AD/A330/45 Amdt 3 - Wing Rib 6

The instrument’s main concepts are defined by a small set of operational and structural points that determine scope, duty, and remedial action.

Applicability, i.e. which aeroplanes are captured: all Model A330 aircraft that had Airbus modification 41114 or 44599 incorporated in production, except those aircraft that had Airbus modification 53883 or 54432 incorporated in production or Airbus Service Bulletin A330-57-3088 incorporated in service, on both wings (Applicability). The “both wings” condition is explicit: the exclusions operate only if the modification or service bulletin has been incorporated on both the left and right wings.

Mandatory action by reference: instead of reproducing inspection tasks and thresholds in full within the AD text, the AD requires action “in accordance with the requirements of EASA AD 2007-0148, dated 22 May 2007” (Requirement). This means the substantive inspection intervals, inspection type, and repair instructions are those that appear in the referenced EASA AD and its referenced service material (Note).

Immediate safety conditional: if cracking or other damage is found during inspection, the AD requires the operator to “contact Airbus before further flight” (Requirement). That creates a decision node: an operator must not return the aircraft to service without Airbus input where damage is found.

Document linkage and currency: the AD references Airbus All Operator Telex No. A330-57A3085 and specific Airbus Service Bulletins (A330-57-3085 Rev 1, A330-57-3087, A330-57-3088) and permits later EASA-approved revisions of those documents to be relied on (Note). That allows later approved revisions to be used but only once they have EASA approval.

Amendments as rule changes: the AD records three amendments. Amendment 1 decreased the Wing Rib 6 inspection threshold, introduced SB A330-57-3087 or MOD 53882 as options, and clarified inspection requirements after hard or overweight landings. Amendment 2 removed a grace period and mandated installation of a reinforcing plate unless the wing had been repaired under specified repair solutions (R572-57023 or R572-57026). Amendment 3 changes applicability by excluding aircraft with Rib 6 (aft) replaced in production under MOD 54432 (Background). These changes alter who is inspected, when, and what corrective actions are required.

Effective date: the Compliance section fixes a revised effective date of 5 July 2007 and states the Amendment becomes effective that date (Compliance). The AD was signed by a CASA delegate (Delegate of the Civil Aviation Safety Authority) on 24 May 2007 (signature block). The AD therefore operates by reference to external technical documents, by imposition of an inspection/repair/modification obligation, and by an aviation-safety conditional restricting return-to-service without Airbus clearance when damage is found.

The AD affects a defined subset of A330 operators, maintenance organisations, and the aircraft themselves as identified by production modification and service bulletin status.

Primary persons and entities affected

• Operators of Airbus A330 aircraft that, in production, had Airbus modification 41114 or 44599 incorporated, unless those aircraft meet one of the explicit exclusions (Applicability). The AD’s language directs action “in accordance with … EASA AD 2007-0148” (Requirement), so the primary duty-bearer is the operator responsible for continued airworthiness.
• Maintenance organisations contracted by those operators that perform inspections, repairs, or modifications specified in the referenced EASA AD and service bulletins. The AD references specific Service Bulletins and an All Operator Telex (Note), documents that maintenance organisations will use to perform work.
• Airbus, in a limited decision role: the AD requires that if cracking or other damage is found the operator must “contact Airbus before further flight” (Requirement). That places Airbus in a gatekeeping position where its direction is necessary before the aircraft may be returned to service after damage is discovered.

Aircraft affected

• Aircraft captured are defined strictly by production modification incorporation (41114 or 44599) and by absence of particular exclusion modifications or SB incorporation on both wings (53883, 54432, or SB A330-57-3088) (Applicability). The “both wings” specification means an aircraft with a qualifying modification on only one wing remains subject to the AD.

Regulatory roles

• The Civil Aviation Safety Authority is the issuing regulator: the AD is signed by a CASA delegate and declares an effective date (Delegate signature, Compliance). The AD itself does not describe enforcement mechanisms or penalties (Compliance), however CASA’s role as issuer places it in the position to require compliance under its regulatory remit, as evidenced by the signature block.

