{"id":"F2006B01845","name":"AD/A119/5 - Windshield Wipers","slug":"ad-a119-5-windshield-wipers","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41041,"registerId":"commonwealth-F2006B01845-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (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","sortOrder":0},{"sectionNumber":"AD/A119/5 Windshield Wipers 8/2002 TX","sectionType":"part","heading":"AD/A119/5 Windshield Wipers 8/2002 TX","content":"# AD/A119/5 Windshield Wipers 8/2002 TX\n\nApplicability: A119 helicopters all serial numbers (S/N) up to and including 14022.\n\nRequirement: 1. Helicopters S/N 14017 to 14021 inclusive \\- Deactivate the windshield wipers and install the following placard in accordance with Part I of Agusta Alert Bollettino Tecnico 119-5 dated 22 May 2002:","sortOrder":1},{"sectionNumber":"“WINDSHIELD WIPERS INOPERATIVE”","sectionType":"part","heading":"“WINDSHIELD WIPERS INOPERATIVE”","content":"## “WINDSHIELD WIPERS INOPERATIVE”\n\n    2. Helicopters S/N 14017 to 14021 inclusive \\- Modify the windshield wiper electrical system in accordance with Part II of Alert Bollettino Tecnico 119-5.\n    3. Helicopters S/N up to and including 14022, but excluding S/N 14017, 14018, 14019, 14020 and 14021 \\- Modify the windshield wiper electrical system in accordance with Part III of Alert Bollettino Tecnico 119-5.\n\nNote: Italian Ente Nazionale per l’Aviazone Civile AD 2002-309 refers.\n\nCompliance: For Requirement 1 \\- Within five hours’ time in service after the effective date of this Directive.\n\nFor Requirement 2 \\- Before 31 October 2002.\n\nFor Requirement 3 \\- When relay part number (P/N) T412-DJ1001-C is replaced with relay P/N TDH-8070-1001P and/or T412-2006.\n\nThis Airworthiness Directive becomes effective on 21 June 2002.\n\nBackground: Agusta has advised that during a ground functional test of an A109E helicopter the windshield wiper electrical system overheated due to a system overload. The source of the overload was identified as a partial incompatibility of new timed relays P/N TDH-8070-1001P and/or T412-2006 (identified as K8651 and K8652) with the actual configuration of the windshield wiper electrical system.","sortOrder":2},{"sectionNumber":"Agusta A119 Series Helicopters","sectionType":"part","heading":"Agusta A119 Series Helicopters","content":"## Agusta A119 Series Helicopters\n\nAD/A119/5 (continued)\n\nAs 109E and A119 helicopters are equipped with the same windshield wiper electrical system overheating could also occur on A119 helicopters. This Directive requires initial deactivation of the wiper system followed by modification of the system to eliminate the overheating.\n\n![](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 19 June 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 21 June 2002.","sortOrder":3}],"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":false,"description":"This AD stays within the original safety-focused purpose described in the Background: to eliminate an overheating risk caused by partial incompatibility of certain timed relays with the A119 windshield wiper electrical system. Mechanically it imposes an immediate mitigation (deactivation and placard) and then requires the manufacturer-specified electrical modification. It does not expand the regulatory reach beyond correcting that specific unsafe condition (it applies only to identified serial-numbered aircraft and to relay-replacement events) and therefore has not grown beyond its original purpose."},"complexity_factors":["Short instrument: single AD document with three discrete requirements","Limited applicability scope: A119 helicopters S/N up to and including 14022","Three conditional branches: (a) S/N 14017–14021 immediate deactivation + modification; (b) S/N 14017–14021 modification timing; (c) other S/N up to 14022 modification triggered by relay replacement","External cross-reference to Agusta Alert Bollettino Tecnico 119-5 (Parts I–III) for technical steps","One external note referencing an Italian AD (ENAC AD 2002-309)","Few defined terms; reliance on part numbers and serial numbers rather than layered legal definitions","Simple compliance timing rules (5 hours; date; event-triggered) rather than nested exceptions"],"plain_english_summary":"**What this directive does (mechanically)\n\n- Affects: Agusta A119 helicopters, all serial numbers (S/N) up to and including 14022 (Applicability).\n- Immediate action for S/N 14017–14021: deactivate (turn off) the windshield wipers, fit a visible placard saying “WINDSHIELD WIPERS INOPERATIVE”, and then modify the wiper electrical system per the manufacturer’s instructions (Requirement 1 and 2).\n- Action for other A119s up to S/N 14022 (that are not S/N 14017–14021): modify the wiper electrical system per a different part of the manufacturer’s instructions when certain relay parts are present or replaced (Requirement 3).\n- Timing: the placard/deactivation must be done within five hours’ time in service after the AD takes effect (Compliance for Requirement 1). The modification for S/N 14017–14021 must be done before 31 October 2002 (Compliance for Requirement 2). For the remaining helicopters, the modification is required when relay P/N T412-DJ1001-C is replaced with relay P/N TDH-8070-1001P and/or T412-2006 (Compliance for Requirement 3).