{"id":"F2008L01930","name":"AD/ERJ-190/10 - Ram Air Turbine Deployment","slug":"ad-erj-190-10-ram-air-turbine-deployment","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74157,"registerId":"commonwealth-F2008L01930-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-190/10 | Ram Air Turbine Deployment | 7/2008 |\n| ------------- | -------------------------- | ------ |\n\n| Applicability: | Embraer ERJ-190( ) aircraft.                                                                                                                                                                                                                                                                                                                                                                                                               |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Replace the RAT deployment actuator having P/N 1703785 with a new one bearing P/N 1703785A, and re-identify the RAT actuators of serial numbers 191 thru 242.The detailed instructions and procedures to accomplish this AD are described in Embraer Service Bulletin No. 190-24-0003, original issue, or further revisions approved by the ANAC.Note: AGÊNCIA NACIONAL DE AVIAÇÃO CIVIL - BRAZIL AD 2006-05-09 dated 19 June 2006 refers. |\n| Compliance:    | Within 30 days after the effective of this AD unless previously accomplished.                                                                                                                                                                                                                                                                                                                                                              |\n|                | This Airworthiness Directive becomes effective on 3 July 2008.                                                                                                                                                                                                                                                                                                                                                                             |\n| Background:    | It has been found cases where, during the deployment of the ram air turbine, it may not fully deploy, because of excessive galling between the piston rod and gland housing in the actuator.                                                                                                                                                                                                                                               |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n22 May 2008","sortOrder":0},{"sectionNumber":"AD/ERJ-190/10","sectionType":"part","heading":"AD/ERJ-190/10","content":"## AD/ERJ-190/10","sortOrder":1},{"sectionNumber":"Ram Air Turbine Deployment","sectionType":"part","heading":"Ram Air Turbine Deployment","content":"## Ram Air Turbine Deployment","sortOrder":2},{"sectionNumber":"7/2008","sectionType":"part","heading":"7/2008","content":"## 7/2008","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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, targeted airworthiness directive addressing a specific mechanical defect. It has not expanded beyond its original purpose of mandating a safety-critical part replacement."},"complexity_factors":["Very short document (under 300 words)","Only 2 substantive requirements (replacement and re-identification)","Single cross-reference to Brazilian aviation authority (ANAC) and one Embraer Service Bulletin","No defined terms section — technical terms (RAT, P/N, galling) are used without formal definitions","Simple compliance deadline structure (30 days from effective date)","No nested exceptions or conditional logic"],"plain_english_summary":"This CASA Airworthiness Directive mandates that Australian operators of Embraer ERJ‑190 aircraft replace a susceptible Ram Air Turbine (RAT) deployment actuator because galling can prevent RAT deployment and cause loss of emergency electrical/hydraulic power. \n\nAffected actuators (specified serials) must be re‑identified and replaced per Embraer Service Bulletin 190‑24‑0003 within the compliance window; this is a legal, non‑optional safety requirement."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD targets a specific hardware failure mode on Embraer ERJ-190 aircraft and mandates a narrowly defined replacement and re‑identification (Requirement; Applicability). Nothing in the text expands the affected fleet or broadens obligations beyond the specified part numbers, serials and the 30‑day compliance window."},"complexity_factors":["Single corrective action (mechanical part replacement and re-identification) reduces legal complexity (Requirement).","Short compliance timeframe — 30 days after effectivity — increases logistical pressure on operators to source parts and schedule maintenance (Compliance).","Dependence on manufacturer service bulletin for procedures creates procedural reliance on Embraer documentation and any ANAC/CASA approvals (Requirement: Embraer Service Bulletin No. 190-24-0003).","Technical diagnosis of root cause (galling between piston rod and gland housing) requires qualified maintenance personnel and possible inspection time (Background).","Limited population affected (ERJ-190 aircraft, specific actuator serials 191–242) concentrates compliance costs on a defined operator subset (Applicability; Requirement).","Regulatory endorsement and date stamping by CASA delegate establish enforceability but leave little discretionary flexibility for operators (effective date and delegate signature)."],"plain_english_summary":"This AD requires operators of Embraer ERJ-190 aircraft to replace the ram air turbine (RAT) deployment actuator P/N 1703785 with P/N 1703785A and to re‑identify RAT actuators with serial numbers 191–242, using Embraer Service Bulletin No. 190-24-0003. It responds to reports that RATs may not fully deploy because of excessive galling between the piston rod and gland housing. Compliance is mandatory within 30 days of the AD’s effective date."}},"importantCases":[],"_links":{"self":"/api/acts/ad-erj-190-10-ram-air-turbine-deployment","history":"/api/acts/ad-erj-190-10-ram-air-turbine-deployment/history","analysis":"/api/acts/ad-erj-190-10-ram-air-turbine-deployment/analysis","conflicts":"/api/acts/ad-erj-190-10-ram-air-turbine-deployment/conflicts","importantCases":"/api/acts/ad-erj-190-10-ram-air-turbine-deployment/important-cases","documents":"/api/acts/ad-erj-190-10-ram-air-turbine-deployment/documents"}}