{"id":"F2009L01577","name":"AD/A330/92 Amdt 1 - Passenger Compartment Electrical Harness","slug":"ad-a330-92-amdt-1-passenger-compartment-electrical-harness","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":78326,"registerId":"commonwealth-F2009L01577-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/A330/92 Amdt 1 | Passenger Compartment Electrical Harness | 5/2009 |\n| ----------------- | ---------------------------------------- | ------ |\n\n```html\n

Applicability:

A330 model aircraft listed in Table 1, all manufacturer serial numbers (MSN), except those on which Airbus modification 48825 has been embodied during production.

Table 1

A330-201
A330-202
A330-203

A330-223
A330-243
A330-301

A330-302
A330-303
A330-321

A330-322
A330-323
A330-341

A330-342
A330-343

Requirement:

1. Modify the affected passenger compartment electrical harnesses in accordance with the instructions of Airbus Service Bulletin (SB) A330-92-3066,
Revision 01, dated 1 August 2008.

2. For aircraft that have already been modified, prior to the effective date of the original issue of this Directive (23 October 2008), in accordance with the instructions of Airbus SB A330-92-3066, at original issue dated 27 November 2007, accomplish the additional work in accordance with the instructions of Airbus SB A330-92-3066, Revision 01.

Later revisions of Airbus SB A330-92-3066, Revision 01, approved by the European Aviation Safety Agency (EASA), are acceptable for compliance with this Directive.

Note: EASA AD 2008-0161R1 refers.

Compliance:

For Requirement 1 - Before 22 August 2010.

For Requirement 1 - Before 8 September 2010.

This Amendment becomes effective on 7 May 2009.

Background:

Several reports have been received from A330 and A340 operators concerning chafing of the electrical harness behind the lavatory, located at L53, resulting in a number of short-circuits. This harness contains cables for lighting, plugs, loudspeakers and oxygen controls and indications.

