{"id":"F2014L01109","name":"AD/ERJ-190/12 Amdt 1 - Hydraulic Shutoff Valves","slug":"ad-erj-190-12-amdt-1-hydraulic-shutoff-valves","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":92183,"registerId":"commonwealth-F2014L01109-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Embraer ERJ-190 Series Aeroplanes","sectionType":"division","heading":"Embraer ERJ-190 Series Aeroplanes","content":"### Embraer ERJ-190 Series Aeroplanes\n\n| AD/ERJ-190/12 Amdt 1 | Hydraulic Shutoff Valves | 18/2014 |\n| -------------------- | ------------------------ | ------- |\n\n| Applicability: | Embraer ERJ-190( ) aircraft equipped with firewall hydraulic shutoff valves part numbers (P/N) 975287-3 or 975287-5.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Perform an operational check for proper operation of the firewall hydraulic shutoff valves P/Ns 975287-3 or 975287-5, in accordance with Embraer Service Bulletin (SB) No. 190-29-0008 original issue, or further revisions approved by the ANAC.If necessary, replace any faulty hydraulic shutoff valve with either;(a) a valve bearing P/Ns 975287-3 or 975287-5 that has passed the operational check ;or,(b) a valve bearing a new P/N that has been approved as a replacement valve.For the purpose of this AD, an operational check is: “A task to determine that an item is fulfilling its intended purpose. The check does not require quantitative tolerances. This is a failure finding task.”The instructions and procedures to accomplish this AD are detailed in Embraer SB No. 190-29-0008 original issue, or further revisions approved by the ANAC.Note: AGÊNCIA NACIONAL DE AVIAÇÃO CIVIL - BRAZIL AD 2007-02-02R2 dated 17 July 2009 refers. |\n| Compliance:    | Initial inspection within 600 flight hours from 27 August 2007, unless previously accomplished, thereafter at intervals not to exceed 600 flight hours.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |\n|                | The effective date of this AD is 25 August 2014.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |\n| Background:    | Amendment 1 of this AD has been issued to fully reflect the details and requirements of revision 2 of the Brazilian AD which was issued to remove the requirement to install the same P/N valve where replacement is found necessary. Installation of a new P/N valve is now possible.Periodic operational check of the firewall hydraulic shutoff valves, made during routine maintenance, has revealed that the failure rate of that component is significantly higher than expected.                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |\n\n|     | Such a dormant failure, when combined with further possible failures, such as engine fire, may lead to an unacceptable reduction of safety margins. |\n| --- | --------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.jpeg)\n\nPieter van Dijk  \nDelegate of the Civil Aviation Safety Authority\n\n18 August 2014","sortOrder":0},{"sectionNumber":"AD/ERJ-190/12 Amdt 1","sectionType":"part","heading":"AD/ERJ-190/12 Amdt 1","content":"## AD/ERJ-190/12 Amdt 1","sortOrder":1},{"sectionNumber":"Hydraulic Shutoff Valves","sectionType":"part","heading":"Hydraulic Shutoff Valves","content":"## Hydraulic Shutoff Valves","sortOrder":2},{"sectionNumber":"18/2014","sectionType":"part","heading":"18/2014","content":"## 18/2014","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose: ensuring the airworthiness of firewall hydraulic shutoff valves on ERJ-190 aircraft. The amendment slightly expands replacement options (allowing new part numbers) but this is a technical refinement rather than scope creep. The core safety objective and affected fleet remain unchanged."},"complexity_factors":["Single, clearly defined applicability (one aircraft type, two specific part numbers)","Straightforward compliance timeline (600 flight hours, recurring)","Only one primary technical reference (Embraer Service Bulletin 190-29-0008)","Simple binary requirement: check valve, replace if faulty","Minimal defined terms (only one explicit definition: 'operational check')","No nested exceptions or conditional logic — replacement options are clearly enumerated as (a) or (b)","Short document length (approximately 250 words of substantive content)","Single cross-reference to Brazilian aviation authority (ANAC) for source documentation"],"plain_english_summary":"This CASA Airworthiness Directive mandates operators of Embraer ERJ‑190s fitted with firewall hydraulic shutoff valves P/N 975287‑3 or 975287‑5 to perform an operational check within 600 flight hours (from 27 Aug 2007) and every 600 hours thereafter, replacing any failed valve with a serviceable like‑for‑like part or an approved improved part number. It addresses frequent dormant valve failures that could leave hydraulic flow uncontrolled during an engine fire, and now permits upgraded valve installations."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"Amendment 1 changes the replacement scope: the earlier requirement to reinstall the same P/N valve when replacement was necessary was removed. Operators may now fit a new P/N valve provided that P/N is approved as a replacement by ANAC (Background: 'remove the requirement to install the same P/N... Installation of a new P/N valve is now possible')."},"complexity_factors":["Limited applicability to specific part numbers (Applicability) increases precision but narrows scope.","Operational check is qualitative/failure-finding only (Requirement) — no quantitative tolerances to measure.","Replacement options require approval for new P/Ns by ANAC (Requirement) — introduces regulatory discretion and approval step.","Initial and recurring 600 flight‑hour compliance interval (Compliance) imposes periodic workload and bookkeeping.","Dependence on Embraer Service Bulletin No. 190-29-0008 (Requirement) and any ANAC-approved revisions — cross-references add compliance complexity.","Amendment changed prior installation requirement (Background), altering permitted replacement choices and operational flexibility.","Safety rationale grounded in observed higher dormant failure rates (Background) — affects risk assessment and prioritisation by operators."],"plain_english_summary":"This directive requires Embraer ERJ‑190 operators with firewall hydraulic shutoff valves P/N 975287‑3 or 975287‑5 to perform an operational check and to replace any faulty valve with either a checked same‑P/N valve or an ANAC‑approved replacement. Inspections must start within 600 flight hours and recur every 600 hours. It affects aircraft operators and maintenance providers (who pay for checks/replacements); the regulator (CASA/ANAC via the service bulletin approval) decides acceptable procedures and replacement parts, responding to higher-than-expected dormant failures."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-erj-190-12-amdt-1-hydraulic-shutoff-valves","history":"/api/acts/ad-erj-190-12-amdt-1-hydraulic-shutoff-valves/history","analysis":"/api/acts/ad-erj-190-12-amdt-1-hydraulic-shutoff-valves/analysis","conflicts":"/api/acts/ad-erj-190-12-amdt-1-hydraulic-shutoff-valves/conflicts","importantCases":"/api/acts/ad-erj-190-12-amdt-1-hydraulic-shutoff-valves/important-cases","documents":"/api/acts/ad-erj-190-12-amdt-1-hydraulic-shutoff-valves/documents"}}