Applicability: The AD applies to Textron Aviation (Cessna) 208 and 208B model aircraft that are approved for operation under regulation 174B(2)(d) or regulation 175A(1)(d) of the Civil Aviation Regulations 1988. The AD then limits the covered fleet by serial number: 20800001 through 20800350 for Cessna 208, and 208B0001 through 208B0919 for Cessna 208B. The AD therefore combines type/model eligibility with approval status and specific serial number ranges to define a clear population.

Mandatory service bulletin incorporation: The AD makes compliance with Cessna Service Bulletin CAB01-15 compulsory for the specified aircraft, and references the service bulletin “as in force at the commencement of this AD.” That phrase imports the contents of the service bulletin current at the AD’s commencement date into the regulatory requirement. The AD does not reproduce the service bulletin; it requires that the installation be performed in accordance with that bulletin.

Installation requirement: The substantive technical action required is the installation of a frangible/shear wire that ties the Emergency Power Lever to the pedestal cover. The AD records this as the specific intervention to address an identified safety concern following an incident involving use of the EPL.

Compliance timeframe: Unless already done, the installation must occur within six months from the effective date of the directive. The AD commences on 8 February 2019, so the compliance deadline runs from that date.

Cross-reference to previous AD: Note 2 states expressly that compliance with AD/CESSNA 208/18 constitutes compliance with this amendment. That makes the amendment backward-compatible for operators who have already complied with the earlier AD.

Maintenance manual linkage: Note 1 directs operators to the aircraft maintenance manual for the procedures to be followed when the frangible/shear wire is found broken. The maintenance manual therefore retains procedural authority for post-breakage action.

Origin and rationale: The background records a specific chain: following an incident involving the use of the EPL, the Australian Transport Safety Bureau recommended fitment of the frangible/shear wire. The AD records that the fitment will “help ensure appropriate maintenance actions when the EPL has been used for any reason.”

Amendment purpose: The AD is labelled “Amdt 1” and includes a statement that the amendment’s purpose is to align the AD’s applicability with that of Cessna SB CAB01-15 as in force at commencement. The document therefore both implements a safety measure and synchronises the AD’s scope with the manufacturer’s service bulletin.

Delegation and commencement: The instrument is signed by a CASA delegate, Pieter van Dijk, with the signature date 29 January 2019 and the stated commencement date 8 February 2019.

Operators and owners: The primary economic and operational burden falls on the owners and operators of the specific Textron Aviation (Cessna) 208 and 208B aeroplanes that meet both the regulatory approval criteria and the serial number ranges listed. The AD text limits applicability to aircraft “approved for operation under regulation 174B(2)(d) or regulation 175A(1)(d) of the Civil Aviation Regulations 1988,” thereby excluding aircraft not operating under those approvals. For the included aircraft, the operator or owner must ensure installation of the frangible/shear wire within the specified six month window unless the action has already been accomplished.

Maintenance organisations and certifying staff: The AD requires installation “in accordance with Cessna Service Bulletin CAB01-15,” which means maintenance organisations, licensed maintenance engineers and certifying staff are responsible for carrying out the technical work to the standard specified in the service bulletin. Note 1 refers operators and maintainers to the aircraft maintenance manual for actions when the wire is found broken. That allocates specific procedural duties to those performing maintenance and to persons authorised to release the aircraft to service.

Regulatory staff: CASA personnel and the delegate named on the document are the issuing authority. The AD’s commencement date and the note that compliance with a prior AD constitutes compliance with this AD provide CASA with a clear compliance baseline to assess whether affected aircraft meet the directive.

Parts suppliers and logistics: The requirement to install a frangible/shear wire to a pedestal cover will engage suppliers of the specified parts if the wire is not a standard part already in stock. The AD imports the exact installation method from the service bulletin, so suppliers and maintenance organisations need access to that SB version “as in force at the commencement of this AD.”

Design approval holders and manufacturer: Textron Aviation (Cessna) is indirectly implicated because the AD incorporates its service bulletin. The AD aligns regulatory applicability with the service bulletin’s applicability; the amendment statement explicitly records the alignment purpose.

Flight operations and scheduling: Operators will face operational effects if aircraft require time out of service for installation or for the maintenance actions referenced in the maintenance manual where the wire is found broken. The AD does not itself state operational grounding or flight restrictions, but the requirement to accomplish the installation within six months can affect scheduling, availability and planning for the affected aircraft.