\n```\n\n| | This condition, if not corrected, could lead to the short circuit of wires dedicated to oxygen, which, in case of emergency, could result in a large number of passenger oxygen masks (up to 32% of all seats) not being supplied with oxygen, possibly causing personal injuries. |\n| --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | This Amendment extends the compliance time to 24 months after the effective date of corresponding EASA Directives. |\n| | The original issue of this Directive became effective on 23 October 2008. |\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n26 March 2009","sortOrder":0},{"sectionNumber":"AD/A330/92 Amdt 1","sectionType":"part","heading":"AD/A330/92 Amdt 1","content":"## AD/A330/92 Amdt 1","sortOrder":1},{"sectionNumber":"Passenger Compartment Electrical Harness","sectionType":"part","heading":"Passenger Compartment Electrical Harness","content":"## Passenger Compartment Electrical Harness","sortOrder":2},{"sectionNumber":"5/2009","sectionType":"part","heading":"5/2009","content":"## 5/2009","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This Amendment 1 maintains the original scope of the Airworthiness Directive. It does not expand the affected aircraft types or introduce new safety issues. The amendment solely extends the compliance timeframe (to 24 months after the effective date of corresponding EASA Directives) compared to the original October 2008 issue. This is a procedural amendment addressing implementation timing, not a substantive expansion of regulatory scope."},"complexity_factors":["Single technical subject matter (electrical harness modification) with clear scope","Only 2 substantive requirements with straightforward conditional logic (if already modified, do additional work)","Single defined exception (Airbus modification 48825 embodied during production)","External reference to manufacturer service bulletin (Airbus SB A330-92-3066) creates dependency on non-legislative technical document","Cross-reference to European Aviation Safety Agency (EASA) AD 2008-0161R1 for context","Multiple aircraft model variants listed (15 specific A330 models) but presented in clear tabular format","Two separate compliance dates with potential typographical duplication (both Requirement 1 listed with different dates in table structure)","Standard AD structure (Applicability, Requirement, Compliance, Background) familiar to aviation industry"],"plain_english_summary":"This CASA Airworthiness Directive mandates modification of cabin wiring harnesses behind lavatory L53 on specified Airbus A330 models to stop chafing that can short-circuit systems (lighting, power, speakers and critically passenger oxygen masks). Without repair, up to 32% of masks could fail in decompression.\n\nIt affects listed A330 operators except aircraft fitted with Airbus mod 48825; compliance follows Airbus Service Bulletin A330-92-3066 Rev 01, and Amendment 1 extended the original compliance deadline."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This Amendment does not broaden the types of aircraft affected or add new mandatory technical objectives. It mainly adjusts timing and clarifies the work required for aircraft that complied with the earlier service bulletin: (a) it extends the compliance time (to 24 months after the corresponding EASA Directive), (b) requires additional work for aircraft previously modified under the original SB, and (c) confirms that later EASA‑approved revisions of the SB are acceptable. These are procedural and timing clarifications rather than a substantive expansion of scope."},"complexity_factors":["Short, focused instrument (single safety issue and single corrective action)","One primary external document to follow: Airbus SB A330-92-3066 Revision 01 (cross-reference dependency)","Exclusion clause for aircraft with Airbus modification 48825 (simple conditional applicability)","Requirement to perform additional work only for aircraft modified under the earlier SB (a single nested conditional)","Allowance for later revisions contingent on EASA approval (conditional flexibility/cross-jurisdiction reference)","Multiple compliance-date references (extension to 24 months and two dated deadlines listed), creating minor ambiguity unless read with EASA timings"],"plain_english_summary":"**What this instrument does (mechanically)**\n\n- Requires owners/operators of specified Airbus A330 models to modify the passenger-compartment electrical harness behind the lavatory at position L53.\n- The modification must be carried out in accordance with Airbus Service Bulletin (SB) A330-92-3066, Revision 01 (dated 1 August 2008).\n- Aircraft that were modified earlier under the original SB (27 November 2007) must have the additional work from Revision 01 carried out.\n- Later revisions of Airbus SB A330-92-3066 are acceptable for compliance if approved by the European Aviation Safety Agency (EASA).\n- The AD excludes aircraft that received Airbus modification 48825 during production (those aircraft are not affected).\n- The Amendment extends the compliance time so that affected operators have up to 24 months after the effective date of the corresponding EASA Directives to complete the work. The Amendment itself became effective on 7 May 2009.\n\n**Who is affected**\n\n- Airline operators and aircraft owners of the A330 models listed in Table 1 (A330-201, -202, -203, -223, -243, -301, -302, -303, -321, -322, -323, -341, -342, -343), for all manufacturer serial numbers except those fitted with factory modification 48825.\n\n**Why it matters (stated safety concern and practical effect)**\n\n- Background reports showed chafing (wear) of the electrical harness behind the lavatory at L53 causing short-circuits. That harness carries cables for cabin lighting, plugs, loudspeakers and critically oxygen controls/indications.\n- If not fixed, short circuits could disable oxygen mask deployment/supply for a substantial number of seats (the instrument cites up to 32% of all seats), increasing the risk of personal injury in an emergency.\n\n**How compliance works in practice**\n\n- Operators comply by performing the physical modification and any additional work specified in Airbus SB A330-92-3066 Revision 01 (or a later EASA‑approved revision).\n- For aircraft already modified to the original SB, operators must still perform the additional Revision 01 steps.\n- The AD sets a deadline (extended here) for completion; aircraft records should be updated to reflect the work performed so that compliance can be demonstrated to regulators and inspectors.\n\n**Costs, incentives, trade-offs and implementation risks**\n\n- Who pays: operators/owners pay the direct costs (parts, labour, aircraft downtime) to carry out the SB modification. There is no grant or subsidy in the instrument.\n- Incentives: the safety imperative and regulatory requirement create a strong incentive for timely compliance. Allowing EASA‑approved later revisions gives operators flexibility to adopt improved or clarified procedures without re-notification.\n- Trade-offs: extending the compliance time reduces immediate operational disruption and short‑term cost pressure on operators, but it delays the full mitigation of the safety risk identified.\n- Implementation risks: improper installation or incomplete application of the SB could leave the hazard unmitigated. The AD’s cross‑reference to EASA approval for later revisions centralises technical judgment with the certifying authority, which reduces inconsistent local reinterpretation but places on EASA the responsibility to vet later changes.\n- Compliance burden: modestly concentrated on A330 operators (costs of parts, labour and rectification), with diffuse public safety benefit. Aircraft already modified under the original SB face an incremental burden to carry out additional Revision 01 work.\n\n**Concrete legal mechanics cited**\n\n- Applicability: list of A330 variants and exclusion for MSNs with Airbus mod 48825 (Applicability/Table 1).\n- Requirement: carry out modification per Airbus SB A330-92-3066 Revision 01; additional work for earlier modifications (Requirements 1–2).\n- Acceptable alternatives: later EASA‑approved revisions of the SB (statement after Requirements).\n- Compliance timing: extended compliance period (Compliance section) and Amendment effective date (7 May 2009).\n\n(References in the instrument: Applicability/Table 1; Requirement paragraphs 1–2; EASA approval note; Compliance; Background.)"},"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-a330-92-amdt-1-passenger-compartment-electrical-harness","history":"/api/acts/ad-a330-92-amdt-1-passenger-compartment-electrical-harness/history","analysis":"/api/acts/ad-a330-92-amdt-1-passenger-compartment-electrical-harness/analysis","conflicts":"/api/acts/ad-a330-92-amdt-1-passenger-compartment-electrical-harness/conflicts","importantCases":"/api/acts/ad-a330-92-amdt-1-passenger-compartment-electrical-harness/important-cases","documents":"/api/acts/ad-a330-92-amdt-1-passenger-compartment-electrical-harness/documents"}}