{"id":"F2006B08110","name":"AD/CESSNA 210/61 Amdt 2 - Wing Main Spar Carry-Through Section","slug":"ad-cessna-210-61-amdt-2-wing-main-spar-carry-through-section","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115220,"registerId":"commonwealth-F2006B08110-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 210/61 Amdt 2 - Wing Main Spar Carry-Through Section","content":"![](image.001.png)\n\n![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/CESSNA 210/61 Amdt 1 and issues the following 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![](image.001.png)\n\nCessna 210 Series Aeroplanes\n\nAD/CESSNA 210/61\n\nAmdt 2\n\n  \nWing Main Spar Carry-Through Section 4/2001\n\nApplicability: All models with cantilever (unstrutted) wings.\n\nRequirement: 1. Gain access to the upper and lower surfaces of the wing carry through forging.\n\n2. Inspect the whole wing carry-through forging for any indications of corrosion. Repairs to the wing carry-through forging shall be in accordance with a scheme approved by the Authority.\n\nCompliance: For the initial inspection, upon accumulating 10 years time in service since manufacture. Thereafter at intervals not to exceed 6 years, or, if the spar carry- through has been subjected to an approved corrosion protection scheme, at intervals not to exceed 12 years.\n\nThis amendment becomes effective on 19 April 2001.\n\nBackground: There have been reports of corrosion in the wing spar carry-through forging on a number of aircraft. In two cases the corrosion was sufficiently advanced to adversely affect the structural integrity of the wing.\n\nAmendment 1 reflected the reported results from the initial issue of this Directive which enabled a reduction in the initial compliance time and an extension of the repeat inspection period.\n\nAmendment 2 is issued to clarify the compliance requirements from the previous issue. This amendment does not impose any further technical requirements.\n\nCessna 210 Series Aeroplanes\n\nAD/CESSNA 210/61 Amdt 2 (Continued)\n\n![](image.002.png)  \nThe Original issue of this Airworthiness Directive became effective on 20 April 1989. Amendment 1 of this Airworthiness Directive became effective on 4 October 1990.\n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 5 March 2001\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 21 March 2001.","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":"The legislation maintains its original narrow scope — safety inspections for a specific aircraft type's wing spar. Amendment 2 explicitly states it imposes no further technical requirements, confirming scope has not expanded beyond the original corrosion-monitoring purpose."},"complexity_factors":["Single, clearly defined applicability (Cessna 210 series with cantilever wings)","Straightforward three-step requirement structure (access, inspect, repair if needed)","Simple temporal compliance formula (10 years initial, then 6 or 12 year intervals)","No cross-references to other legislation or regulations beyond the enabling power (CAR 1998 subreg 39.1(1))","Only one defined term implied ('Authority' refers to CASA)","No nested conditions or exceptions — the 12-year interval is an alternative, not an exception to an exception","Document length is approximately one page"],"plain_english_summary":"This CASA safety order covers Cessna 210 unstrutted-wing aeroplanes and requires periodic inspections of the wing carry‑through forging for corrosion on its upper and lower surfaces, with repairs using approved methods if corrosion is found. Inspections start after 10 years, then every 6 years (or 12 with approved anti‑corrosion treatment). Amendment 2 (Apr 2001) only clarifies when inspections are due, not technical requirements."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 2 clarifies the compliance timing and procedures but explicitly does not add further technical requirements. The directive continues to apply to the same population (all cantilever‑wing Cessna 210s) and maintains the same inspection and repair obligations (Background; Applicability; Requirement; Compliance)."},"complexity_factors":["Applicability scope is broad but simple: applies to all Cessna 210 models with cantilever (unstrutted) wings (Applicability).","Clear, mechanical requirement to gain access and inspect upper and lower surfaces of the wing carry‑through forging (Requirement 1) — practical work for maintenance providers/owners.","Repairs must follow a scheme approved by the Authority, creating an administrative approval step and potential delay/cost (Requirement 2).","Compliance timing has a small conditional structure: initial inspection at 10 years from manufacture, then every 6 years, or every 12 years if an approved corrosion protection scheme has been applied (Compliance) — creates record/eligibility checks.","Legal basis and enforcement come from revocation/issuance under subregulation 39.1(1) of CAR 1998 and the CASA delegate's authority, indicating administrative discretion in approval and enforcement (preamble).","Amendment history and clarification: Amendment 2 clarifies compliance requirements without adding technical obligations, so implementers must follow the clarified timing but not new procedures (Background).","Operational costs fall on owners/operators: access, inspection labour, and any approved repairs; responsibility for demonstrating an approved protection scheme affects interval eligibility (Requirement/Compliance)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Cessna 210 series aeroplanes with cantilever (unstrutted) wings to access and inspect the wing main spar carry‑through forging for corrosion and to carry out any repairs under a scheme approved by the aviation authority. Inspections start at 10 years from manufacture and repeat every 6 years (or every 12 years if an approved corrosion protection scheme is used). The directive responds to reported corrosion that in some cases affected wing structural integrity."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-61-amdt-2-wing-main-spar-carry-through-section","history":"/api/acts/ad-cessna-210-61-amdt-2-wing-main-spar-carry-through-section/history","analysis":"/api/acts/ad-cessna-210-61-amdt-2-wing-main-spar-carry-through-section/analysis","conflicts":"/api/acts/ad-cessna-210-61-amdt-2-wing-main-spar-carry-through-section/conflicts","importantCases":"/api/acts/ad-cessna-210-61-amdt-2-wing-main-spar-carry-through-section/important-cases","documents":"/api/acts/ad-cessna-210-61-amdt-2-wing-main-spar-carry-through-section/documents"}}