Third parties and investigators: The Australian Transport Safety Bureau is referenced as the body that recommended the fitment after an incident. While the AD does not create ongoing obligations for the ATSB, its background provides the investigatory origin of the measure.

Duties established by the AD

• Install the frangible/shear wire that ties the Emergency Power Lever to the pedestal cover. The AD specifies the installation is to be “in accordance with Cessna Service Bulletin (SB) CAB01-15 as in force at the commencement of this AD.” That makes the technical content of the current SB binding for the regulated population.
• Comply within six months from the effective date of the directive, unless the action has already been accomplished. The AD commences on 8 February 2019. Therefore, affected aircraft must have installation complete by the deadline specified in the AD’s compliance clause.
• Follow the aircraft maintenance manual for procedures where the frangible/shear wire is found broken, as Note 1 directs maintainers and operators to the maintenance manual for actions to be followed in that circumstance.

Rights and procedural elements present or absent in the AD

• The AD text does not set out any appeal, exemption or extension mechanism within the document itself. It neither lists administrative review steps nor prescribes mechanisms for requesting relief from the compliance requirement. The AD does state that compliance with the earlier AD/CESSNA 208/18 constitutes compliance with this AD, effectively recognising prior compliance.
• The AD does not state any entitlement to compensation, transitional relief, or financial assistance for operators to meet the installation requirement.
• The AD does not reproduce the Service Bulletin; it requires compliance with whichever version is current at commencement. Operators therefore have the right to consult the SB as “in force at the commencement of this AD” to determine exact installation steps, but the AD does not provide the SB text or an explicit mechanism for accessing the bulletin within the document.

Allocation of responsibilities

• The practical responsibility to ensure compliance lies with aircraft operators and maintenance organisations, who must arrange and accomplish the installation within the specified timeframe and follow the maintenance manual when the wire is found broken.
• The delegate of CASA is the issuing authority; the document is signed by Pieter van Dijk, Delegate of the Civil Aviation Safety Authority, dated 29 January 2019, and the AD records its commencement date as 8 February 2019.

Documentation and proof

• While the AD does not specify record-keeping requirements inside the text, the directive’s mandatory nature and reference to the maintenance manual imply that installed modifications and subsequent actions follow standard maintenance practice. The AD specifically makes the SB’s technical instructions binding; that SB will likely include instructions for certification of the task, but the AD itself does not reproduce such documentation steps.

Interplay with prior compliance

• Note 2 provides that compliance with AD/CESSNA 208/18 constitutes compliance with this AD. That creates a right for operators who complied earlier to treat the requirement as already satisfied under the amended directive.

Textual scope of enforcement content

• The AD itself sets out a mandatory requirement and a compliance deadline but does not include express penalty provisions or a detailed enforcement regime in the text provided. It requires installation “within 6 months from the effective date of this Directive” and states the commencement date as 8 February 2019. There is no textual provision in the supplied document that describes fines, sanctions, or administrative procedures for non-compliance.

Enforcement signatory

• The instrument is signed by a CASA delegate, Pieter van Dijk, on 29 January 2019. The signature indicates issuance by the national aviation safety regulator, which commonly implies that regulatory compliance will be monitored by the regulator, but the AD contains no internal description of monitoring or enforcement steps.

Observable practical enforcement levers implied by the AD

• Mandatory compliance within a fixed timeframe creates a clear regulatory expectation. Practical enforcement is likely to proceed through standard regulatory channels consistent with CASA practice, but the AD text itself does not describe those channels. The AD’s requirement that installations be done in accordance with Cessna SB CAB01-15 places a technical specification into the compliance assessment; inspectors or auditors verifying compliance would check that the installation matches the SB.

Limits on enforcement detail in the instrument

• The AD does not state who bears the cost of non-compliance, whether non-compliance will lead to grounding of the aircraft, or what administrative sanctions will be applied. Those enforcement consequences are not described in the supplied text, and therefore no claims about them can be made on the basis of this document alone.

Documented equivalence with prior directive

• Note 2 records that compliance with the earlier AD/CESSNA 208/18 constitutes compliance with this AD. That reduces enforcement friction for aircraft already compliant; regulators verifying compliance should accept earlier compliance under AD/CESSNA 208/18 as meeting this AD’s obligations.

