{"id":"F2006B05259","name":"AD/CESSNA 206/53 - Horizontal Stabiliser Attachment Brackets","slug":"ad-cessna-206-53-horizontal-stabiliser-attachment-brackets","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45611,"registerId":"commonwealth-F2006B05259-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)![](image.001.png)AIRWORTHINESS DIRECTIVE\n\n![](image.001.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\nCessna 206 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/CESSNA 206/53 Horizontal Stabiliser A","sectionType":"part","heading":"AD/CESSNA 206/53 Horizontal Stabiliser Attachment Brackets 7/2001","content":"# AD/CESSNA 206/53 Horizontal Stabiliser Attachment Brackets 7/2001\n\nDM\n\nApplicability: Model Serial Numbers\n\n206H 20608001 through 20608053, 20608055 through 20608086,\n\n20608088 and 20608089\n\nT206H T20608001 through T20608093, T20608095 through T20608145, T20608147, T20608149, T20608150, T20608152, T20608156, T20608157, and T20608160.\n\nRequirement: Visually inspect the left and right horizontal stabiliser attachment reinforcement brackets, part number 1232624-1, for the existence of seam welds along both the lower inboard and outboard wall/flange; in accordance with the Accomplishment Instructions in Cessna Service Bulletin SB00-55-03, dated 28 August 2000, and the applicable maintenance manual.\n\nIf no seam welds are found during inspection of left and right brackets, replace deficient bracket(s) with a new or serviceable part number 1232624-1 attachment reinforcement bracket that complies with the requirement of this Directive.\n\nNote: FAA AD 2001-09-06 Amdt 39-12211 refers.\n\nCompliance: Within 20 hours time in service after 23 May 2001, unless already accomplished.\n\nThis Airworthiness Directive becomes effective on 23 May 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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope remains targeted to correcting the unsafe condition on the identified bracket and serial-numbered fleet. The instrument confines action to inspection and replacement of P/N 1232624-1 brackets on the listed aircraft (Applicability; Requirement; Compliance) and does not broaden to other parts or models."},"complexity_factors":["Narrow applicability: applies only to specific Cessna 206 and T206H serial numbers (Applicability).","Single-component focus: targets one part number (1232624-1) and a specific defect (missing seam welds) (Requirement).","Technical specificity: inspection must check seam welds on lower inboard and outboard wall/flange—requires correct interpretation of the part geometry (Requirement).","External references: compliance tied to Cessna Service Bulletin SB00-55-03 and the maintenance manual, creating dependency on external documents (Requirement).","Short compliance window: inspection required within 20 hours time in service from effective date, increasing scheduling/operational impact on operators (Compliance).","Remedy obligation: operators must replace deficient brackets with new or serviceable parts that comply with the AD—creates direct parts and labour costs for operators (Requirement).","Regulatory hook: issued under CAR 1998 subregulation 39.1(1), so enforcement and legal duty rest with the CASA delegate and operators respectively (preamble).","Low technical complexity of the task (visual inspection) but potential logistic complexity if replacement parts are scarce."],"plain_english_summary":"Requires a visual inspection of the left and right horizontal stabiliser attachment reinforcement brackets (P/N 1232624-1) on the listed Cessna 206/T206H serial numbers and replacement of any bracket missing seam welds. Affects owners/operators of those aircraft, who must complete the inspection and any replacements within 20 hours time-in-service; the stated purpose is to correct an identified unsafe condition (see FAA AD reference)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with narrow, specific scope targeting a known manufacturing defect in particular aircraft serial numbers. The scope remains tightly focused on the original safety issue."},"complexity_factors":["Single, specific mechanical inspection requirement with clear alternative action (replacement)","Only 2 aircraft models affected with explicitly listed serial numbers","Single cross-reference to FAA AD 2001-09-06 (informational only)","No nested conditions or exceptions — straightforward if/then logic","Short document (approximately 200 words) with minimal defined terms","Clear compliance deadline with simple time-in-service calculation"],"plain_english_summary":"This safety order requires owners/operators of specified Cessna 206H and T206H aircraft to inspect left and right horizontal‑tail attachment brackets for missing seam welds, following Cessna Service Bulletin SB00‑55‑03, and to replace any defective bracket with a new or airworthy part. It is mandatory for the listed serial numbers and must be done within 20 flight hours after 23 May 2001 to prevent possible tail‑attachment failure and loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-206-53-horizontal-stabiliser-attachment-brackets","history":"/api/acts/ad-cessna-206-53-horizontal-stabiliser-attachment-brackets/history","analysis":"/api/acts/ad-cessna-206-53-horizontal-stabiliser-attachment-brackets/analysis","conflicts":"/api/acts/ad-cessna-206-53-horizontal-stabiliser-attachment-brackets/conflicts","importantCases":"/api/acts/ad-cessna-206-53-horizontal-stabiliser-attachment-brackets/important-cases","documents":"/api/acts/ad-cessna-206-53-horizontal-stabiliser-attachment-brackets/documents"}}