{"id":"F2006B09230","name":"AD/DHC-8/72 - Flight Deck Structural Angle P/N 85310497-101/103","slug":"ad-dhc-8-72-flight-deck-structural-angle-p-n-85310497-101-103","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53113,"registerId":"commonwealth-F2006B09230-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-8/72 - Flight Deck Structural Angle P/N 85310497-101/103","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  \n![](image.002.png)  Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes\n\n \n\n# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  For 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\n \n\n# AD/DHC-8/72 Flight Deck Structural Angle P/N 85310497-101/103\n\n\n11/2000\n\n \n\nApplicability: Models 102, 103, and 301, serial numbers 003 through 146, excluding serial numbers\n\n064 and 137.\n\n \n\nRequirement: Repair flight deck structural angle in accordance with Bombardier Service Bulletin 8- 53-75 which provides instructions for incorporation of Repair RD8-53-3620.\n\n \n\nNote: Transport Canada AD CF-2000-21 refers.\n\n \n\nCompliance: Before 15 March 2002, unless already accomplished.\n\n \n\nThis Airworthiness Directive becomes effective on 2 November 2000.\n\n \n\nBackground: An incident of uncommanded roll control disconnect occurred on landing in turbulent conditions. Investigation revealed that a structural angle interfered with the clevis of the roll control disconnect cable, resulting in disconnection of the roll control.\n\n![](image.003.png)  \n\n\n \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 13 September 2000\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n![](image.002.png)  \n\n\nThe above AD is notified in the Commonwealth of Australia Gazette on 4 October 2000.\n\n \n\n \n\n \n","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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete airworthiness directive addressing a specific identified safety defect in specific aircraft. It has not expanded beyond its original purpose of mandating a particular structural repair."},"complexity_factors":["Single, specific technical requirement with no conditional logic or exceptions","Only 3 defined applicability criteria (model numbers, serial number range, two exclusions)","No cross-references to other legislation or regulations beyond a single note about a Canadian equivalent directive","Straightforward compliance deadline with simple 'unless already accomplished' exception","Document is essentially a one-page safety bulletin with minimal legal machinery"],"plain_english_summary":"CASA requires owners/operators and maintainers of certain Bombardier Dash 8 (DHC-8) turboprops (specific serial numbers in early production) to fit a mandated repair kit to correct a cockpit structural angle that can foul the roll-control disconnect cable. An incident of uncommanded roll-control disconnect during turbulence prompted the order.\n\nThe fix — per Bombardier Service Bulletin and Repair RD8-53-3620 — must be completed before 15 March 2002 to prevent potential loss of roll control."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD implements the manufacturer repair instruction for a defined subset of DHC‑8 aircraft and imposes a compliance deadline; it does not expand requirements beyond the specified repair or the listed serial numbers (Applicability; Requirement; Compliance)."},"complexity_factors":["Narrow, explicit applicability by model and serial number reduces scope and complexity (Applicability).","Single, mandatory corrective action tied to an external manufacturer document increases reliance on that Service Bulletin for technical details (Requirement: Bombardier Service Bulletin 8‑53‑75).","Clear compliance deadline and effective date simplify scheduling but impose a fixed operational window for affected operators (Compliance; Effective date).","Reference to a foreign regulator's AD (Transport Canada AD CF‑2000‑21) adds a cross‑reference but not substantive additional requirements (Note).","The AD prescribes a repair (not an inspection), which is an intervening maintenance action with associated logistical and execution burdens for operators (Requirement)."],"plain_english_summary":"This Airworthiness Directive requires operators of Bombardier (De Havilland) DHC‑8 models 102, 103 and 301 (serial numbers 003–146, excluding 064 and 137) to repair a flight‑deck structural angle in accordance with Bombardier Service Bulletin 8‑53‑75 (Repair RD8‑53‑3620). CASA issued the AD under CAR subreg 39.1(1) with compliance required before 15 March 2002 to address an incident where the structural angle interfered with the roll‑control disconnect clevis, causing an uncommanded roll disconnect on landing."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-8-72-flight-deck-structural-angle-p-n-85310497-101-103","history":"/api/acts/ad-dhc-8-72-flight-deck-structural-angle-p-n-85310497-101-103/history","analysis":"/api/acts/ad-dhc-8-72-flight-deck-structural-angle-p-n-85310497-101-103/analysis","conflicts":"/api/acts/ad-dhc-8-72-flight-deck-structural-angle-p-n-85310497-101-103/conflicts","importantCases":"/api/acts/ad-dhc-8-72-flight-deck-structural-angle-p-n-85310497-101-103/important-cases","documents":"/api/acts/ad-dhc-8-72-flight-deck-structural-angle-p-n-85310497-101-103/documents"}}