{"id":"F2006B01846","name":"AD/A119/6 Amdt 1 - Tail Rotor Blades - 2","slug":"ad-a119-6-amdt-1-tail-rotor-blades-2","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41042,"registerId":"commonwealth-F2006B01846-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A119/6 Amdt 1 - Tail Rotor Blades - 2","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/A119/6 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\nAgusta A119 Series Helicopters\n\nAD/A119/6\n\nAmdt 1\n\n  \n\nTail Rotor Blades - 2 9/2002 TX\n\nApplicability: All Agusta A119 Series helicopters\n\nRequirement: 1. For helicopters fitted with tail rotor hub and blade assembly\n\nP/N 109-8131-02-149, install a placard in accordance with Part I of Agusta Alert Service Bulletin 119-6 Revision A, dated 12 July 2002.\n\n    2. For all Agusta A119 aircraft, inspect tail rotor blades in accordance with parts II and III of Agusta Alert Service Bulletin 119-6 Revision A, dated 12July 2002.\n\n    3. For helicopters fitted with tail rotor hub and blade assembly\n\nP/N 109-8131-02-149, action in accordance with Part IV of Agusta Alert Service Bulletin 119-6, Revision A, dated 12 July 2002.\n\nThis Airworthiness Directive shall be entered on the Maintenance Release as maintenance required. The visual inspection required by Part II of Agusta Alert Service Bulletin 119-6, Revision A may be performed and certified by the Pilot in Command who has been trained to do the inspection by an appropriately qualified person. In this case, a copy of the service bulletin and this Directive are to be carried in the aircraft.\n\nNote: Italian ENAC AD 2002-367 refers.\n\nCompliance: 1. Before further flight after the effective date of this AD.\n\n    2. (a) Part II \\- each airworthiness check and prior to each flight.\n\n(b) Part III \\- Every 25 operating hours from the effective date of this AD and whenever any abnormal increase in Tail Rotor vibration occurs.\n\n    3. No later than 30 September 2002.\n\nThis amendment becomes effective on 18 July 2002.\n\nAgusta A119 Series Helicopters\n\nAD/A119/6 Amdt 1 (continued)\n\nBackground: This directive is issued following an ENAC AD which requires repetitive inspections of the part number 109-8132-01-111 tail rotor blades in response to an incident of a tail rotor blade fracture and consequent emergency landing of the helicopter. A tail rotor grip modification is also specified for helicopters with the P/N 109-8131-02-149 tail rotor hub and blade assembly fitted. A placard is also fitted to reduce Vne by 30 KIAS until the requirements of Part IV of Agusta Alert Service Bulletin 119-6, Revision A are complied with, upon which the placard may be removed.\n\nThe original issue of this Airworthiness Directive became effective on 3 July 2002.\n\n![](image.002.jpeg)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 17 July 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 18 July 2002.","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":"This amendment revokes the original AD/A119/6 and reissues requirements that explicitly combine an immediate operational limitation (temporary placard and reduced Vne), repetitive inspections, and a mandatory grip modification for specified hub/blade assemblies. It also clarifies that a trained Pilot‑in‑Command may perform specified inspections and requires Maintenance Release entry. Those changes shift ongoing inspection, equipment and training obligations onto operators (see Requirement, Compliance, Background)."},"complexity_factors":["Multiple mandated actions with part‑number specificity (Requirement: parts and assemblies referenced).","Layered compliance timing: before further flight, each pre‑flight/airworthiness check, every 25 operating hours, and a hard date for modification (Compliance).","Dependence on external technical documents and foreign AD: Agusta Alert Service Bulletin 119‑6 Rev A and Italian ENAC AD (Requirement; Note; Background).","Allows Pilot‑in‑Command to perform/certify specified visual inspections after training, creating non‑standard maintenance delegation and training needs (Requirement).","Administrative obligation to enter the AD on the Maintenance Release and to carry documents in‑aircraft where PIC inspection is authorised (Requirement).","Safety‑critical technical work (tail‑rotor grip modification and blade inspections) requiring qualified maintenance intervention and parts control (Background; Requirement).","Revocation and reissue of a prior AD creates a transition that may affect compliance tracking and record‑keeping (opening paragraph; Background)."],"plain_english_summary":"This directive requires operators of Agusta A119 helicopters to carry out mandated visual inspections, fit a temporary speed‑limit placard, and implement a specified tail‑rotor grip modification to address a reported tail‑rotor blade fracture.\n\nCASA’s delegate enforces these actions by reference to an Agusta Alert Service Bulletin; work must be recorded on the Maintenance Release and certain inspections may be performed and certified by a trained Pilot‑in‑Command, creating ongoing inspection, equipment and training costs for operators."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is an amendment (Amdt 1) to an existing Airworthiness Directive that was originally issued 15 days earlier (3 July 2002). The scope remains tightly focused on the original safety issue — tail rotor blade fractures on Agusta A119 helicopters. The amendment appears to refine or clarify the original requirements rather than expand the scope to new aircraft types or unrelated systems."},"complexity_factors":["Multiple part-number-specific requirements create conditional applicability (P/N 109-8131-02-149 vs all other aircraft)","Cross-reference to external technical document (Agusta Alert Service Bulletin 119-6 Revision A) without reproducing its contents","Nested compliance timelines with three different deadlines (before further flight, each airworthiness check/each flight, 25 operating hours/30 September 2002)","Exception allowing pilot-performed inspection with specific conditions (training requirement, documentation carriage)","Reference to Italian aviation authority directive (ENAC AD 2002-367) indicating international regulatory coordination"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order for aircraft. It applies to all **Agusta A119 series helicopters** and addresses a serious safety problem with **tail rotor blades**.\n\n**What happened:** A tail rotor blade broke on one of these helicopters, forcing an emergency landing. This AD is issued to prevent that happening again.\n\n**What must be done:**\n- **Placard installation:** Helicopters with a specific tail rotor part (P/N 109-8131-02-149) must have a warning label installed that reduces their maximum speed (Vne) by 30 knots until modifications are complete.\n- **Inspections:** All A119 helicopters need regular tail rotor blade inspections — some before every flight, others every 25 flight hours or whenever unusual vibration is noticed.\n- **Modification:** Helicopters with that specific part number must eventually undergo a modification to the tail rotor grip assembly.\n\n**Who can do the work:** Most inspections and modifications must be done by licensed aircraft maintenance engineers. However, the basic visual inspection (Part II) can be done by the **Pilot in Command** (the pilot flying the helicopter) if they've been trained by a qualified person. If a pilot does this inspection, they must carry a copy of this directive and the service bulletin in the aircraft.\n\n**When it takes effect:** The directive became active on **18 July 2002**, with different deadlines for different actions — some immediate, others due by 30 September 2002.\n\n**Why it matters:** Tail rotor failures can cause helicopters to spin uncontrollably and crash. This directive forces operators to check for cracks or damage before they cause catastrophic failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a119-6-amdt-1-tail-rotor-blades-2","history":"/api/acts/ad-a119-6-amdt-1-tail-rotor-blades-2/history","analysis":"/api/acts/ad-a119-6-amdt-1-tail-rotor-blades-2/analysis","conflicts":"/api/acts/ad-a119-6-amdt-1-tail-rotor-blades-2/conflicts","importantCases":"/api/acts/ad-a119-6-amdt-1-tail-rotor-blades-2/important-cases","documents":"/api/acts/ad-a119-6-amdt-1-tail-rotor-blades-2/documents"}}