AD/GENERAL/86 - Darwin Inspection and Testing Service Ultrasonic Inspection

The AD rests on four concrete concepts present in the source text: applicability to a defined cohort, a records‑review trigger, conditional re‑inspection by an authorised person, and expedited defect reporting. Applicability is strictly defined by time and actor, the AD applying to “All aircraft that have had Ultrasonic Inspection carried out by Darwin Inspection and Testing Service (DITS) in the nominated period, 1 January 2010 through 8 February 2013.” The records-review trigger is the first operative step: Requirement 1 obliges the operator to “Review the aircraft records to determine whether any Ultrasonic Inspection has been carried out and certified by DITS on the aircraft or any aeronautical product fitted to the aircraft in the nominated period.” The re‑inspection condition is binary, governed by whether the records indicate DITS work and whether a repeat inspection has been conducted by an authorised person: if both conditions are met there is no further action, if DITS work is indicated and no authorised repeat has been done, the operator must “Repeat those ultrasonic inspection tasks.” The authorised status of the person who performs the repeat inspections is a control mechanism, the AD requiring repetition “by an authorised person” without further defining authorisation criteria in the text. The defect‑reporting concept imposes an affirmative short‑notice reporting duty: “If, during re‑inspection of the aircraft or aeronautical product a defect is identified, submit a defect report to CASA noting this AD in the report,” and this must be done within two days after accomplishing the inspection. Timeframes are explicit: Requirement 1 within seven days of the AD’s effective date, Requirement 3 within thirty days, and Requirement 4 within two days of inspection completion. The Background statement is the administrative rationale: CASA identified use of non‑authorised personnel by DITS, inability to establish inspection quality, and a lack of suitable organizational records. The AD therefore uses record review plus conditional re‑inspection and expedited reporting as the chosen compliance mechanism to address an uncertainty about historical inspection quality and documentation.

The AD explicitly affects operators of any aircraft that had ultrasonic inspections performed by DITS during the nominated period, and it also covers “any aeronautical product fitted to the aircraft” that received such treatment. That means the primary economic actors who bear duties under the AD are aircraft owners, operators or their maintenance management delegates who hold or control the airworthiness records for the aircraft and fitted aeronautical products. Responsibility to perform Requirement 1, the records review, is placed on the operator or entity in possession of the aircraft records, as the AD instructs review of the aircraft records to determine whether DITS carried out and certified ultrasonic inspections in the nominated period. The AD also affects maintenance organisations and individuals qualified to perform ultrasonic non‑destructive inspection tasks, because repetition of inspections must be carried out by an “authorised person.” The text does not define who authorises those persons, but the compliance obligation imports an expectation that authorised personnel will be used for the follow‑up work. CASA is the regulator issuing the AD, and the AD identifies CASA’s delegate, Nicholas Ward, as the signatory; CASA is the recipient of defect reports if defects are found. The organisation DITS is the source of the initial inspections and is the factual subject of CASA’s concern in the Background; however, the AD does not impose direct obligations on DITS within the text, rather it imposes obligations on operators whose records show DITS performed work. Secondary affected parties include maintenance schedulers and commercial repair facilities which will be engaged to perform any required repeat inspections, and insurers or financiers may be indirectly affected if repeat inspections create operational downtime or affect airworthiness condition reports. The AD notes CASA’s understanding that “some operators have already repeated some Ultrasonic non‑destructive inspection tasks, using authorised personnel,” which implies those operators are outside the re‑inspection requirement where the authorised repeat is complete; the text treats already‑completed authorised repeats as satisfying the AD.

