{"id":"F2006B07047","name":"AD/SM-205/25 Amdt 1 - Landing Gear Actuator Attaching Fork","slug":"ad-sm-205-25-amdt-1-landing-gear-actuator-attaching-fork","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48772,"registerId":"commonwealth-F2006B07047-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-205/25 Amdt 1 - Landing Gear Actuator Attaching Fork","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n![](image.002.png)  \nSIAI Marchetti S205 and S208 Series Aeroplanes\n\nAIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.003.png)![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/SM-205/25 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\nAD/SM-205/25\n\nAmdt 1\n\n  \nLanding Gear Actuator Attaching Fork 3/2001 DM\n\nApplicability: All Model S205-18/R, S205-20/R, S205-22/R, S208 and S208A aircraft.\n\nRequirement: Carry out the inspection/modification called for by Aermacchi Alert Service Bulletin 205B-62.\n\nNote: ENAC-RAI AD 2001-004 refers.\n\nCompliance: Within 10 hours time in service after the 7 February 2001, unless already accomplished.\n\nThis amendment becomes effective on 7 February 2001.\n\nBackground: The RAI required an inspection of the main landing gear actuator attaching fork for fatigue cracking, failure of which would render inoperative both the normal and the emergency gear down functions.\n\nAmendment 1 is issued in response to a new ENAC-RAI AD which requires further inspection and introduces a new clevis rod end made of steel.\n\n![Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority](image.004.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 31 January 2001\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 7 February 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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Yes. The original AD required inspection of the main landing gear actuator attaching fork for fatigue cracking. Amendment 1 expands the directive by requiring further inspection actions and by introducing a replacement steel clevis rod end; it revokes the prior AD and issues the amended AD (AD/SM-205/25 Amdt 1)."},"complexity_factors":["References an external non‑regulatory document (Aermacchi Alert Service Bulletin 205B-62) for required work, creating dependency on another source.","Short compliance window (within 10 hours TIS after 7 February 2001) imposes urgent operational and scheduling pressure.","Applies to a defined set of specific aircraft models (S205-18/R, S205-20/R, S205-22/R, S208, S208A) — narrow scope but high safety impact.","Amendment revokes and replaces the prior AD and introduces a mandatory new steel clevis rod end, affecting parts procurement and maintenance practices.","Safety‑critical inspection for fatigue cracking that can disable both normal and emergency systems increases consequences of non‑compliance.","Issued under CASA delegated power (subregulation 39.1(1) of CAR 1998) — administrative discretion in revocation/reissue noted."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of SIAI Marchetti S205 and S208 series aircraft to inspect and, if necessary, modify the main landing‑gear actuator attaching fork per Aermacchi Alert Service Bulletin 205B‑62, within 10 hours time‑in‑service after 7 February 2001. It targets fatigue cracking that could disable both normal and emergency gear‑down. Amendment 1 adds further inspection steps and mandates a new steel clevis rod end; operators are responsible for carrying out the work and sourcing replacement parts where required."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment stays tightly focused on its original purpose: addressing a specific mechanical defect in a defined aircraft type. Amendment 1 simply updates the technical requirements based on new information from Italian regulators (adding a new steel replacement part), without expanding to other aircraft systems or models."},"complexity_factors":["Very short document (under 300 words)","Only 5 defined aircraft models in applicability section","Single requirement referencing external technical document (Service Bulletin)","Simple compliance deadline (10 hours time-in-service from effective date)","No nested exceptions or conditional logic","Clear background explaining safety rationale","Straightforward amendment structure replacing previous AD"],"plain_english_summary":"This AD mandates immediate inspection and modification of the main landing‑gear actuator attaching fork on certain SIAI Marchetti S205 and S208 series aircraft because fatigue cracking could cause complete landing‑gear failure. Owners/operators must follow Aermacchi Alert Service Bulletin 205B‑62, including installing a steel clevis rod end, within 10 flight hours after 7 February 2001 (unless already done). Issued by CASA, it replaces the prior directive."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-205-25-amdt-1-landing-gear-actuator-attaching-fork","history":"/api/acts/ad-sm-205-25-amdt-1-landing-gear-actuator-attaching-fork/history","analysis":"/api/acts/ad-sm-205-25-amdt-1-landing-gear-actuator-attaching-fork/analysis","conflicts":"/api/acts/ad-sm-205-25-amdt-1-landing-gear-actuator-attaching-fork/conflicts","importantCases":"/api/acts/ad-sm-205-25-amdt-1-landing-gear-actuator-attaching-fork/important-cases","documents":"/api/acts/ad-sm-205-25-amdt-1-landing-gear-actuator-attaching-fork/documents"}}