{"id":"F2005L02843","name":"AD/DO 228/3 - Windshield Wash System","slug":"ad-do-228-3-windshield-wash-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":37847,"registerId":"commonwealth-F2005L02843-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Dornier 228 Series Aeroplanes","sectionType":"division","heading":"Dornier 228 Series Aeroplanes","content":"### Dornier 228 Series Aeroplanes\n\n| AD/DO 228/3 | Windshield Wash System | 11/2005 |\n| ----------- | ---------------------- | ------- |\n\n| Applicability: | All Dornier 228 series aeroplanes, equipped with a windshield wash system (option 3109) and spray nozzle assemblies part number (P/N) A-926054A00C installed.                                                                                                                                                        |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Unless previously accomplished, modify the windshield wash system in accordance with Fairchild Dornier GmbH Service Bulletin SB-228-235 Revision 1 dated18 December 2001, by installing spray nozzles in protective housing and changing the electrical wiring.                                                      |\n|                | Note: LBA AD 1999-030/3 refers.                                                                                                                                                                                                                                                                                      |\n| Compliance:    | Within six months after the effective date of this Directive.                                                                                                                                                                                                                                                        |\n|                | This Airworthiness Directive becomes effective on 27 October 2005.                                                                                                                                                                                                                                                   |\n| Background:    | The German Luftfahrt-Bundesamt (LBA) has been advised of instances where smoke in the cockpit has been caused by overheating of the windshield spray nozzle heating elements before flight.This Directive requires the modification of the windshield wash system to prevent smoke and possible fire in the cockpit. |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n16 September 2005","sortOrder":0},{"sectionNumber":"AD/DO 228/3","sectionType":"part","heading":"AD/DO 228/3","content":"## AD/DO 228/3","sortOrder":1},{"sectionNumber":"Windshield Wash System","sectionType":"part","heading":"Windshield Wash System","content":"## Windshield Wash System","sortOrder":2},{"sectionNumber":"11/2005","sectionType":"part","heading":"11/2005","content":"## 11/2005","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete safety directive addressing a specific mechanical defect. It has not expanded beyond its original purpose of mandating a specific modification to prevent cockpit smoke/fire hazards."},"complexity_factors":["Single, specific technical requirement with clear reference to manufacturer service bulletin","Narrow applicability limited to one aircraft series with specific optional equipment and part number","No nested exceptions or conditional logic — straightforward 'unless previously accomplished' carve-out","Simple compliance timeline (6 months from effective date)","Only one defined term implicitly used (the part number reference)","No cross-referencing to other Australian legislation — only references German authority (LBA) and manufacturer document"],"plain_english_summary":"This AD mandates that operators of Dornier 228 aircraft fitted with windshield wash system option 3109 and nozzle assemblies P/N A-926054A00C modify the system—install protective housings around spray nozzles and change wiring—per Manufacturer Service Bulletin SB-228-235 Rev 1.\n\nIt responds to reports of nozzle-heater overheating that caused cockpit smoke and fire risk; compliance was required within six months of 27 Oct 2005 (non‑compliant aircraft are unairworthy in Australia)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The Directive stays within the original safety objective: to remove the hazard of overheating windshield spray nozzle heating elements that caused cockpit smoke. It does not expand beyond that purpose or add unrelated requirements. The action is narrowly defined (specific part number and service bulletin) and therefore does not materially broaden the scope from the original intent."