Affected decisions and activities

• Operators must determine applicability by reference to production records and service bulletin incorporation records (Applicability), then implement the actions required by EASA AD 2007-0148 (Requirement). If damage is found, the operator must contact Airbus and await guidance before further flight (Requirement), which may cause operational disruption. Amendments change inspection thresholds, repair obligations, and whether a reinforcing plate must be installed; these affect scope and timing of maintenance and potential out-of-service time (Background).

Who is not affected

• Aircraft that have had the new Rib 6 (aft) on both wings installed in production via AIRBUS modification 54432 are excluded by Amendment 3 (Background). Aircraft with MOD 53883 or SB A330-57-3088 incorporated in service on both wings are also excluded (Applicability). Those excluded do not have the duties imposed by this AD.

Duties imposed by the AD are primarily procedural and technical. Rights in the sense of decision roles are limited and primarily involve Airbus and the operator.

Primary duties

• Carry out actions in accordance with EASA AD 2007-0148 dated 22 May 2007 (Requirement). The AD does not reproduce those actions; it makes compliance with the EASA AD compulsory for aircraft within the specified applicability.
• If cracking or other damage is found, the operator must contact Airbus before further flight (Requirement). That condition is explicit and immediate: discovery of damage triggers the duty to obtain Airbus instruction before the aircraft may return to flight status.

Documentation and references to use

• Use Airbus All Operator Telex No. A330-57A3085 and Service Bulletins A330-57-3085 Revision 1, A330-57-3087, and A330-57-3088, or later EASA-approved revisions, as referenced by the EASA AD (Requirement, Note). The AD permits later EASA-approved revisions but does not specify which revisions; compliance requires using the then-current EASA-approved revision.

Amendment-driven duties

• Amendment 1 requires inspection at a decreased threshold, and introduces specific repair options (SBA330-57-3087 or MOD 53882) and clarifies inspections following hard/overweight landings (Background). Operators must follow the amended thresholds and repair options where applicable.
• Amendment 2 removes a previously available grace period and requires installation of a reinforcing plate on wings not already repaired under repair solution R572-57023 or R572-57026 (Background). That creates a duty to perform a modification unless an authorised repair solution has already been applied.
• Amendment 3 amends applicability to exclude aircraft with new Rib 6 (aft) installed in production via MOD 54432 (Background). That changes the universe of aircraft that must comply.

Decision rights and interaction

• Airbus acquires a decision-control role in damaged-aircraft scenarios: the operator must contact Airbus and follow Airbus guidance before further flight (Requirement). The EASA AD and referenced service documents set technical criteria and the scope of necessary actions; the AD itself confers a right to rely on later EASA-approved revisions of those documents (Note).

Operational consequences

• Operators must assess production modification records and service bulletin incorporation records to determine applicability (Applicability). They must schedule, perform and, where necessary, arrange for structural repairs or installations such as reinforcing plates (Background). Where damage is found that triggers the “contact Airbus” requirement, flight operations are immediately affected until Airbus provides further instruction.

Rights not specified

• The AD does not set out rights of appeal, timelines for Airbus responses, or compensation for costs. Those matters are not included in the AD text; any such rights would arise from other contractual arrangements between operators and Airbus or from broader regulatory procedures not stated in this instrument.

The AD text does not specify penalty provisions, monetary fines, or particular enforcement procedures. The instrument records that it becomes effective on 5 July 2007 (Compliance) and is issued by a CASA delegate (signature block), which indicates regulatory authority to mandate the actions in the AD. Beyond that, the AD contains no express enforcement clauses, sanctions, or administrative penalty schedules.

