AD/CESSNA 208/23 - Wing Wire Bundles

Applicability and scope. The AD applies to Model 208 and Model 208B aeroplanes within the serial number ranges specified in the Directive: 208 serial numbers 20800001 through 20800415, and 208B serial numbers 208B0001 through 208B1299 (see the Applicability table). The Directive therefore targets a numerically bounded fleet subset rather than all 208/208B airframes.

Reference to manufacturer's Service Bulletin. The technical method for inspection and corrective action is not set out in detail in the AD; the AD requires operators to follow Cessna Aircraft Company Service Bulletin CAB08-02 dated 4 February 2008. This creates a normative link to an external technical document for the how-to steps of inspection, repair and attachment of wire bundles.

Two-tier action structure. The AD separates obligations into two discrete steps. Requirement 1 is an initial inspection for loose and damaged wiring at anchor attach points. Requirement 2 is contingent and prescriptive: it specifies what to do if the inspection reveals damaged wires (repair/replace and reattach per the Service Bulletin) or loosely attached wires (secure and reattach hardware per the Service Bulletin). The AD therefore compels both detection and corrective action when needed.

Compliance timing. The AD imposes a compliance window for the initial inspection (Requirement 1): within 200 hours time-in-service after 28 August 2008 or within 12 months after 28 August 2008, whichever occurs first. It imposes an immediate operational restriction for discovered defects: corrective actions under Requirement 2 must be completed “before further flight,” meaning an aircraft found to have defects cannot lawfully continue flight until the corrective action is completed.

Cross-acceptance of revisions via FAA AMOC. The AD accepts later revisions of CAB08-02 only where those revisions have been approved by the FAA as an AMOC to FAA AD 2008-13-06. That creates an inter-agency cross-reference: CASA’s Directive defers to FAA approval for acceptance of Service Bulletin revisions as an alternative means of compliance.

Background hazard description. The AD’s background section records that the FAA received reports of chafed wiring in wing wire bundles containing systems such as the auto-control wing de-ice system, fuel quantity indication and low fuel annunciation, and that the condition could result in incorrect fuel quantity indications, loss of low fuel annunciations, or loss of the auto-control wing de-ice system. The Directive states its purpose as detecting and correcting damaged wiring in left and right wing electrical wire bundles.

Authority and effective date. The AD is issued by CASA and signed by a delegate, James Coyne, and states an effective date of 28 August 2008. The AD format and the references to FAA AD 2008-13-06 indicate that the CASA Directive parallels FAA action on the same technical issue.

Operational effect. Operationally, the AD obliges the owner/operator to schedule the inspection within the stated time window and, if defects are found, to ground the aircraft until repairs are completed. The AD ties compliance views to technical procedures set out by the manufacturer and accepted by aviation regulators.

Operators and owners within the listed serial-number ranges. The Directive applies to aeroplanes of model 208 and 208B with serial numbers specifically listed: 20800001 through 20800415 and 208B0001 through 208B1299. Those owners/operators must comply with the inspection and corrective-action requirements in the Directive. The Applicability table in the source enumerates the precise models and serial-number ranges.

Maintenance organisations and technicians. The AD delegates the technical execution of both the inspection and any repair/attachment work to parties competent to follow the Cessna Service Bulletin CAB08-02. While the Directive does not explicitly state who must perform the work, the requirement to follow the manufacturer’s Service Bulletin implies use of appropriately certificated maintenance personnel and facilities capable of performing wiring inspection and repairs to the standards described in CAB08-02. The AD’s “before further flight” corrective requirement also places an onus on maintenance organisations to validate airworthiness after repairs.

Flight operators with scheduled services. Operators with scheduled flights using affected airframes will be constrained by the compliance windows and by the “before further flight” requirement that applies if defects are found. If defects are discovered during the inspection, the aircraft must have repairs completed before it may resume flight, potentially causing aircraft on ground (AOG) events and operational disruption. The AD does not itself provide exemptions or deferred relief beyond the stated compliance windows.

Regulatory authorities. CASA, through the AD, exercises its regulatory authority over Australian-registered aeroplanes. The Directive is signed by a CASA delegate (James Coyne) and becomes effective on 28 August 2008. The AD also interacts with the FAA because it references FAA AD 2008-13-06 and accepts FAA-approved AMOCs for later SB revisions; this creates a regulatory link between CASA and FAA determinations on AMOCs and Service Bulletin revisions.

