{"id":"F2008L01251","name":"AD/ERJ-170/15 - Pressure Equalisation Valve","slug":"ad-erj-170-15-pressure-equalisation-valve","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":73489,"registerId":"commonwealth-F2008L01251-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Embraer ERJ-170 Series Aeroplanes","sectionType":"division","heading":"Embraer ERJ-170 Series Aeroplanes","content":"### Embraer ERJ-170 Series Aeroplanes\n\n| AD/ERJ-170/15 | Pressure Equalisation Valve | 5/2008 |\n| ------------- | --------------------------- | ------ |\n\n| Applicability: | Embraer ERJ-170 aircraft; serial numbers (S/N) 17000002, 17000004 thru 17000013, and 17000015 thru 17000154 inclusive.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Perform a general visual inspection (GVI) on the left-hand bulkhead blow-out panel on both the forward and aft cargo compartments to check whether the pressure equalization valves part number (P/N) 120-48865-003 are installed. If both pressure equalization valves are installed in their respective blow-out panels, no additional action is required by this AD.2. If either valve is missing, install the missing valves P/N 120-48865-003 in accordance with Embraer Service Bulletin No. 170-21-0032 original issue, or later revision approved by the ANAC.For the purpose of this AD, a GVI is: “A visual examination of an interior or exterior area, installation or assembly to detect obvious damage, failure or irregularity. This level of inspection is made from within touching distance, unless otherwise specified. A mirror may be necessary to enhance visual access to all exposed surfaces in the inspection area. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight or drop-light, and may require removal or opening of access panels or doors. Stands, ladders or platforms may be required to gain proximity to the area being checked.”Note: AGÊNCIA NACIONAL DE AVIAÇÃO CIVIL - BRAZIL AD 2007-11-01 dated 12 December 2007 refers. |\n| Compliance:    | 1. Within the next 500 Flight Hours (FH) after the effective date of this AD, unless previously accomplished.2. Within the next 700 FH after the effective date of this AD.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |\n|                | This Airworthiness Directive becomes effective on 8 May 2008.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |\n\n| Background: | It has been noticed that the pressure equalization valve was not installed in the left-hand bulkhead blow-out panel, on the forward and/or aft cargo compartments, thus affecting the effectiveness of the fire detection, containment and suppression system. |\n| ----------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n6 March 2008","sortOrder":0},{"sectionNumber":"AD/ERJ-170/15","sectionType":"part","heading":"AD/ERJ-170/15","content":"## AD/ERJ-170/15","sortOrder":1},{"sectionNumber":"Pressure Equalisation Valve","sectionType":"part","heading":"Pressure Equalisation Valve","content":"## Pressure Equalisation Valve","sortOrder":2},{"sectionNumber":"5/2008","sectionType":"part","heading":"5/2008","content":"## 5/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope remains focused on the originally listed Embraer ERJ-170 serial numbers and on ensuring installation of pressure-equalisation valves in the left-hand forward and aft cargo blow-out panels. The AD sets inspection and installation actions and deadlines and does not expand applicability or actions beyond those stated (see Applicability; Requirement; Compliance)."},"complexity_factors":["Targeted applicability to a defined list of serial numbers (Applicability).","Two-step requirement: inspection (GVI) and conditional installation of specific part P/N 120-48865-003 (Requirement).","Use of an external service document as the installation procedure (Embraer Service Bulletin No. 170-21-0032) and requirement for ANAC approval of later revisions (Requirement).","Explicit, formal definition of a general visual inspection (GVI) that prescribes access and lighting conditions (Requirement — GVI definition).","Two separate compliance time figures (500 FH and 700 FH) in the Compliance block that may need operational interpretation (Compliance).","Operational burden: potential need to remove/open access panels, use mirrors, ladders or platforms to achieve 'touching distance' as defined (Requirement — GVI definition)."],"plain_english_summary":"Requires operators of specified Embraer ERJ-170 airframes to visually inspect the left-hand forward and aft cargo bulkhead blow-out panels for pressure-equalisation valves (P/N 120-48865-003) and to install any missing valves per Embraer Service Bulletin 170-21-0032 (or later ANAC-approved revision). Applies to the listed serial numbers and must be done within the short compliance windows (500/700 flight hours) because missing valves affect cargo fire detection, containment and suppression effectiveness."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, targeted Airworthiness Directive addressing a specific safety defect in a defined fleet of aircraft. The scope remains precisely limited to the identified valve installation issue in the specified cargo compartments."},"complexity_factors":["Single, specific technical requirement with clear conditional logic (if-then-else structure)","Only one defined term (GVI - General Visual Inspection) with explicit definition provided","Limited applicability: precisely enumerated serial number ranges (153 aircraft total)","No cross-references to other legislation or complex statutory provisions","Straightforward compliance timeline with two clear deadlines","Single external reference to Brazilian aviation authority (ANAC) and Embraer technical document, but these are standard for aircraft maintenance directives"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of 153 specified Embraer ERJ-170 aircraft to perform a general visual inspection of forward and aft cargo compartment blow-out panels to verify two pressure equalization valves are installed. If either valve is missing, it must be installed per Embraer Service Bulletin 170-21-0032. The AD protects cargo fire detection, containment and suppression systems, which could be compromised without the valves."},"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-170-15-pressure-equalisation-valve","history":"/api/acts/ad-erj-170-15-pressure-equalisation-valve/history","analysis":"/api/acts/ad-erj-170-15-pressure-equalisation-valve/analysis","conflicts":"/api/acts/ad-erj-170-15-pressure-equalisation-valve/conflicts","importantCases":"/api/acts/ad-erj-170-15-pressure-equalisation-valve/important-cases","documents":"/api/acts/ad-erj-170-15-pressure-equalisation-valve/documents"}}