The AD prescribes three primary duties and one reporting obligation with precise deadlines. Duty 1 (Requirement 1) is a documentary duty: operators must review aircraft records “to determine whether any Ultrasonic Inspection has been carried out and certified by DITS on the aircraft or any aeronautical product fitted to the aircraft in the nominated period.” This documentary review must occur within seven days after the AD’s effective date, 2 August 2013. Duty 2 is conditional: if the records do not indicate DITS work during the nominated period, “no further action is required by this AD.” That creates a safe‑harbour conditional right for operators whose records show no DITS activity. Duty 3 is an affirmative remedial duty triggered only where DITS work is indicated and no repeat inspections have been carried out by an authorised person; in that case operators must “Repeat those ultrasonic inspection tasks,” and that repetition must be done within 30 days after the AD’s effective date. Duty 4 attaches when a defect is found during re‑inspection: operators must “submit a defect report to CASA noting this AD in the report” within two days after accomplishing the inspection. The AD does not specify remedial actions for identified defects beyond the reporting obligation. Rights are implicit rather than articulated: operators who can demonstrate that authorised repeat inspections have already been carried out are released from the need to repeat those tasks, per CASA’s expressed understanding; operators whose records show no DITS activity are exempted from further action. The AD does not specify appeals, review rights or procedural challenge mechanisms within its text, nor does it set out a process for CASA to authorise alternate compliance. The obligation to have repeat inspections performed by an “authorised person” is central; the AD imposes no definition of who authorises or what authorisation consists of, thus procedural interpretation of that term will follow the relevant authorisation framework outside the AD. The AD therefore creates a compliance pathway based on records evidence and the presence or absence of authorised repeat inspections, with short timeframes for documentary review, re‑inspection and defect reporting.

The text of the AD sets out mandatory compliance steps and firm timeframes, but it does not itself specify criminal, civil or administrative penalties for non‑compliance within the document. The directive requires operators to carry out a records review within seven days of the effective date, to repeat listed inspection tasks within thirty days where applicable, and to report defects to CASA within two days of inspection completion. The AD makes those obligations explicit and grants CASA the authority to require reporting of defects that arise from the prescribed re‑inspection. The AD is signed by a delegate of the Civil Aviation Safety Authority, which indicates issuance under the administrative authority of CASA; the AD does not include expressed sanctioning provisions, monetary penalties, suspension mechanisms or step‑by‑step enforcement procedures in its text. The Background explains CASA’s reason for the AD,non‑authorised personnel were used by DITS and CASA cannot verify the standard of those inspections,establishing the regulatory rationale for imposing the duties. The AD establishes a reporting chain to CASA for defects, however remedial enforcement measures that CASA might take in response to non‑compliance or reported defects are not articulated in the AD document itself. Practically, the AD creates an expectation of compliance and a requirement to notify CASA about defects noted during repeat inspections, but the AD does not set out enforcement mechanisms or penalties in the text provided.

The AD is presented as an administrative instrument issued by the Civil Aviation Safety Authority, and it prescribes inspections “by an authorised person.” The AD does not, within its text, restate the broader authorisation framework that determines who qualifies as an “authorised person,” nor does it cross‑reference specific statutory provisions, regulations, or certification standards. The obligations in the AD are procedural and operational: they require record review, possible repeat inspection and defect reporting. The AD sits functionally atop the existing regulatory system for maintenance and airworthiness in that it imposes an AD‑specific schedule and reporting duty, but the text does not specify interactions with particular certificates, licences, airworthiness directives beyond this one, maintenance release procedures, or continuing airworthiness obligations. The AD’s inclusion of “any aeronautical product fitted to the aircraft” aligns the scope with typical aviation maintenance practice which treats components and installed articles as part of the continuing airworthiness regime, but the AD itself does not provide cross‑references to parts or component rules. Because the AD requires repeat inspections to be performed by an “authorised person,” compliance will necessarily involve the applicable authorisation regime that governs maintenance personnel and non‑destructive inspection approvals, even though this AD does not define or cite that regime. The AD’s reporting duty requires submission of a defect report to CASA, thus invoking CASA’s defect reporting systems, but the AD does not specify the reporting form, format, or subsequent procedural steps. In short, the AD imposes targeted duties that presuppose and interact with pre‑existing authorisation, maintenance and defect‑reporting frameworks without reprinting or redefining those frameworks within the AD text.

The AD document supplied records a single issuance identified as AD/GENERAL/86, 16/2013, and indicates an effective date of 2 August 2013. The AD is signed by Nicholas Ward, Delegate of the Civil Aviation Safety Authority, on 31 July 2013. Within the provided text there is no subsequent amendment history, no addenda or errata, and no later effective or superseding directive recorded. The table header and repeated lines at the end of the document duplicate the AD’s identification information (AD/GENERAL/86, 16/2013, the Darwin Inspection and Testing Service Ultrasonic Inspection title) but do not indicate any amendment, variation or revocation. The Background and Requirement blocks refer only to the original issuance rationale and operative requirements. The AD does not include a “supersedes” or “revokes” statement within the text presented, and there is no amendment chronology or multiple issue dates in the supplied material. Therefore, on the basis of the document provided, the AD exists as a single issuance with the effective date and signature noted above, and no amendment entries are recorded in this source.