Manufacturers and service bulletin authors. Cessna, as the author of Service Bulletin CAB08-02, is materially implicated because the AD makes CAB08-02 the mandatory technical reference for inspection and corrective action. Any subsequent CAB08-02 revisions will be admissible for compliance only if the FAA approves them as an AMOC to FAA AD 2008-13-06. That means Cessna’s future revisions may be relied on by operators only following FAA AMOC approval.

No explicit mention of lessees, insurers or third parties. The AD’s text focuses on the aircraft models, serial numbers, the Service Bulletin and compliance windows. It does not name lessees, insurers or other commercial parties, but they will be affected in practice through their contractual relationships with owners/operators; such consequences are not addressed in the Directive text.

Mandatory inspection duty. The primary duty imposed by the AD is Requirement 1: operators of applicable Model 208 and 208B aeroplanes must inspect the left and right wing electrical wire bundles at the anchor attach points for loose and damaged wiring in accordance with Service Bulletin CAB08-02 dated 4 February 2008. This is a mandatory obligation, with a specified timeframe: within the next 200 hours time-in-service after 28 August 2008 or within 12 months after 28 August 2008, whichever occurs first.

Corrective action duty. Requirement 2 is a contingent duty that follows from the inspection outcome. It sets out two discrete corrective obligations:

• If damaged wires are found, the operator must repair or replace the damaged wires and properly attach the wire bundle in accordance with CAB08-02.
• If loosely attached wires are found, the operator must secure any loosely attached wires and properly attach the wire bundle supporting hardware in accordance with CAB08-02.

Immediate flight limitation tied to defects. The Directive stipulates that corrective actions under Requirement 2 must be completed “before further flight” after the Requirement 1 inspection. The plain effect of this is an operational constraint: an aircraft found to have damaged or loosely attached wiring at anchor attach points cannot lawfully proceed to further flight until the specified corrective measures are carried out in accordance with the Service Bulletin.

Conformity to the Service Bulletin. The Directive makes adherence to CAB08-02 the standard of compliance. Rights to adopt other methods are limited: later revisions of CAB08-02 are acceptable only if the FAA has approved them as an AMOC to FAA AD 2008-13-06. The Directive therefore gives operators recourse to later, FAA-approved revisions of the SB, but does not authorise alternative repair methods or procedures except as described in the SB or as approved via FAA AMOC for the FAA AD and accepted by this Directive.

Timing and scheduling rights/obligations. Operators have a defined compliance window for the initial inspection: either 200 hours time-in-service or 12 months after 28 August 2008, whichever occurs first. This provides two possible bases for scheduling the inspection,hours-in-service or a calendar deadline,and operators must determine which arrives first for each affected aeroplane.

Authority and effective date. The Directive becomes effective on 28 August 2008, and it is issued by CASA, signed by a CASA delegate. That places formal responsibility for compliance on owners/operators from that effective date.

No explicit mitigations or exemptions in-text. The AD does not list alternative compliance paths, waivers or exemptions within its body other than the allowance for FAA-approved AMOC revisions to the Service Bulletin. Rights to appeal, apply for relief, or request alternative compliance are not specified in the Directive’s text; operators seeking alternative arrangements would need to look to CASA’s general administrative processes outside the text of the AD.

Record of the background hazard. The AD records the hazard and the intended safety purpose,detecting and correcting damaged wiring to prevent incorrect fuel indications, loss of low fuel annunciation, or loss of the auto-control wing de-ice system,but it does not create separate obligations tied to the background statement beyond the inspection and corrective steps.

No specific penalties or enforcement mechanisms are stated in the Directive. The AD sets mandatory inspection and corrective-action requirements and an effective date, and it is issued by the Civil Aviation Safety Authority (CASA) and signed by a CASA delegate (James Coyne). The Directive does not itself specify any pecuniary penalties, administrative sanctions, or criminal sanctions within its text.

Operational enforcement implications implicit in the “before further flight” requirement. The Directive’s operability condition requiring corrective action “before further flight” effectively enforces compliance by denying lawful flight operations where necessary repairs have not been completed. In practical terms, this creates immediate operational consequences for non-compliance: an aircraft found to have damaged or loosely attached wiring under the inspection may be unable to continue service until repairs are completed.

Cross-reference to FAA AD. The Directive references FAA AD 2008-13-06 and notes that the FAA AD is “referred” and that FAA-approved AMOCs to that FAA AD are acceptable for compliance with equivalent Requirements of this Directive. That creates a compliance route tied to FAA determinations. The text does not specify whether CASA will accept other forms of alternate compliance, or how CASA will manage AMOC administrative processes; the Directive only records the acceptance of FAA-approved AMOCs for Service Bulletin revisions.