What the AD does specify relevant to enforcement

• The AD makes compliance with the technical requirements of EASA AD 2007-0148 mandatory for aircraft within its applicability (Requirement). That creates an enforceable obligation in the sense that the issuing regulator has mandated the actions. The AD sets an effective date (5 July 2007) for compliance (Compliance).

What the AD does not specify

• The AD does not state civil or criminal penalties for non-compliance. It does not specify inspection or audit regimes, notice-and-response processes, or the administrative procedure an operator should expect if alleged non-compliance is found. The AD does not set timelines for regulator actions or state whether CASA will accept alternative methods of compliance or delegations. Those enforcement details are absent from the text.

Practical enforcement implications (from the text)

• The AD’s requirements operate by reference to a European Safety Agency AD and Airbus technical documents (Requirement, Note). Given that the AD is issued under CASA authority and signed by a delegate (signature block), the regulatory expectation is that operators will comply. Failure to comply with an AD in aviation typically carries operational consequences, including grounding or prohibition of flight for non-compliant aircraft; however those consequences are not described in this AD itself.

Operator risk allocation

• The AD mandates contact with Airbus before further flight if damage is found (Requirement). That creates an immediate operational constraint. The AD does not discuss timelines for compliance with corrective instructions provided by Airbus, nor does it discuss the process for seeking alternative corrective actions or approvals.

Summary

• The instrument mandates specific technical compliance but leaves enforcement mechanisms, penalties, and procedural enforcement detail unspecified in its own text. The issuing authority and effective date are recorded, which locates responsibility for requiring compliance, but the AD does not set out a penalty or enforcement regime within its contents.

This AD functions by cross-reference to external regulatory and technical instruments rather than creating standalone technical requirements. The interaction is predominantly with EASA AD 2007-0148 and with Airbus-issued service information.

Reference to EASA AD

• The Requirement section directs operators to take action “in accordance with the requirements of EASA AD 2007-0148, dated 22 May 2007” (Requirement). That means the substantive inspection, repair and modification mandates are those contained in the EASA AD. Compliance with this CASA AD therefore requires compliance with an EASA instrument; the CASA AD imports the EASA AD’s technical content by reference.

Reference to Airbus technical documents

• The AD references Airbus All Operator Telex No. A330-57A3085 and Service Bulletins A330-57-3085 Revision 1, A330-57-3087, and A330-57-3088 (Note). It also allows “later EASA approved revisions” of those documents to be relied upon. In practice this means that the AD’s requirements will be implemented using Airbus technical material that has EASA approval; the CASA AD does not itself reproduce the technical steps.

Interaction with national production modification status

• Applicability is tied to specific Airbus production modifications (41114, 44599) and to later modifications and service bulletin incorporations (53883, 54432, SB A330-57-3088) (Applicability). The AD therefore interacts with production records and continuing airworthiness records for each aircraft and requires operators to rely on those records to determine whether the AD applies.

Amendment interactions

• Amendments to this AD respond to changes in DGAC (French Directorate General for Civil Aviation) ADs and to Airbus repair solutions and modifications (Background). For example, Amendment 2 was issued in response to a new DGAC AD that deleted a grace period and mandated a reinforcing plate where certain repair solutions had not been applied (Background). This shows cross-jurisdictional technical alignment: CASA’s AD responds to continental European regulator action and Airbus repair solutions.

Excluded instruments and incorporation modes

• The AD excludes aircraft that incorporated certain modifications in production or certain service bulletin work “in service” on both wings (Applicability). The distinction between “in production” modification and “incorporated in service” matters for applicability and therefore constitutes an interaction between production records, maintenance records, and the AD’s legal effect.

What the AD does not do

• The AD does not purport to override contractual arrangements between operators and Airbus or maintenance providers. It does not provide a mechanism for arbitration with Airbus where Airbus is required to be contacted (Requirement). It also does not specify broader regulatory enforcement or how CASA coordinates with other national authorities; those interactions are not described in the text.

