{"id":"F2006L02527","name":"AD/A330/59 - Electronic Instrument System Software Upgrade","slug":"ad-a330-59-electronic-instrument-system-software-upgrade","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":59772,"registerId":"commonwealth-F2006L02527-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus Industrie A330 Series Aeroplanes","sectionType":"division","heading":"Airbus Industrie A330 Series Aeroplanes","content":"### Airbus Industrie A330 Series Aeroplanes\n\n| AD/A330/59 | Electronic Instrument System Software Upgrade | 9/2006 |\n| ---------- | --------------------------------------------- | ------ |\n\n| Applicability: | Airbus A330 aeroplanes, all certified models, all serial numbers, equipped with Electronic Instrument System EIS 2 software versions as follows:                                                                   |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|                | a. Version L4-1 installed through either Airbus modification 51153 during production or Airbus Service Bulletin (SB) A330-31-3057 or A330-31-3056 whilst in service, or                                            |\n|                | b. Version L5 installed through either Airbus modification 51974 during production or Airbus SB A330-31-3069 or A330-31-3056 whilst in service.                                                                    |\n|                | Note 1: This Directive is not applicable to aircraft on which EIS 2 software standard L6-1 has been installed through either Airbus modification 53063 during production or Airbus SB A330-31-3087 during service. |\n| Requirement:   | Upgrade the standard of EIS 2 to L6-1 in accordance with Airbus SB A330-31-3087 or later EASA approved revision.                                                                                                   |\n|                | Aircraft Flight Manual (AFM) Temporary Revision (TR) 4.03.00/26 introduced by AD/A330/53 Amdt 1 may be removed from the AFM following installation of software standard L6-1.                                      |\n|                | Note 2: EASA AD 2006-0196 refers.                                                                                                                                                                                  |\n| Compliance:    | Before 31 December 2007.                                                                                                                                                                                           |\n|                | This Airworthiness Directive becomes effective on 31 August 2006.                                                                                                                                                  |\n| Background:    | This Directive provides terminating action for AD/A330/53 Amdt 1, which will be cancelled in January 2008.                                                                                                         |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n21 July 2006","sortOrder":0},{"sectionNumber":"AD/A330/59","sectionType":"part","heading":"AD/A330/59","content":"## AD/A330/59","sortOrder":1},{"sectionNumber":"Electronic Instrument System Software Up","sectionType":"part","heading":"Electronic Instrument System Software Upgrade","content":"## Electronic Instrument System Software Upgrade","sortOrder":2},{"sectionNumber":"9/2006","sectionType":"part","heading":"9/2006","content":"## 9/2006","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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This Directive does not expand the subject matter beyond its original, narrow purpose. It provides a mandated upgrade path to a specific software standard (L6-1) for aircraft with earlier EIS 2 software and acts as the terminating action for the prior AD (AD/A330/53 Amdt 1). The instrument replaces a temporary operational restriction with a permanent software standard; it narrows operational constraints for compliant aircraft rather than broadening regulatory scope."},"complexity_factors":["Short, single-issue Airworthiness Directive focused on one software upgrade","3 software standards referenced (L4-1, L5, L6-1) limiting applicability","Cross-references to multiple Airbus modifications and Service Bulletins (51153, 51974, 53063, SB A330-31-3056/3057/3059/3069/3087)","Reference to external regulator document (EASA AD 2006-0196) and allowance for later EASA-approved revisions","Clear compliance deadline and effective date (minimal conditional logic)","Limited number of notes/exceptions (exclusion if L6-1 already installed, removal of AFM TR after upgrade)"],"plain_english_summary":"**What this directive does (mechanically)**\n\n- **Mandates a software upgrade** of the Electronic Instrument System (EIS 2) to software standard **L6-1** on affected Airbus A330 aeroplanes (all models, all serial numbers) that currently have EIS 2 software **L4-1** or **L5** installed (see \"Applicability\").\n- **Accepts Airbus Service Bulletin A330-31-3087 (or a later EASA-approved revision)** as the method for carrying out the upgrade (see \"Requirement\").