Administrative provenance. The AD is signed by a CASA delegate and contains an effective date. While the Directive does not state enforcement procedures, the administrative provenance indicates that CASA has issued the regulatory instrument and that enforcement action, if any, would proceed under CASA’s regulatory powers outside the AD text. The Directive itself does not describe how CASA will detect non-compliance, nor does it state whether CASA will require operators to lodge compliance reports, logbooks or other evidence; the Directive likewise contains no inspection reporting requirement in its text.

Absence of penalty detail. Because this Directive does not enumerate penalties, operators and advisers seeking to understand legal exposure for non-compliance will need to consult CASA’s regulatory framework and relevant statutes, instruments or guidance external to the Directive text to determine the range of potential administrative or criminal consequences. The Directive itself provides the operational requirement but not the enforcement or penalty catalogue.

Reference to FAA AD 2008-13-06. The Directive explicitly refers to FAA AD 2008-13-06 (Amendment 39-15569). The AD indicates that FAA AD 2008-13-06 “refers” and that later revisions of Service Bulletin CAB08-02 approved by the FAA as an AMOC to FAA AD 2008-13-06 are acceptable for compliance with the equivalent Requirements of this Directive. That creates a direct regulatory link between this CASA AD and the FAA AD: FAA action on AMOCs and SB revisions informs acceptable alternative methods of compliance under this CASA Directive.

Deference to manufacturer Service Bulletin. The Directive makes Cessna Service Bulletin CAB08-02 the operative technical standard for inspection and corrective actions. That ties CASA’s regulatory prescription to the manufacturer’s technical instructions, so that compliance requires following the Service Bulletin’s methods, materials and attachment procedures as published on 4 February 2008, or later versions approved by the FAA as AMOC to the FAA AD. The Service Bulletin therefore functions as delegated technical detail within the CASA regulatory instrument.

Inter-agency cross-acceptance and limited AMOC pathway. The AD’s acceptance of FAA-approved AMOCs to FAA AD 2008-13-06 indicates that CASA will accept FAA determinations on the Service Bulletin’s later revisions if those revisions are ratified through the FAA AMOC process. The AD does not state whether CASA will accept other foreign regulator approvals or its own AMOC process, nor does it define whether CASA would itself approve AMOCs distinct from FAA approvals; the text only records that FAA-approved AMOCs for the FAA AD are “considered acceptable” for compliance with this Directive.

Implication for broader regulatory duties. The Directive addresses a specific safety defect and contains mandatory corrective steps. It does not purport to displace or modify other regulatory obligations applicable to operators, maintenance organisations or certificates issued by CASA. The AD sets a discrete compliance obligation in the context of the broader civil aviation regulatory framework, but it does not, within its text, articulate how compliance reporting should be done or how the AD interacts with, for example, maintenance release or continuing airworthiness obligations. Those interactions must be resolved by reference to CASA’s general regulatory environment outside the AD text.

No mention of international registration or foreign-registered aircraft. The Directive applies to aeroplanes by model and serial number; it does not deal with foreign-registered aircraft or with export/import rules. Its cross-reference to the FAA AD suggests a harmonised safety response between CASA and the FAA on the same technical issue, but the AD does not set out how CASA will treat aircraft registered outside Australia.

No statutory amendment or supersession language. The Directive does not state that it amends, revokes or supersedes other CASA instruments. It is presented as a discrete AD with its own effective date and requirements; any interplay with earlier or later CASA instruments is not recorded in the text.

Issuance and effective dates in the Directive. The AD is dated 9/2008 in its header, and the text records that the Directive becomes effective on 28 August 2008. The cover signature block is dated 16 July 2008 and signed by James Coyne, Delegate of the Civil Aviation Safety Authority, indicating the administrative origin and the lead-up to the effective date.

Service Bulletin and FAA AD provenance. The Directive is based on Cessna Service Bulletin CAB08-02 dated 4 February 2008, and it explicitly references FAA AD 2008-13-06 (Amendment 39-15569). The AD states that later revisions of CAB08-02 that have been approved by the FAA as an AMOC to FAA AD 2008-13-06 “are considered acceptable for compliance with the equivalent Requirements of this Directive.” That clause creates a limited amendment pathway for technical methods: subsequent Service Bulletin revisions do not automatically amend the AD, but they may be adopted for compliance if the FAA approves them as AMOCs to the FAA AD.

No in-text history of prior CASA amendments. The Directive itself does not include a log of prior amendments to this AD because the AD appears to be the initial CASA instrument on this specific wing wire bundle issue. The document does not list earlier CASA ADs on the same topic, nor does it present any history of changes to this particular Directive.

