{"id":"F2017L00555","name":"AD/A320/64 Amdt 1 - Avionics Hatch 231 AF","slug":"ad-a320-64-amdt-1-avionics-hatch-231-af","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":96329,"registerId":"commonwealth-F2017L00555-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/A320/64 Amdt 1 | Avionics Hatch 231 AF | 10/2017 |\n| ----------------- | --------------------- | ------- |\n\n| Applicability: | All Airbus A320 models without Airbus modifications 22119 or 21999 embodied, or Airbus Service Bulletin (SB) A320-53-1070 as in force from time to time incorporated.                                                                                          |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with Airbus SB A320-53-1070 as in force from time to time.Note 1: This AD is based on DGAC AD 96-011-075(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:    | Prior to 30 September 1997.Note 3: Previous compliance with any requirement in AD/A320/64 constitutes compliance with the same requirement in this AD.                                                                                                         |\n|                | This AD commences on 26 May 2017.                                                                                                                                                                                                                              |\n| Background:    | This Directive was issued to prevent spilled liquids entering the avionics compartment via the hatch seal.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/A320/64 Amdt 1","sectionType":"part","heading":"AD/A320/64 Amdt 1","content":"## AD/A320/64 Amdt 1","sortOrder":1},{"sectionNumber":"Avionics Hatch 231 AF","sectionType":"part","heading":"Avionics Hatch 231 AF","content":"## Avionics Hatch 231 AF","sortOrder":2},{"sectionNumber":"10/2017","sectionType":"part","heading":"10/2017","content":"## 10/2017","sortOrder":3}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is an amendment that explicitly states it only clarifies applicability. The original 1996 directive addressed a specific safety issue (liquid ingress to avionics). The 2017 amendment does not expand the scope — it merely makes clearer which aircraft are affected. The technical requirement and compliance deadline remain unchanged from the original 1996 directive."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 defined concepts requiring explanation (modification numbers and Service Bulletin references)","Single technical requirement with cross-reference to external Airbus document","Simple conditional applicability (exclusion based on prior modifications)","Contains administrative amendment (Amendment 1) that only clarifies scope without altering substantive requirements","No nested exceptions or complex conditional logic"],"plain_english_summary":"This AD requires owners/operators of certain Airbus A319/A320/A321 aircraft without modifications 22119 or 21999 (or not already compliant with Airbus Service Bulletin A320‑53‑1070) to carry out the SB repair to fix a maintenance‑hatch seal that could let liquids into the avionics bay. The original compliance date was before 30 Sept 1997; the 2017 amendment only clarifies which aircraft are affected, keeping the safety requirement in force for older aircraft."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 1 clarifies the AD’s applicability but does not alter the substantive requirement to comply with Airbus SB A320‑53‑1070 (as in force). The instrument accepts previous compliance as meeting the requirement, so the set of required actions remains the same; the amendment narrows ambiguity about which aircraft are covered."},"complexity_factors":["Cross-reference to an external Airbus Service Bulletin with the phrase “as in force from time to time” — requires operators to track and adopt the most recent SB version.","Applicability carve-outs tied to specific Airbus modification numbers (22119 and 21999) — requires checks of aircraft modification status.","Historical compliance and timing elements: the AD commences 26 May 2017 and sets a compliance deadline prior to 30 September 1997, creating a potential administrative/record-keeping anomaly to resolve.","Notes accepting prior compliance as satisfying the AD — requires operators and regulators to verify earlier work against the current SB.","Simple technical requirement (implement SB actions) but administrative enforcement rests with the Civil Aviation Safety Authority delegate — operational burden falls on aircraft owners/operators."],"plain_english_summary":"This Directive requires owners/operators of Airbus A319/A320/A321 aeroplanes without Airbus modifications 22119 or 21999, or without Service Bulletin A320‑53‑1070 embodied, to carry out the work in Airbus SB A320‑53‑1070 (as in force from time to time) to stop spilled liquids entering the avionics compartment via the hatch seal. It applies to affected aircraft and makes operators responsible for implementing the Service Bulletin and demonstrating compliance to the regulator."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-64-amdt-1-avionics-hatch-231-af","history":"/api/acts/ad-a320-64-amdt-1-avionics-hatch-231-af/history","analysis":"/api/acts/ad-a320-64-amdt-1-avionics-hatch-231-af/analysis","conflicts":"/api/acts/ad-a320-64-amdt-1-avionics-hatch-231-af/conflicts","importantCases":"/api/acts/ad-a320-64-amdt-1-avionics-hatch-231-af/important-cases","documents":"/api/acts/ad-a320-64-amdt-1-avionics-hatch-231-af/documents"}}