\n- **Allows removal** of a previously required temporary Aircraft Flight Manual (AFM) revision (TR 4.03.00/26) once the L6-1 software is installed (see \"Requirement\").\n- **Sets a compliance deadline**: the upgrade must be completed **before 31 December 2007**, and the Directive became effective on **31 August 2006** (see \"Compliance\").\n- **Excludes aircraft** on which L6-1 is already installed (either in production via Airbus modification 53063 or in service via SB A330-31-3087) (see \"Applicability, Note 1\").\n\n**Who this affects**\n\n- **Aircraft operators and owners** of Airbus A330 aeroplanes fitted with EIS 2 software versions L4-1 or L5. Maintenance organisations performing the upgrade will also be involved.\n\n**Why it matters (official purpose and how it operates in practice)**\n\n- The Directive is presented as a **terminating action** for the earlier AD/A330/53 Amendment 1 (that earlier AD imposed a temporary AFM restriction) — installing L6-1 removes the need for that temporary AFM restriction and allows cancellation of the prior AD (see \"Background\").\n- Practically, operators must schedule the software upgrade in line with the Airbus service bulletin or an approved revision, bear the direct costs and downtime of the maintenance action, and then may delete the AFM temporary revision once the upgrade is done (see \"Requirement\").\n\n**Operational and compliance mechanics, incentives and costs**\n\n- Who pays: aircraft operators/installers pay for the labour, parts (if any), testing and aircraft time required to perform the EIS software upgrade (see \"Requirement\" and \"Compliance\").\n- Who decides: the Civil Aviation Safety Authority (via this Directive) mandates the action; compliance is effected by using the referenced Airbus Service Bulletin or a later EASA‑approved revision (see \"Requirement\").\n- Behaviour change required: operators must plan maintenance to implement the software change before the deadline; after upgrade they may remove the AFM temporary revision tied to the earlier AD (see \"Requirement\").\n- Trade-offs and risks: the measure imposes a one-off compliance cost and aircraft downtime; it replaces a temporary operational limitation (AFM TR) with a software standard, so the benefit is operational normalisation for compliant aircraft. Implementation risk is mainly logistical (scheduling, applying the approved SB correctly) rather than conceptual, provided the SB is followed.\n\n**Cross-references and flexibility**\n\n- The Directive references specific Airbus modifications and service bulletins for identifying current and target software standards, and it allows the use of a later EASA-approved revision of the service bulletin as the compliance method (see \"Applicability\" and \"Requirement\").\n- It also refers to the related EASA AD 2006-0196 for further context (see \"Requirement, Note 2\").\n\n**Concise summary**: Operators of A330s with EIS 2 software L4-1 or L5 must upgrade to L6-1 by 31 December 2007 using Airbus SB A330-31-3087 (or a later EASA‑approved revision). Once upgraded, the temporary AFM restriction tied to the earlier AD may be removed, and the earlier AD will be cancelled as the upgrade is the terminating action (see \"Background\")."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — it addresses a specific software upgrade for a specific aircraft type's electronic display system. The reference to terminating a previous AD is part of the intended lifecycle management of airworthiness directives, not scope creep."},"complexity_factors":["Single, specific technical requirement (software upgrade to version L6-1)","Clear applicability criteria with only two software versions (L4-1 and L5) and one exclusion (L6-1)","Single cross-reference to related European regulation (EASA AD 2006-0196)","No nested exceptions or conditional logic beyond the basic applicability test","Straightforward compliance deadline with no phased or alternative compliance options","Minimal defined terms (only standard aviation abbreviations: EIS, SB, AFM, TR, EASA)"],"plain_english_summary":"This CASA Airworthiness Directive mandates that operators of Airbus A330 aeroplanes fitted with EIS 2 software versions L4‑1 or L5 install the L6‑1 upgrade (per Airbus Service Bulletin A330‑31‑3087 or later). It fixes known safety issues, removes a temporary flight manual restriction from a prior AD, takes effect 31 Aug 2006, and must be complied with by 31 Dec 2007."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a330-59-electronic-instrument-system-software-upgrade","history":"/api/acts/ad-a330-59-electronic-instrument-system-software-upgrade/history","analysis":"/api/acts/ad-a330-59-electronic-instrument-system-software-upgrade/analysis","conflicts":"/api/acts/ad-a330-59-electronic-instrument-system-software-upgrade/conflicts","importantCases":"/api/acts/ad-a330-59-electronic-instrument-system-software-upgrade/important-cases","documents":"/api/acts/ad-a330-59-electronic-instrument-system-software-upgrade/documents"}}