\n- Reference instructions: the modifications and placard installation are to follow Agusta Alert Bollettino Tecnico 119-5 (Requirement). The AD also notes an Italian AD on the same issue (Note).\n\nWhy the regulator issued it (stated reason)\n\n- Manufacturer testing showed the wiper electrical system can overheat because certain timed relays (part numbers TDH-8070-1001P and/or T412-2006) are partially incompatible with the existing wiring/configuration. Overheating was observed during ground testing on a related model (A109E), and the A119 uses the same wiper electrical system, so the same risk can exist on A119s (Background).\n\nWho must act and who decides\n\n- Aircraft operators/owners of affected A119 helicopters are required to carry out the deactivation, placard installation and modifications. The Civil Aviation Safety Authority (CASA) delegate issued the AD and therefore sets the mandatory actions (front matter and signature).\n- Work must be done by appropriately authorised maintenance personnel following the Agusta Alert Bollettino Tecnico 119-5 instructions (Requirement).\n\nDirect operational effects and trade-offs (mechanical and economic)\n\n- Immediate safety trade-off: deactivating the windshield wipers removes the overheating hazard but also makes wipers unavailable for flight operations (mechanical effect). Operators will need to manage operations without functioning wipers until the modification is done (Requirement 1 and Compliance).\n- Costs to operators: downtime for each helicopter, labour and parts to modify the electrical system per the Agusta bulletin, administrative time to confirm serial numbers and relay part numbers, and installation of the placard. These are concentrated on owners of affected serial-numbered aircraft (Applicability; Requirement; Compliance).\n- Incentives created: operators are incentivised to avoid installing the incompatible relay parts (P/N TDH-8070-1001P / T412-2006) or to carry out the modification promptly to restore wiper function. Where modification is only required upon replacement of a relay, operators may delay relay changes or source compatible parts instead (Requirement 3; Compliance for Requirement 3).\n- Implementation and compliance risk: correct identification of serial numbers and relay part numbers is necessary; work must follow the manufacturer’s bulletin exactly to resolve the overheating risk. If instructions are not followed, the overheating risk may remain. The AD cross-references Agusta’s bulletin and an Italian AD (Note; Requirement).\n\nCosts versus benefit mechanism (stated benefit)\n\n- Stated benefit: removal of an electrical overload/overheat hazard in the windshield wiper system (Background). The AD chooses an immediate mitigant (deactivation and placard) plus a longer-term fix (system modification) to eliminate the overheating source (Requirement 1–3).\n\nPractical compliance points for operators\n\n- Check helicopter S/N to determine whether immediate deactivation is mandatory (Applicability; Requirement 1).\n- Fit the placard within five hours’ service time after the AD becomes effective if S/N 14017–14021 (Compliance for Requirement 1).\n- Schedule and budget for the modification work per the specified parts of Agusta Alert Bollettino Tecnico 119-5 (Requirement 2 and 3).\n- Monitor maintenance records for any relay replacements that would trigger the modification requirement for other serial numbers (Requirement 3; Compliance for Requirement 3).\n\nKey source references within the AD: Applicability; Requirements 1–3; Compliance sections; Background; Part I–III references to Agusta Alert Bollettino Tecnico 119-5."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope. It addresses a specific safety defect in a specific helicopter model's windshield wiper system as originally intended. There is no evidence of scope creep or expansion beyond the initial safety purpose."},"complexity_factors":["Single-issue directive focused on one mechanical system (windshield wipers)","Only 3 distinct requirements with clear serial number groupings","Simple conditional logic: two distinct applicability groups based on serial number ranges","No defined terms section or extensive cross-referencing to other legislation","Compliance dates are specific and unambiguous (hours in service, calendar date, or event-triggered)","References only one external technical document (Agusta Alert Bollettino Tecnico 119-5) and one foreign aviation directive","Total length is approximately one page"],"plain_english_summary":"This mandatory CASA safety order requires owners/operators of Agusta A119 helicopters (serials up to 14022) to fix a hazardous windshield-wiper electrical fault: replacement relays can overheat with the existing wiring. Aircraft 14017–14021 must have wipers deactivated immediately and placarded “WINDSHIELD WIPERS INOPERATIVE,” with a wiring modification by 31 October 2002; other affected A119s must have wiring modified when specified relays are replaced. The measure prevents overheating, fire, or equipment failure observed on a related A109E design."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a119-5-windshield-wipers","history":"/api/acts/ad-a119-5-windshield-wipers/history","analysis":"/api/acts/ad-a119-5-windshield-wipers/analysis","conflicts":"/api/acts/ad-a119-5-windshield-wipers/conflicts","importantCases":"/api/acts/ad-a119-5-windshield-wipers/important-cases","documents":"/api/acts/ad-a119-5-windshield-wipers/documents"}}