What the AD does not say

• There is no explicit mention of penalties, civil liabilities or criminal sanctions in the AD’s text. The document also does not specify complaint, review or appeal mechanisms for parties affected by the directive. Any enforcement or penalty mechanisms resting outside the AD are not set out in the supplied text and cannot be inferred from it.

Direct statutory references

• The AD’s applicability is expressly limited to aircraft that are “approved for operation under regulation 174B(2)(d) or regulation 175A(1)(d) of the Civil Aviation Regulations 1988,” thereby tying the directive’s scope to specified approvals within the Civil Aviation Regulations 1988. The AD therefore interacts with those regulations by using their approval categories as eligibility gates for the directive’s mandatory measures.

Incorporation by reference of manufacturer material

• The AD makes compliance with Cessna Service Bulletin CAB01-15 mandatory “as in force at the commencement of this AD.” This imports the manufacturer’s service bulletin into the regulatory framework for the affected aircraft. The AD therefore creates a regulatory obligation to meet a specific manufacturer-prescribed method, linking CASA’s regulatory directive to the manufacturer’s technical documentation.

Interplay with prior AD

• Note 2 makes an explicit cross-reference to AD/CESSNA 208/18, stating that compliance with that AD constitutes compliance with this AD. This alignment means the amendment does not create additional or duplicative obligations for operators who had already complied with the earlier directive, and it prevents overlapping obligations to the extent of equivalence.

Maintenance manual reference

• Note 1 directs maintainers and operators to the aircraft maintenance manual for actions when the frangible/shear wire is found broken. The AD therefore defers to the aircraft’s maintenance manual for post-installation and maintenance procedures, linking the AD’s prescriptive installation requirement to the continuing operational requirements captured in the maintenance documentation.

Omissions in cross-legal detail

• The AD does not describe how it interacts with other statutory regimes such as general aviation safety rules outside the Civil Aviation Regulations 1988, occupational health and safety laws governing maintenance workplaces, procurement or contract law, or insurance and liability regimes. The instrument confines its legal references to the Civil Aviation Regulations cited and to the manufacturer service bulletin and maintenance manual.

Administrative alignment

• The amendment statement indicates the reason for the amendment is to “align the AD applicability with that of Cessna SB CAB01-15 as in force at the commencement of this AD.” This alignment is an explicit interaction between regulatory text and manufacturer material, ensuring the AD’s applicability corresponds with the SB’s scope.

Practical cross-checks for operators

• Operators should cross-check aircraft approval status under reg 174B(2)(d) or 175A(1)(d), their aircraft serial numbers, the version of Cessna SB CAB01-15 that was “in force at commencement,” and any prior compliance with AD/CESSNA 208/18 to determine their exact regulatory obligations under this AD.

Document labels and amendment purpose

• The document header and footer identify the instrument as “AD/CESSNA 208/18 Amdt 1.” The accompanying paragraph set out in the material states: “This Amendment is issued to align the AD applicability with that of Cessna SB CAB01-15 as in force at the commencement of this AD.” That is an explicit, narrow purpose statement for the amendment rather than a wholesale technical change.

Timing and administrative dates

• The AD is dated and signed by Pieter van Dijk, Delegate of the Civil Aviation Safety Authority, on 29 January 2019. The AD records that it “commences on 8 February 2019,” and the compliance section sets a six month timeframe from the effective date of the directive for the required action unless already accomplished.

Relationship to earlier directive

• Note 2 states that “Compliance with AD/CESSNA 208/18 constitutes compliance with this AD,” indicating this Amendment 1 is not adding substantive new work for aircraft that already complied with the initial AD/CESSNA 208/18. The amendment therefore functions primarily to align applicability provisions rather than to change the technical requirement.

Versioning of the incorporated service bulletin

• The AD’s instruction to follow “Cessna Service Bulletin (SB) CAB01-15 as in force at the commencement of this AD” fixes the SB version that operators must follow to the version current at the AD commencement. The amendment explicitly aligns the AD's applicability with the SB as it stood at that commencement, which is a form of version control by regulatory instrument.

Record in the document

• The text included in the supplied material contains the amendment notation and the explanatory sentence about alignment with the SB. The AD is presented with header repetition of the AD identifier and the emergency power lever shear wire title. No other amendment iterations are recorded in the supplied text.