In sum: the AD operates through cross-reference. Compliance requires translating CASA’s directive into action by following EASA AD 2007-0148 and Airbus technical material, while checking production and service bulletins to establish applicability. Amendments show the AD will be adjusted in response to other authorities (e.g., DGAC) and Airbus repair solutions.

The AD records three amendments and a sequence of adjustments that change inspection thresholds, repair solutions and the set of affected aircraft. The AD text annotates what each amendment did and why.

Original issuance and effective date

• The AD text states a revised effective date of 5 July 2007 and records “This Amendment becomes effective on 5 July 2007” (Compliance). The AD is signed by a CASA delegate on 24 May 2007 (signature block), which establishes the administrative provenance and effective timing.

Amendment 1

• Amendment 1 decreased the Wing Rib 6 inspection threshold. It also introduced SBA330-57-3087 or MOD 53882 as options for repair or modification, and clarified inspection requirements following hard or overweight landings (Background). Those changes reduced the time or flight hours before which inspections must be carried out (the AD states a “decreased inspection threshold”) and added or clarified specific remedial options for affected structure.

Amendment 2

• Amendment 2 was issued in response to a new DGAC AD. It deleted a grace period that was no longer relevant and mandated modification of Wing Rib 6 by installation of a reinforcing plate on wings not already repaired in accordance with repair solutions R572-57023 or R572-57026 (Background). That amendment thus removed a prior temporary compliance window and imposed a modification requirement except where specified repair solutions had already been applied.

Amendment 3

• Amendment 3 amended the applicability to exclude aircraft which had a new Rib 6 (aft) on both wings installed in production through incorporation of AIRBUS modification 54432 (Background). This change narrows the set of affected aircraft by excluding those which were manufactured with the upgraded Rib 6 (aft).

Notes about incorporation

• The AD also records that certain exclusions operate where modification 53883 or 54432 was incorporated in production or where Airbus Service Bulletin A330-57-3088 is incorporated in service “on both wings” (Applicability). The “both wings” condition is part of the amendment calculus and is explicitly referenced.

Reference materials and revision handling

• The AD notes Airbus All Operator Telex No. A330-57A3085 and Service Bulletins A330-57-3085 Revision 1, A330-57-3087, and A330-57-3088, or later EASA-approved revisions, as applicable technical references (Requirement, Note). Amendment history thus interacts with external documents that may themselves be revised and approved by EASA.

Rationale recorded in the AD

• The Background section records that the amendments responded to reports of significant cracking found during scheduled maintenance and follow-up inspections on similar aircraft (Background). That operational evidence is cited to justify lowering inspection thresholds and mandating structural reinforcement where repairs had not been applied.

Practical reading

• Anyone implementing the AD must therefore be attentive to which amendment is applicable to their compliance timeline and what each amendment changed. The AD text aggregates the amendments, but compliance obligations are expressed by reference to the then-applicable EASA AD and the specified service materials. The AD instructs operators to follow EASA AD 2007-0148, which will itself reflect the technical content necessary to implement the amendment changes.

The AD text contains no litigation record, case citations, or references to judicial or administrative proceedings. The instrument lists only technical background, amendments, and the issuing authority’s signature. There are no disputes, court orders, appeals, or legal challenges recorded within the text of this AD. The AD does record that Amendment 2 was issued in response to a new DGAC AD, indicating regulatory coordination, but it does not mention any legal proceedings arising from that change (Background).

Implications of the absence of litigation in the text

• Because the AD does not cite any litigation, there are no judicial interpretations, precedents, or settled case law recorded in the instrument that would inform how its terms have been interpreted in dispute contexts. Any legal challenges or enforcement actions that may have arisen after issuance are not present in the document provided.

Practical consequence for users

• Lawyers, compliance officers and risk managers relying on this AD must therefore treat the AD as a regulatory instrument without recorded litigation history in the source. If a legal dispute arises about scope, application, or enforcement, the AD does not provide internal guidance on appeals processes, remedies, or prior adjudication. Users will need to seek external legal sources or regulatory records beyond this AD for litigation history, case law, or precedent.

