts/ad-dhc-8-79-wardrobe-shelf/analysis","conflicts":"/api/acts/ad-dhc-8-79-wardrobe-shelf/conflicts","importantCases":"/api/acts/ad-dhc-8-79-wardrobe-shelf/important-cases","documents":"/api/acts/ad-dhc-8-79-wardrobe-shelf/documents"}}