No detailed amendment log in the text

• The AD does not provide a multi-version log or track changes between the original AD and Amendment 1 beyond stating the alignment purpose and the equivalence for prior compliance. The supplied text does not set out prior dates or redlines of prior versions.

What is provable from the text

• From the supplied instrument we can state only that Amendment 1 was issued, signed on 29 January 2019, commences 8 February 2019, and has the explicit goal of aligning applicability with Cessna SB CAB01-15 as in force at commencement. The text does not contain further chronological amendments or later history.

Document record and absence of cases

• The supplied AD text includes no reference to litigation, court proceedings, tribunal decisions or challenges to the directive. It mentions the Australian Transport Safety Bureau recommendation that prompted the measure, but it does not record any legal disputes relating to the AD, the service bulletin, or the actions required.

Limits on what can be stated from the text

• Because the supplied material contains no litigation references, no cases can be named or summarised on the evidence of this document alone. Any assertion about judicial review, administrative appeal, or court enforcement would be outside the textual record and cannot be made here.

Implication for practitioners

• For lawyers or compliance professionals researching potential disputes, the document establishes the detailed operative steps of the AD, its dates, and its applicability. Those details are the necessary starting points for any challenge or compliance defence, but any litigation history would need to be established from external sources and is not present in the supplied instrument.

Applicability is conjunctive: regulatory approval plus serial number ranges

• The AD applies only to aircraft that satisfy both the approval criteria and the serial number ranges. The AD is not a blanket requirement for all Cessna 208/208B airframes; it is confined to those “approved for operation under regulation 174B(2)(d) or regulation 175A(1)(d) of the Civil Aviation Regulations 1988” and only the serial numbers specified. Operators may incorrectly assume an AD applies to their fleet; the AD’s wording requires careful cross-checking of approval status under the cited Civil Aviation Regulations and the serial number range.

“SB as in force at commencement” fixes which SB content is mandatory

• The AD requires compliance with Cessna SB CAB01-15 “as in force at the commencement of this AD.” That phrase fixes the required SB version to the one current at the AD commencement (8 February 2019). Future revisions of the SB after commencement are not automatically incorporated into the AD by that wording. Operators need to confirm the exact SB revision that was current at commencement rather than assuming the latest SB version always applies.

Note 2 equivalence with prior AD may engender confusion

• While Note 2 states “Compliance with AD/CESSNA 208/18 constitutes compliance with this AD,” operators must confirm whether their records demonstrate compliance with that earlier AD. The equivalence prevents duplication of work, but incomplete or poorly documented prior compliance could leave an operator uncertain whether their aircraft legally meet the amendment.

Maintenance manual linkage for broken wire actions

• Note 1 states “The aircraft maintenance manual details actions to be followed when the frangible/shear wire is found broken.” If workstations or operators do not have access to the maintenance manual or fail to follow the specified procedures, there may be a gap between installation and subsequent required maintenance outcomes. The AD does not reproduce those procedures; it delegates them to the maintenance manual.

Six month compliance window is absolute in the text

• The AD clearly states the compliance period of “within 6 months from the effective date of this Directive.” The AD does not specify an extension mechanism or staged compliance in the supplied text. Operators who delay planning or parts procurement risk failing to meet that textual deadline.

Document access and versioning risk

• Because the AD imports the Cessna SB “as in force at commencement,” there is a risk of misidentifying which SB version that is unless operators obtain contemporaneous copies or authoritative confirmation. The AD itself does not attach the SB or specify the revision identifier that was current at commencement.

No express enforcement or penalties set out

• The AD contains no specific penalty language in the supplied text. Operators and advisers should not assume particular enforcement outcomes from the AD text alone. Practical enforcement consequences may exist under other regulatory provisions, but they are not spelled out in the AD as provided.

Possible operational downtime

• The AD requires a physical installation procedure. Note 1 highlights that when the frangible/shear wire is found broken, the maintenance manual contains instructions to be followed. Both the initial installation and any post-breakage procedures may require aircraft out-of-service time. The AD does not quantify downtime or provide guidance on minimising operational impact.