Note on cross-jurisdictional references

• The AD’s reference to EASA and DGAC actions (Requirement, Background) suggests that coordination among regulators informed the AD’s content, but no litigation around those decisions is included in the AD document supplied.

The AD contains several points that can produce operational ambiguity, unanticipated compliance costs, or decision friction. These are practical “watch outs” grounded in the instrument’s wording.

Applicability is technical and narrowly expressed

• Applicability turns on production modifications (41114 or 44599) and explicit exclusions (MOD 53883, MOD 54432, or SB A330-57-3088 incorporated in service) but only where those exclusions are on both wings (Applicability, Background). Record-keeping errors or ambiguous maintenance histories can therefore create uncertainty about whether an aircraft is captured. Operators must verify manufacturing records and in-service SB incorporation status wing-by-wing.

Exclusion requires “both wings”

• The text excludes aircraft only where the exclusion mod or SB is incorporated on both wings (Applicability). Where only one wing has the exclusionary mod, the aircraft remains subject to the AD. That creates complexity for mixed-status aircraft and for aircraft that have had asymmetric repairs or modifications over time.

Action by reference can obscure specific obligations

• The AD mandates compliance with EASA AD 2007-0148 (Requirement) but does not reproduce inspection intervals, techniques, or thresholds. Practitioners must consult EASA AD 2007-0148 and the referenced Airbus service documents to identify the exact tasks and intervals. Relying only on this CASA AD without the EASA AD and specified SBs is insufficient.

“Contact Airbus before further flight” is a binary operational constraint

• Where cracking or other damage is found the operator must contact Airbus before further flight (Requirement). That condition can immediately ground an aircraft until Airbus provides direction. The AD does not specify expected response times or fallback procedures if Airbus is unavailable, creating operational risk and potential disruption.

Amendment changes can retroactively alter obligations

• Amendments 1 and 2 decreased inspection thresholds and removed a grace period, and Amendment 2 mandated reinforcing plates unless specified repairs were already applied (Background). Operators who relied on older thresholds or grace periods may find themselves out of compliance if they did not track amendments. The AD’s effective date and amendment history must be monitored.

Dependence on EASA-approved revisions

• The AD permits “later EASA approved revisions” of the referenced service materials (Note). Operators must ensure the revision they use is EASA-approved. Using a later Airbus SB revision that has not received EASA approval would not be authorised by the AD.

Repair-solution exceptions require precise identification

• Amendment 2 exempts wings repaired in accordance with repair solution R572-57023 or R572-57026 from the reinforcing-plate mandate (Background). Operators must be able to demonstrate that those specific repair solutions were applied; generic repair records will not suffice.

No penalties or enforcement specifics in the AD

• The absence of expressed penalties or enforcement procedures in the AD (Compliance) does not mean there are none under broader regulatory frameworks. But the AD itself provides no enforcement roadmap, leaving uncertainty about procedural steps should non-compliance be alleged.

Record-keeping and proof

• The AD places duties that require proof of compliance: verifying production mods, SB incorporation on both wings, performance of inspections, application of repair solutions, and installation of reinforcing plates where directed. Failure to maintain clear contemporaneous records can create compliance exposure.

In sum, the practical gotchas are: determination of applicability, binary “both wings” exclusions, reliance on external documents for substantive steps, immediate operational constraints when damage is found, amendment-driven changes, and the need for precise proof of repair solutions or modifications.

Compliance with this AD requires a sequence of documented technical and administrative steps that follow directly from the AD’s text. The AD’s Requirement section delegates substantive technical content to EASA AD 2007-0148 and referenced Airbus materials; implementing parties must use those documents.