No later CASA revisions recorded in the source. The source text provides no record of later CASA amendments, supersessions, cancellations or revisions to AD/CESSNA 208/23. It only establishes the initial issuance, effective date and the acceptance of FAA-approved AMOCs for SB revisions.

Administrative signature and date. The AD is signed and dated by a CASA delegate (16 July 2008). The header lists the AD identifier AD/CESSNA 208/23 with the date marker 9/2008. These elements together create the internal provenance and timing record for the Directive.

Implication for users. Operators seeking to determine whether the Directive has been amended since its effective date would need to consult CASA’s current AD registry or publications outside the AD text supplied. The AD itself contains no internal amendment log or subsequent change-tracking information.

No litigation or judicial decisions are recorded in the Directive’s text. The AD contains a background statement and the operational requirements, but it does not mention any court proceedings, appeals, or judicial review connected to this Directive or to the underlying FAA AD or Service Bulletin. The source provides no case names, decisions, or litigation references.

Absent litigation references. Because the Directive does not discuss litigation, any inquiry into legal challenges, enforcement proceedings, or judicial interpretation will require searching external sources such as CASA enforcement records, court databases, or administrative review outcomes. The Directive does not itself provide a record of dispute or adjudication.

Administrative channels outside the AD text. The absence of litigation references in the AD is not an assertion that no disputes have ever arisen; it simply reflects that the instrument is an administrative safety directive, not a litigation record. Operators wishing to challenge or seek relief from the Directive would need to rely on CASA’s published procedural avenues or general administrative law remedies, none of which are described in the AD itself.

Reference to FAA AD only. The AD references FAA AD 2008-13-06, but contains no indication in the text of any litigation associated with that FAA AD. Any legal challenges to the FAA AD would be recorded in other fora and are not addressed in the text of CASA’s Directive.

Narrow scope of inspection location. The AD requires inspection “at the anchor attach points” of the left and right wing electrical wire bundles. That is a targeted inspection locus; the Directive does not require a complete wire-bundle examination beyond the anchor attach points. Operators should therefore be conscious that the AD’s mandated inspection is specific to anchor attach points; if other wiring areas are of concern, those are not mandated by this AD text.

Contingent grounding via “before further flight.” The Requirement 2 corrective action must be completed “before further flight.” The plain operational effect is that discovery of damaged or loosely attached wiring will require immediate corrective work and may ground the aeroplane until the Service Bulletin-prescribed repairs or securements are effected. Operators should plan for potential AOG costs and schedule disruption when arranging the inspection, because defects will not be permitted to remain deferred past the end of the inspection event.

Dual compliance triggers: hours or months. The initial inspection deadline is the earlier of 200 hours time-in-service after 28 August 2008 or 12 months after 28 August 2008. Operators must calculate both triggers for each airframe and use whichever arrives first. In low-utilisation aircraft, the calendar 12-month deadline may arrive before 200 hours; in high-utilisation aircraft, 200 hours TIS may be the binding constraint. Miscalculation risks a missed compliance window.

AMOC dependence for later SB revisions. The AD accepts later CAB08-02 revisions only where those revisions are “approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2008-13-06.” That requires operators, manufacturers, or maintenance providers to confirm FAA AMOC approval before relying on a later SB revision for compliance with this CASA AD. Assuming a later SB revision is available, it will not be automatically acceptable for CASA compliance unless the FAA has approved it as the stated AMOC for the FAA AD.

Service Bulletin as normative method. The Service Bulletin CAB08-02 dated 4 February 2008 is mandated as the procedure for both inspection and corrective action. Operators who attempt to use alternative repair techniques or different parts without FAA AMOC acceptance risk non-compliance with the Directive, because the AD ties compliance explicitly to CAB08-02 or FAA-approved AMOC revisions.

No explicit record-keeping or reporting requirement in the AD. The Directive does not contain an express requirement that operators submit compliance reports to CASA or that inspections/corrective actions be recorded in a specified format. Absence of such a clause does not obviate other regulatory record-keeping obligations under CASA rules; operators should not assume that no records are required by virtue of the AD’s silence.

Potential narrowness of applicability. The AD lists specific serial-number ranges. Aircraft outside those ranges are not covered by the AD as written. Operators with aircraft at the boundary of the listed serial numbers should verify serial numbers carefully because the Directive’s applicability is precise and serial-number-based.

No explicit enforcement or penalty detail in the AD. The Directive imposes duties but contains no clause describing how CASA will enforce compliance or what penalties will attach to breaches. That leaves operators to consult CASA’s broader enforcement regime for enforcement consequences; the AD itself provides no enforcement mechanics.

