{"id":"F2006B05207","name":"AD/CESSNA 205/22 Amdt 1 - Horizontal Stabilizer Front Spar","slug":"ad-cessna-205-22-amdt-1-horizontal-stabilizer-front-spar","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45432,"registerId":"commonwealth-F2006B05207-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 205/22 Amdt 1 - Horizontal Stabilizer Front Spar","content":"![](image.001.png)\n\n![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nOn the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/CESSNA 205/22 and issues the following AD under subregulation 39.1 (1) of CASR 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![](image.001.png)\n\nCessna 205 (210-5) Series Aeroplanes\n\nAD/CESSNA 205/22\n\nAmdt 1\n\n  \nHorizontal Stabilizer Front Spar 9/2004\n\nApplicability: All models of Cessna 205 aircraft.\n\nRequirement: Visually inspect the front and rear faces of horizontal stabilizer front spar assembly centre section for cracks around the cut-out in the front spar web. Refer to Figure 1 below. Any cracks in the front spar web must be repaired before further flight, and a defect report must be submitted.\n\nNote 1: Access can be achieved by the removal of the fillet fairing. The front face of the front spar is easily seen. The rear face may be seen via a hole in the upper surface of the horizontal stabilizer using an inspection mirror and torch.\n\nNote 2: This inspection may require some experimenting with lights and mirrors to obtain some certainty in the results of the inspection. The inspection would be much easier to conduct with the use of a borescope.\n\n![](image.002.png)\n\nCessna 205 (210-5) Series Aeroplanes\n\nAD/CESSNA 205/22 Amdt 1 (continued)\n\nCompliance: a. For aircraft with less than 10000 hours time in service, inspect before exceeding 10000 hours total time in service, and thereafter at intervals not exceeding 110 hours time in service.\n\nb. For aircraft with 10000 or more hours time in service, inspect before 18 March 2002, and thereafter at intervals not exceeding 110 hours time in service.\n\nThis Airworthiness Directive becomes effective on 6 March 2002.\n\nBackground: Reports have been received of cracking of the horizontal stabilizer front spar on Australian registered Cessna 210s. Both front and rear spars must be serviceable for the horizontal stabilizer to carry ultimate load. The front spar forms part of the horizontal stabilizer’s primary load path, and loss of strength in this area could be catastrophic.\n\nIt should be noted that this Airworthiness Directive mandates an inspection requirement already stated in the manufacturer’s maintenance data.\n\nThis amendment is issued to increase the recurrent compliance interval from 100 hours to 110 hours time in service to allow the inspections required by this Airworthiness Directive to be aligned with scheduled maintenance.\n\n![](image.003.png)  \n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority 23 July 2004\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 11 August 2004.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This amendment alters the compliance cadence by increasing the recurrent inspection interval from 100 hours to 110 hours to better align with scheduled maintenance (Background; Compliance). Applicability (all Cessna 205 models), the mandatory inspection/repair-before-flight requirement, reporting obligation, and effective date remain in force; the previous AD is revoked and replaced by this amended AD."},"complexity_factors":["Universal applicability to all Cessna 205 models (broad scope of affected operators).","Two-tiered compliance threshold based on total hours in service (<10,000 vs ≥10,000 plus a historic cut‑off date).","Strict operational requirement: any detected crack must be repaired before further flight and a defect report submitted (immediate grounding and administrative burden).","Practical inspection difficulty: rear face inspection may require mirrors, borescope, or removal of fairing (technical/tooling burden).","Amendment changes recurrence (100 → 110 hours) and revokes prior AD, requiring operators to note the updated interval and effective date.","Legal enforcement under CASR subreg 39.1(1) creates regulatory compliance risk for operators who fail to meet intervals or reporting."],"plain_english_summary":"This AD requires owners/operators of all Cessna 205 aircraft to visually inspect the horizontal stabilizer front‑spar web for cracks, repair any cracks before further flight, and submit a defect report. Inspections must be carried out before 10,000 total hours (or by 18 March 2002 if already over) and then at intervals not exceeding 110 hours. Effective 6 March 2002.\n\nCosts fall on owners/operators for inspection, repair and reporting; CASA’s delegate enforces the requirement under CASR subreg 39.1(1). The amendment increases the recurrent interval from 100 to 110 hours to align inspections with scheduled maintenance (Background; Compliance)."},"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":"The legislation maintains its original narrow scope — a specific safety inspection for a specific aircraft component. The amendment does not expand applicability or add new requirements; it merely adjusts the compliance interval timing."},"complexity_factors":["Single, clearly defined applicability (one aircraft model series)","Straightforward two-tier compliance schedule based only on flight hours","Single inspection requirement with clear repair and reporting obligations","Minimal defined terms (only standard aviation terminology like 'time in service')","No cross-references to other legislation or complex conditional logic","Background section provides clear safety rationale without legal obfuscation","Amendment makes only one simple change (100 to 110 hours interval)"],"plain_english_summary":"This AD mandates visual inspections of the horizontal stabilizer front spar on all Cessna 205s registered in Australia to detect cracks around the web cut-out; any cracks must be repaired before flight and reported. It applies to owners, operators, maintenance organisations and pilots to prevent catastrophic tail failure.\n\nThe amendment extends the inspection interval to every 110 flight hours (from 100), aligning checks with scheduled maintenance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-205-22-amdt-1-horizontal-stabilizer-front-spar","history":"/api/acts/ad-cessna-205-22-amdt-1-horizontal-stabilizer-front-spar/history","analysis":"/api/acts/ad-cessna-205-22-amdt-1-horizontal-stabilizer-front-spar/analysis","conflicts":"/api/acts/ad-cessna-205-22-amdt-1-horizontal-stabilizer-front-spar/conflicts","importantCases":"/api/acts/ad-cessna-205-22-amdt-1-horizontal-stabilizer-front-spar/important-cases","documents":"/api/acts/ad-cessna-205-22-amdt-1-horizontal-stabilizer-front-spar/documents"}}