Step 1 - Establish applicability

• Check each A330 aircraft’s production modification records to confirm whether Airbus modification 41114 or 44599 was incorporated in production (Applicability). If neither was incorporated, the AD does not apply by its express terms.
• Check for exclusionary modifications and service bulletin incorporation: determine whether Airbus modification 53883 or 54432 was incorporated in production, or whether Airbus Service Bulletin A330-57-3088 has been incorporated in service, and crucially whether those are present on both wings (Applicability, Background). If the exclusionary mod or service bulletin is incorporated on both wings, the aircraft is excluded.

Step 2 - Obtain and follow the referenced EASA AD and Airbus service material

• Obtain EASA AD 2007-0148 dated 22 May 2007 and the Airbus documents referenced: All Operator Telex No. A330-57A3085, Service Bulletins A330-57-3085 Revision 1, A330-57-3087, and A330-57-3088 (Requirement, Note). Ensure any later revisions used are EASA-approved as permitted by the AD (Note).
• Apply the inspections, thresholds and repair instructions exactly as specified in EASA AD 2007-0148 and the applicable Airbus service bulletins. The CASA AD itself does not specify method or interval; the EASA AD does.

Step 3 - Inspection and immediate action protocol

• Conduct the required Wing Rib 6 inspections at the intervals or thresholds specified in the EASA AD, noting that Amendment 1 decreased the inspection threshold (Background). If an inspection identifies cracking or other damage, immediately contact Airbus before further flight (Requirement). Do not return the aircraft to service until Airbus provides direction.

Step 4 - Repairs and modifications

• Where the EASA AD or Airbus SBs require repair or modification, perform the work using the specified repair solutions or modifications. Note Amendment 2’s instruction: install a reinforcing plate on wings not already repaired in accordance with repair solutions R572-57023 or R572-57026 (Background). If the wing has one of those repair solutions, the reinforcing plate requirement is not mandated by Amendment 2; document the presence of those repairs.

Step 5 - Documentation and proofs

• Maintain contemporaneous records that demonstrate:
  • production modification status (41114, 44599, and any 53883 or 54432),
  • service bulletin incorporation status on each wing,
  • the date and findings of inspections performed under the EASA AD,
  • communications with Airbus where damage was found, and Airbus’ instructions,
  • records of any repairs, repair solution references (e.g. R572-57023/R572-57026), and installations of reinforcing plates. The AD places duties linked to production/modification status and repair solutions; these records form the necessary proof of compliance.

Step 6 - Monitor amendments and EASA approvals

• Track any further amendments to the CASA AD and any revisions to EASA AD 2007-0148 and the referenced Airbus service material. The CASA AD allows reliance on “later EASA approved revisions” of the referenced Airbus documents (Note). Use only EASA-approved revisions where permitted.

Step 7 - Operational planning

• Plan maintenance windows and operations to accommodate potential grounding if cracking is discovered, since the operator must contact Airbus before further flight (Requirement). Incorporate contingency plans for critical route coverage if inspections reveal damage needing immediate repair or modification.

Step 8 - Liaise with regulator and Airbus

• Keep CASA and, where relevant, local continuing airworthiness authorities informed of significant findings and of corrective actions taken. Where the AD requires contacting Airbus before further flight (Requirement), obtain and retain Airbus’ written direction as part of the compliance record.

Summary checklist (directly from the AD)

• Confirm applicability by checking modification and SB incorporation records (Applicability).
• Perform inspections and corrective actions in accordance with EASA AD 2007-0148 dated 22 May 2007 (Requirement).
• If cracking or other damage is found, contact Airbus before further flight (Requirement).
• Use Airbus All Operator Telex and the listed Service Bulletins, or later EASA-approved revisions (Note).
• Apply amendment-specific obligations: decreased thresholds and repair/modification options (Amendment 1), reinforcing plate installation unless specific repairs applied (Amendment 2), and exclusion for aircraft with MOD 54432 installed in production on both wings (Amendment 3) (Background).

Following these steps grounded in the AD text will align an operator’s actions with the AD’s stated compliance obligations and the referenced EASA and Airbus technical material.