The supplied AD text contains no references to litigation, disputes, judicial or administrative appeals, or case law arising from this directive. It does not cite any precedent nor report any legal challenges to its issuance, nor does it reference prior directives that were contested. The Background sets out CASA’s factual findings that motivated the AD, specifically the use of non‑authorised personnel by DITS and the inability of the organisation to provide suitable records, but it does not indicate that those findings were subject to court or tribunal proceedings. The AD itself is administrative and prescriptive, and the document as provided contains no record of subsequent judicial review, enforcement litigation, or settlement related to this AD. If litigation or appeals occurred after the date of issuance, those are not recorded in the supplied text and therefore cannot be reported here.

Several operational and compliance traps are present in the AD as written. First, the AD’s applicability hinges on a historical window and a particular provider, DITS, meaning that operators must be precise in their records review: the AD applies only to ultrasonic inspections “carried out and certified by DITS” during 1 January 2010 through 8 February 2013. Failure to interpret the temporal boundaries correctly could lead to unnecessary re‑inspection or missed obligations. Second, the AD explicitly includes “any aeronautical product fitted to the aircraft,” extending the duty beyond the airframe to installed components, so records on subassemblies and components must be searched as well as aircraft logs. Third, the AD relies entirely on documentary evidence for triggering further work: if the operator’s records do not indicate DITS carried out work during the nominated period, “no further action is required.” Operators with incomplete or ambiguous records must make a compliance determination under a tight deadline: Requirement 1 must be completed within seven days after the effective date, which is a short window to conduct a thorough records sweep across aircraft, components and historical records. Fourth, the term “authorised person” is pivotal to whether re‑inspection is required, but the AD does not define the authorisation standard in its text, creating potential uncertainty as to who qualifies to perform the repeat inspections and how to prove authorised status. Fifth, the AD sets a 30‑day deadline for repeating inspections where required, a period that may strain maintenance scheduling, parts availability and authorised personnel availability; the AD does not provide for extensions or alternate compliance pathways in the text. Sixth, the reporting duty for defects requires submission of a defect report to CASA “noting this AD in the report” within two days of the inspection, which is a rapid reporting timeframe and requires familiarity with CASA’s defect reporting channels. Finally, the AD does not articulate consequences for non‑compliance or outline subsequent CASA actions, which may leave operators uncertain about enforcement risk and post‑reporting expectations. These points are not implicit judgments, they follow directly from the AD’s language and timelines.

The AD sets a short, structured compliance pathway. Step 1, within 7 days after the AD’s effective date (2 August 2013), perform a records review in accordance with Requirement 1: examine the aircraft logbooks, maintenance records and records for any aeronautical product fitted to the aircraft to establish whether any ultrasonic non‑destructive inspection was carried out and certified by DITS during 1 January 2010 through 8 February 2013. Record the results of this review and retain documentary evidence of the review having been completed within the seven‑day window. If the records do not indicate DITS performed such inspections during the nominated period, no further action is required under the AD. Step 2, if records do indicate DITS performed ultrasonic inspections during the nominated period and no repeat inspection has been carried out by an authorised person, arrange for the repeat of the ultrasonic inspection tasks. The AD requires that these repeat inspections be completed within 30 days after the AD’s effective date. The AD instructs that the repeat inspections be done by an “authorised person”; operators should therefore ensure the person or organisation they engage holds the necessary authorisations under the relevant maintenance and qualification framework that governs ultrasonic non‑destructive testing. Step 3, if during any re‑inspection a defect is identified, submit a defect report to CASA that specifically notes this AD, and do so within two days after accomplishing the inspection. Retain copies of the defect report submission and any maintenance action taken thereafter. Administrative steps to document compliance should include dated evidence of the records review, authorisation credentials for personnel performing repeat inspections, records of completed inspection tasks, and copies of any defect reports submitted to CASA. The AD notes that CASA understands some operators have already repeated some ultrasonic inspection tasks using authorised personnel; operators who can demonstrate an authorised repeat inspection already exists for the affected tasks should document that proof, as the AD treats completed authorised repeats as satisfying the repeat requirement. The AD does not provide a mechanism for seeking alternative compliance or extensions in its text, so operators should act promptly to meet the deadlines set out in the AD.