{"id":"F2017L00579","name":"AD/A320/63 Amdt 1\t- Lavatories Smoke Detection","slug":"ad-a320-63-amdt-1-lavatories-smoke-detection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":96354,"registerId":"commonwealth-F2017L00579-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus A319, A320 and A321 Series Aeropl","sectionType":"part","heading":"Airbus A319, A320 and A321 Series Aeroplanes","content":"# Airbus A319, A320 and A321 Series Aeroplanes\n\n| AD/A320/63 Amdt 1 | Lavatories Smoke Detection | 10/2017 |\n| ----------------- | -------------------------- | ------- |\n\n| Applicability: | All Airbus A320 models without Airbus modifications 22561 or 24548 embodied; or Airbus Service Bulletins (SBs) A320-26-1017 or A320-26-1037 as in force from time to time incorporated.                                                                                                          |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Action in accordance with Airbus SB A320-26-1037 as in force from time to time.Note 1: This AD is based on DGAC ADs 94-168-058(B)R1 and 96-007-073(B).Note 2: The words “as in force from time to time” require compliance with the most recent version of the referenced document.              |\n| Compliance:    | Unless already accomplished, within 500 hours time in service after 28 March 1996.Note 3: Previous compliance with any requirement in AD/A320/63 constitutes compliance with the same requirement in this AD.                                                                                    |\n|                | This AD commences on 26 May 2017.                                                                                                                                                                                                                                                                |\n| Background:    | This Directive provides terminating action for the inspection required by Airbus All Operator Telex A320/AOT 26-12 which required an inspection of the lavatory air extraction grill to prevent degradation of the smoke detecting system.Amendment 1 is issued to clarify the AD applicability. |\n\n![](image.001.jpeg)\n\nPieter van Dijk  \nDelegate of the Civil Aviation Safety Authority\n\n17 May 2017","sortOrder":0},{"sectionNumber":"AD/A320/63 Amdt 1","sectionType":"part","heading":"AD/A320/63 Amdt 1","content":"## AD/A320/63 Amdt 1","sortOrder":1},{"sectionNumber":"Lavatories Smoke Detection","sectionType":"part","heading":"Lavatories Smoke Detection","content":"## Lavatories Smoke Detection","sortOrder":2},{"sectionNumber":"10/2017","sectionType":"part","heading":"10/2017","content":"## 10/2017","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 Amendment 1 to an existing Airworthiness Directive originally issued in 1996. The amendment explicitly states its purpose is to 'clarify the AD applicability' — it does not expand the scope beyond the original safety intent of ensuring proper lavatory smoke detection. The substantive safety requirement remains unchanged from the original 1996 directive."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 defined concepts requiring explanation (Service Bulletins and 'as in force from time to time')","Single compliance pathway with one clear deadline","No nested exceptions or conditional logic — applicability is a straightforward binary test (specific modifications embodied or not)","Cross-references limited to 2 external documents (Airbus SB and previous ADs) with explicit incorporation by reference","Background provides clear rationale without legal ambiguity"],"plain_english_summary":"This CASA Airworthiness Directive mandates installation or upgrade of lavatory smoke detection on certain Airbus A319/A320/A321 aircraft that lack specified factory mods or previous service bulletin compliance, using the current Airbus Service Bulletin A320-26-1037. It addresses a safety defect where the lavatory air extraction grill can impair smoke detection and delay fire warnings. The 2017 amendment only clarifies affected aircraft; the original compliance timing (within 500 flight hours after 28 Mar 1996) remains."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 1 clarifies which aeroplanes are subject to the directive but does not alter the substantive remediation required (the SB action) or the stated compliance deadline. See Background and Applicability."},"complexity_factors":["Cross-references to multiple Airbus modifications and service bulletins in Applicability increase reading and eligibility checks (Applicability).","Requirement mandates compliance with the latest version of SB A320-26-1037 (‘as in force from time to time’), which creates an ongoing update obligation for operators (Requirement, Note 2).","Retroactive timing: a 500-hour compliance window measured from 28 March 1996 but AD commencement dated 26 May 2017 can confuse record evaluation and tracking (Compliance).","Interaction with earlier documents: this AD is terminating action for Airbus AOT A320/AOT 26-12 and is based on earlier DGAC ADs, requiring cross-checks of prior compliance (Background, Note 1).","Duplicate-compliance clause: prior compliance with AD/A320/63 satisfies the corresponding requirement here, requiring operators to reconcile historical maintenance records (Compliance, Note 3).","Implicit cost/responsibility: the operator/owner must carry out the SB work within the prescribed window; the AD does not state funding or delegation arrangements (Requirement, Compliance)."],"plain_english_summary":"Requires Airbus A319/A320/A321 aeroplanes that do not have Airbus modifications 22561 or 24548 embodied (or the referenced service bulletins) to have lavatory smoke-detection work done in accordance with Airbus Service Bulletin A320-26-1037. Operators must comply within 500 hours time-in-service after 28 March 1996 if not already done; the AD commences 26 May 2017. The AD provides terminating action for a prior inspection of the lavatory air-extraction grill."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-63-amdt-1-lavatories-smoke-detection","history":"/api/acts/ad-a320-63-amdt-1-lavatories-smoke-detection/history","analysis":"/api/acts/ad-a320-63-amdt-1-lavatories-smoke-detection/analysis","conflicts":"/api/acts/ad-a320-63-amdt-1-lavatories-smoke-detection/conflicts","importantCases":"/api/acts/ad-a320-63-amdt-1-lavatories-smoke-detection/important-cases","documents":"/api/acts/ad-a320-63-amdt-1-lavatories-smoke-detection/documents"}}