{"id":"F2006B01840","name":"AD/A119/1 Amdt 2 - Tail Rotor Blades","slug":"ad-a119-1-amdt-2-tail-rotor-blades","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41038,"registerId":"commonwealth-F2006B01840-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A119/1 Amdt 2 - Tail Rotor Blades","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)  \nAgusta A119 Series Helicopters\n\nAIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/A119/1 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\nAD/A119/1\n\nAmdt 2\n\n  \n\nTail Rotor Blades 13/2001 DM\n\nApplicability: All A119 helicopters with tail rotor blades part number 109-8132-01-107 installed.\n\nRequirement: 1. Inspect in accordance with Parts I, II and III of Agusta Alert Service Bulletin No. 119-1 Revision A, dated 22 August 2001, until Requirement 3 is accomplished.\n\n    2. Retire tail rotor blades part number 109-8132-01-107 from service in accordance with Part IV of Agusta Alert Service Bulletin No. 119-1 Revision A, dated 22 August 2001, until compliance with Requirement 3.\n\n    3. Replace tail rotor blades part number 109-8132-01-107 with tail rotor blades part number 109-8132-01-111 in accordance with Agusta Alert Service Bulletin No. 119-2, dated 20 September 2001.\n\nNote 1: Tail rotor blades part number 109-8132-01-111 have a retirement life of 1,000 flight hours.\n\nNote 2: Italian ENAC AD 2001-426 refers.\n\nCompliance: 1. For Part I: Before each flight and at each airworthiness check.\n\nFor Part II: Within 10 flight hours after 11 April 2001, and thereafter at intervals not to exceed 10 flight hours; and at each abnormal increase in vibration level.\n\nFor Part III: Within 25 flight hours after 11 April 2001, and thereafter at intervals not to exceed 25 flight hours.\n\n    2. Upon accumulating 50 flight hours.\n\n    3. Before 31 December 2001, unless already accomplished.\n\nThe compliance times of the previous issue of this Directive remain unchanged for Requirements 1 and 2.\n\nThis Directive shall be entered on the Maintenance Release as maintenance required. The visual inspection required by Part I of the Requirement Document may be performed by the Pilot in Command. In which case, a copy of the Requirement Document and this Directive is to be carried in the aircraft.\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\nThis amendment becomes effective on 21 November 2001.\n\nBackground: The Italian ENAC requires inspections for possible cracks on the upper and lower sides of certain tail rotor blades.\n\nAmendment 1 was issued following discovery of a cracked TRB on an Australian Aircraft, prompting ENAC to introduce a 50 hour life on the -107 blade.\n\nAmendment 2 is issued in response to a new ENAC AD which introduces new improved replacement tail rotor blades.\n\nAmendment 1 of this Airworthiness Directive became effective on 7 September 2001\\. The original issue of this Airworthiness Directive became effective on 11 April 2001.\n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 14 November 2001\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 21 November 2001.","sortOrder":0}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"The Directive expands scope from initial inspections to an explicit life-limit and mandatory replacement regime: Amendment 1 imposed a 50‑hour retirement life on the -107 tail rotor blade; Amendment 2 requires retirement of -107 blades and replacement with improved -111 blades (with a 1,000‑hour life) by the specified deadline, shifting the long‑term compliance requirement from inspection-only to component replacement."},"complexity_factors":["Multiple mandated actions (recurrent inspections, retirement, mandatory replacement) with different triggers and timelines","Three inspection regimes referenced (Parts I, II, III of Agusta Alert Service Bulletin No. 119-1 Rev A) with differing intervals (pre-flight/each airworthiness check, 10‑hour, 25‑hour)","Hard retirement limit for the -107 blade (50 flight hours) and separate retirement life for replacement -111 blade (1,000 flight hours)","Mandatory replacement deadline (before 31 December 2001) tied to a service bulletin (Agusta Alert SB No.119-2) rather than an in-text procedure","Cross-reference to foreign authority (Italian ENAC AD) and reliance on manufacturer service bulletins for inspection and replacement procedures","Provision allowing Pilot in Command to perform the Part I visual check, plus a Maintenance Release recording requirement","Amendment history (revokes Amdt 1) and statement that some previous compliance times remain unchanged, adding interpretive steps for operators and maintainers"],"plain_english_summary":"This Airworthiness Directive requires operators of Agusta A119 helicopters fitted with tail rotor blades part number 109-8132-01-107 to carry out specified recurring inspections, to retire -107 blades after 50 flight hours, and to replace them with part number 109-8132-01-111 (which have a 1,000‑hour life) by 31 December 2001. The CASA delegate issued the instruction; affected operators must perform inspections per Agusta Alert Service Bulletins, record compliance on the Maintenance Release, and bear the cost of inspection and replacement."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a targeted amendment to a specific airworthiness directive. It remains focused on its original purpose: addressing safety concerns with A119 helicopter tail rotor blades. Amendment 2 simply updates the technical requirements based on new manufacturer information (improved replacement blades becoming available), without expanding beyond the original safety scope."},"complexity_factors":["Short, single-purpose document (4 pages) focused on one specific mechanical issue","Only 3 main requirements with clear, numbered compliance deadlines","Minimal defined terms (only specific part numbers and document references)","Simple conditional structure (if you have these blades, do these things)","Cross-references limited to two manufacturer service bulletins and one Italian aviation directive","No nested exceptions or complex legal definitions"],"plain_english_summary":"This CASA airworthiness directive requires owners and operators of Agusta A119 helicopters fitted with tail rotor blades P/N 109-8132-01-107 to perform frequent inspections, retire those blades at 50 flight hours, and replace them with improved P/N 109-8132-01-111 blades (1,000‑hour life) by 31 December 2001. It addresses cracking found in-service to prevent tail rotor failure and potential loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a119-1-amdt-2-tail-rotor-blades","history":"/api/acts/ad-a119-1-amdt-2-tail-rotor-blades/history","analysis":"/api/acts/ad-a119-1-amdt-2-tail-rotor-blades/analysis","conflicts":"/api/acts/ad-a119-1-amdt-2-tail-rotor-blades/conflicts","importantCases":"/api/acts/ad-a119-1-amdt-2-tail-rotor-blades/important-cases","documents":"/api/acts/ad-a119-1-amdt-2-tail-rotor-blades/documents"}}