Reliance on FAA action for acceptance of SB revisions. The AD’s acceptance of FAA-approved AMOCs places a part of the compliance pathway outside CASA: operators and maintenance organisations may need to monitor FAA AMOC announcements, link those to the FAA AD, and determine whether a Service Bulletin revision has obtained the necessary FAA approval to be used for CASA compliance. That introduces an extra administrative step.

Identify affected aircraft. First, confirm whether a particular aeroplane falls within the AD’s Applicability serial-number ranges: Model 208 serial numbers 20800001 through 20800415; Model 208B serial numbers 208B0001 through 208B1299. Only those numbered aircraft are subject to the AD’s mandatory requirements.

Obtain and follow the Service Bulletin. Acquire Cessna Service Bulletin CAB08-02 dated 4 February 2008, and ensure the inspecting and repairing maintenance personnel have full access to and understanding of the SB’s procedures. The AD makes CAB08-02 the operative technical document for both inspection and corrective steps; following the SB verbatim is the route the Directive specifies for compliance.

Schedule the inspection within the AD’s timeframe. For each affected aircraft, schedule the Requirement 1 inspection within the earlier of (a) the next 200 hours time-in-service after 28 August 2008, or (b) 12 months after 28 August 2008. Determine which trigger applies , hours-in-service or calendar months , for each aircraft and schedule accordingly to avoid breaching the AD’s timing requirement.

Perform inspection at anchor attach points. Carry out the inspection required by Requirement 1 specifically at the left and right wing electrical wire bundle anchor attach points, checking for loose and damaged wiring, and do so in accordance with the inspection methodology in CAB08-02.

If defects are found, complete corrective work before further flight. If the inspection reveals damaged wires, repair or replace the damaged wires and properly attach the wire bundle in accordance with CAB08-02. If the inspection reveals wires that are loosely attached, secure them and properly attach the wire bundle supporting hardware per CAB08-02. The AD mandates that these corrective steps are completed “before further flight” following the inspection.

Coordinate maintenance resources for potential immediate rectification. Because Requirement 2 requires repairs before further flight, operators should ensure that appropriately rated maintenance personnel and spare parts are available or on-call to carry out repairs without undue delay when defects are discovered. Plan for potential AOG events and associated costs.

Confirm any use of later Service Bulletin revisions via FAA AMOC. If relying on a later revision of CAB08-02, ensure that the revision has been approved by the FAA as an AMOC to FAA AD 2008-13-06. The AD explicitly conditions acceptance of later SB revisions on FAA AMOC approval; absent that approval, the original CAB08-02 dated 4 February 2008 is the mandated reference.

Document the inspection and corrective actions in maintenance records. Although the AD does not specify a reporting procedure, good practice and typical regulatory expectations require logging the inspection and any corrective action in the aircraft maintenance records. Record dates, times-in-service at inspection, findings, parts used, who performed the work, and certification that repairs were made in conformity with CAB08-02 (or an FAA-approved AMOC revision). This documentation will support a maintenance release and demonstrate compliance in the event CASA seeks proof of action.

Verify the aircraft is airworthy before returning to service. After repairs or security work are completed, ensure the maintenance release process and any applicable post-maintenance checks in CAB08-02 are completed so that the aircraft meets airworthiness standards prior to further flight.

Monitor FAA and CASA communications for AMOCs or further ADs. Because the AD accepts FAA-approved AMOCs to the FAA AD for later SB revisions, operators should monitor FAA AD publications and CASA advisories for any AMOC approvals, subsequent AD revisions, or further directives that could affect compliance methods or timelines.

Coordinate with Cessna or authorised service centres for technical clarifications. Where the Service Bulletin’s instructions are unclear, or where a later repair technique is being considered, coordinate with Cessna or an authorised service centre to obtain clarifications and, if needed, seek an AMOC via the FAA AD process that would then be acceptable to this Directive.

Plan inspection timing to minimise operational disruption. Schedule inspections around planned maintenance checks or during planned downtimes to reduce the operational impact of potential corrective work. Because corrective work must be completed before further flight if defects are found, operators should not schedule the inspection immediately prior to critical revenue flights unless spare capacity or contingencies are in place.

Record the compliance trigger used. For audit and oversight purposes, note whether the inspection was completed under the “200 hours time-in-service” or “12 months” trigger. Make this clear in the maintenance record for transparency and for any future regulatory review.

Keep the AD text accessible. Retain a copy of AD/CESSNA 208/23 and the referenced CAB08-02 SB in the maintenance control file so that any inspector or auditor can verify that the inspection and corrective steps followed the mandated references.