Record-keeping not specified in the AD text

• The AD does not itself specify documentation steps to demonstrate compliance beyond referencing the SB. Operators should not assume the AD absolves them of any maintenance record-keeping obligations that normally accompany modifications; however, such record obligations are not stated in the AD text.

Step 1, determine applicability precisely

• Confirm your aircraft’s model and serial number. The AD applies only to Cessna 208 aircraft with serial numbers 20800001 through 20800350 and Cessna 208B aircraft with serial numbers 208B0001 through 208B0919. Confirm the aircraft is approved for operation under regulation 174B(2)(d) or regulation 175A(1)(d) of the Civil Aviation Regulations 1988. If your aircraft does not meet both the approval and serial number tests, the AD as written does not apply.

Step 2, confirm prior compliance under AD/CESSNA 208/18

• Check maintenance records to determine whether the aircraft already complied with AD/CESSNA 208/18. Note 2 in the AD expressly states that prior compliance with that AD constitutes compliance with this amendment. If you have documented compliance with AD/CESSNA 208/18, you can treat this AD as satisfied. If records are incomplete, obtain or reconstruct documentation showing when and how the earlier AD was complied with.

Step 3, obtain Cessna Service Bulletin CAB01-15 as in force at commencement

• The AD makes mandatory the installation “in accordance with Cessna Service Bulletin (SB) CAB01-15 as in force at the commencement of this AD.” Obtain the exact SB revision that was in effect at the AD commencement date (8 February 2019) and confirm the installation procedures, parts list, torque values, and certification notes contained in that specific version.

Step 4, arrange authorised maintenance

• Engage an appropriately authorised maintenance organisation or licensed aircraft maintenance engineer to perform the installation in accordance with the SB. Ensure the maintenance provider has access to the aircraft maintenance manual and understands the Note 1 procedures to be followed if the frangible/shear wire is found broken.

Step 5, plan for scheduling and parts

• Source the frangible/shear wire and any ancillary parts specified in the SB. Schedule the aircraft for maintenance within the six month compliance window. Allow additional time for potential follow-up actions listed in the maintenance manual if the wire is found broken during inspection or removal.

Step 6, perform the installation and associated checks

• Complete the installation strictly following the SB instructions “as in force at commencement.” Complete any post-installation checks, functional tests and inspections called for in the SB and the maintenance manual. Follow the maintenance manual’s procedures if the frangible/shear wire is found broken at any stage.

Step 7, certify and document the work

• Obtain the necessary workmanship certification from the authorised maintenance organisation or certifying engineer. Although the AD does not itself list record-keeping steps, maintainers should enter the modification and any follow-up actions into the aircraft’s maintenance records consistent with standard maintenance practice and the SB’s closing instructions, to demonstrate compliance.

Step 8, confirm compliance status vis-à-vis the AD

• Maintain a compliance file that ties the work performed to this AD and to the SB version used. If compliance was effected under AD/CESSNA 208/18, retain that evidence in case an inspector relies on Note 2. Ensure that records indicate the SB revision used and the date of completion within the six month window from the AD’s effective date.

Step 9, prepare for post-installation inspections or incidents

• Because Note 1 points to the maintenance manual for actions where the frangible/shear wire is found broken, ensure operators and maintenance staff are briefed on those procedures and that spares and resources are available to perform any required corrective action promptly.

Step 10, if in doubt, consult CASA or qualified counsel

• The AD contains precise technical and applicability language tied to both Civil Aviation Regulations and a manufacturer’s SB. If there is uncertainty about applicability, prior compliance equivalence, SB revision identity, or required documentation, seek clarification from CASA or obtain legal/advisory guidance. The AD itself does not provide appeal or exemption routes in its text, so clarifying obligations and compliance status in advance reduces risk of non-conformance with the six month deadline.

Practical check-list

• Confirm serial number and regulatory approval status under reg 174B(2)(d) or 175A(1)(d).
• Locate and retain the Cessna SB CAB01-15 revision current as at 8 February 2019.
• Arrange installation with an authorised maintainer and schedule within six months from the AD effective date.
• Follow maintenance manual procedures if the wire is broken during installation or inspection.
• Retain maintenance certification and records linking the work to this AD or to prior AD/CESSNA 208/18 compliance as applicable.

These steps follow directly from the instrument’s sections labelled Applicability, Requirement, Compliance, and Notes 1 and 2, and from the stated commencement and signature dates in the AD text.