},"complexity_factors":["Single aircraft type and narrow applicability (Dornier 228 with option 3109 and P/N A-926054A00C)","One clear required action tied to a single service bulletin (SB-228-235 Rev 1)","Short compliance timeframe specified (six months)","Minimal cross‑references (note to LBA AD 1999-030/3)","No layered exceptions or multiple conditional pathways","Limited number of technical elements (install housing, change wiring)"],"plain_english_summary":"**What this Directive does (mechanically)**\n\n- It requires owners/operators of certain Dornier 228 aeroplanes to modify the windshield wash system if those aeroplanes are fitted with option 3109 and spray nozzle assemblies P/N A-926054A00C. (Applicability)\n- The modification must follow Fairchild Dornier GmbH Service Bulletin SB-228-235 Revision 1 dated 18 December 2001. The work specifically involves installing the spray nozzles in a protective housing and changing electrical wiring for the system. (Requirement)\n- The change must be completed within six months of the Directive’s effective date. (Compliance)\n\n**Who must act / who pays**\n\n- Aircraft owners/operators of Dornier 228 aeroplanes that have the specified windshield wash components are required to arrange and pay for the modification. (Applicability, Requirement)\n- The Civil Aviation Safety Authority (via the Delegate who issued the Directive) is the regulator that set the requirement and compliance deadline. Non‑compliance is a regulatory breach. (Compliance)\n\n**Why the Directive exists (official rationale)**\n\n- The German aviation authority (Luftfahrt‑Bundesamt) reported incidents where the windshield spray nozzle heating elements overheated before flight, producing smoke in the cockpit. The Directive’s stated purpose is to prevent smoke and possible fire in the cockpit by modifying the system. (Background)\n\n**Practical effects and immediate mechanics**\n\n- Affected aircraft must be booked into maintenance to have the nozzle assemblies placed in protective housings and the wiring changed as specified in the service bulletin. (Requirement)\n- The AD identifies the specific part number (P/N A-926054A00C) and the service bulletin to be used, so the work is narrowly defined rather than open‑ended. (Applicability, Requirement)\n\n**Costs, incentives, and trade‑offs**\n\n- Who bears cost: Owners/operators of the affected aircraft will bear direct costs for parts, labour and any aircraft downtime. (Applicability, Requirement)\n- Concentrated costs vs diffuse benefits: The financial burden falls on the smaller group of operators with that optional system and part number; the safety benefit (reduced risk of smoke/fire) is broadly shared by crew and passengers. (Applicability, Background)\n- Implementation risk and opportunity cost: Aircraft will need maintenance time (downtime) to perform the modification. If parts or qualified technicians are limited, operators could face scheduling delays or higher labour costs. (Requirement, Compliance)\n- Market effects for maintenance providers: The requirement creates immediate demand for parts and labour related to the service bulletin. This can benefit OEM‑authorised or specialised maintenance shops; independent repair stations can also perform the work provided they meet technical and regulatory standards. (Requirement)\n\n**Compliance and enforcement practicalities**\n\n- Deadline: The AD requires completion within six months of its effective date, which sets a time pressure on scheduling maintenance. (Compliance)\n- The AD cross‑references earlier foreign action (LBA AD 1999‑030/3), indicating regulatory alignment with overseas authority, but the specific remedy is the service bulletin named in this Directive. (Requirement, Note)\n\n**Implementation risks and unintended consequences to watch for**\n\n- If replacement housings or wiring kits are in short supply, some operators could face longer outages or higher repair costs. (Requirement, Compliance)\n- If maintenance work must be done to a high specification or only by certain authorised providers, competition could be limited and costs higher—this depends on how strictly operators interpret the service bulletin and on availability of qualified technicians. (Requirement)\n\n**Summary statement of effects**\n\n- Mechanically: install protective housings on the windshield spray nozzles and change wiring according to the named service bulletin. (Requirement)\n- Who pays and acts: affected aircraft owners/operators arrange and fund the modification within six months; the regulator enforces the requirement. (Applicability, Compliance)\n- Why: to prevent pre‑flight overheating of nozzle heaters that has caused cockpit smoke and could lead to fire. (Background)\n\n(References in parentheses indicate the AD sections where these points are stated: Applicability, Requirement, Compliance, Background.)"},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-do-228-3-windshield-wash-system","history":"/api/acts/ad-do-228-3-windshield-wash-system/history","analysis":"/api/acts/ad-do-228-3-windshield-wash-system/analysis","conflicts":"/api/acts/ad-do-228-3-windshield-wash-system/conflicts","importantCases":"/api/acts/ad-do-228-3-windshield-wash-system/important-cases","documents":"/api/acts/ad-do-228-3-windshield-wash-system/documents"}}