{"id":"F2006B09481","name":"AD/EMB-110/41 - Engine Electrical Connectors","slug":"ad-emb-110-41-engine-electrical-connectors","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53991,"registerId":"commonwealth-F2006B09481-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/EMB-110/41 - Engine Electrical Connectors","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Embraer EMB-110 (Bandeirante) Series Aeroplanes\n\n \n\nAD/EMB-110/41 Engine Electrical Connectors 2/89\n\nApplicability: All model EMB-110 with S/Nos 110001 through 110444 which comply with SB 110-071-0009/1; and S/Nos 110445 through 110478.\n\n \n\nRequirement: Action in accordance with Embraer SB 110-071-0023.\n\n \n\nNote: Brazilian AD 88-11-01 refers.\n\n \n\nCompliance: Prior to 9 August 1989.\n\n \n\nBackground:  Some electrical connectors installed to the engine “C” flange have rear insulators which are out of specification; thus potentially affecting the reliability of various engine systems.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific manufacturing defect in a specific aircraft type. It has not expanded beyond its original purpose of mandating a particular engine connector repair."},"complexity_factors":["Very short document (under 200 words)","Only 2 defined applicability criteria (serial number ranges)","Single requirement referencing an external technical document (Embraer SB)","No nested exceptions or conditional logic","One simple compliance deadline with no alternatives","No cross-references to other legislation beyond a note about a Brazilian AD"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nOrders owners and operators of certain **Embraer EMB-110 Bandeirante aircraft** to inspect and fix electrical connectors on the engine. The problem is that some connectors have faulty rear insulators (the protective parts that keep wires properly separated), which could cause engine systems to fail unexpectedly.\n\n**Who it affects:**\n- Owners and operators of Embraer EMB-110 aircraft with serial numbers 110001 through 110444 (that have already been modified per Service Bulletin 110-071-0009/1), AND serial numbers 110445 through 110478.\n\n**What must be done:**\n- Follow the instructions in **Embraer Service Bulletin 110-071-0023** — a technical repair notice from the manufacturer.\n- Complete this work **before 9 August 1989**.\n\n**Why it matters:**\nFaulty electrical connectors on an engine can cause critical systems to malfunction — potentially leading to engine failure or loss of control. This directive prevents that by forcing a specific repair before a hard deadline.\n\n**Key point:** This is not optional. Airworthiness Directives are legally binding safety requirements. Ignoring them means the aircraft cannot legally fly."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The document sets a targeted, time-limited requirement for a defined set of EMB-110 serial numbers and references a specific Embraer service bulletin for corrective action (Applicability, Requirement, Compliance). There is no indication within the text that the AD’s applicability or required actions have been amended or expanded from an earlier or ‘original’ intent; the AD consistently confines scope to the listed serial numbers and to compliance with the named SB."},"complexity_factors":["Narrow applicability defined by specific serial-number ranges (Applicability)","Single mandatory cross-reference to an external technical document (Embraer SB 110-071-0023) rather than detailing procedures in the AD (Requirement)","Fixed, near-term compliance deadline (prior to 9 August 1989) which creates scheduling pressure (Compliance)","Technical subject-matter (engine electrical connectors and insulators) requiring specialized maintenance skills and parts (Background, Requirement)","Lack of quantified cost, duration, or enforcement details in the AD itself, increasing reliance on external SB and operator judgement (Entire document)"],"plain_english_summary":"What this instrument requires, mechanically\n\n- It requires operators of certain Embraer EMB-110 (Bandeirante) aeroplanes to carry out the work described in Embraer Service Bulletin (SB) 110-071-0023. (Requirement)\n- The directive applies only to EMB-110 aeroplanes with serial numbers 110001–110444 that already comply with SB 110-071-0009/1, and to serial numbers 110445–110478. (Applicability)\n- The work must be completed by 9 August 1989. (Compliance)\n\nWhy the work is required (the stated problem)\n\n- The Background statement says some electrical connectors on the engine “C” flange have rear insulators that are out of specification, which could affect the reliability of various engine systems. (Background)\n- The AD also points to a Brazilian airworthiness directive for related context. (Note)\n\nWho pays and who decides\n\n- The aircraft owners or operators of the affected serial-numbered EMB-110s are the parties required to act, because the AD sets a compliance obligation for those aircraft. (Applicability, Requirement, Compliance)\n- The technical method is prescribed by Embraer’s service bulletin (SB 110-071-0023). The regulator’s directive makes following that SB mandatory for the listed aircraft. (Requirement)\n\nCompliance burden and timing\n\n- The AD creates a mandatory deadline (prior to 9 August 1989). Operators must schedule and perform the SB work before that date, which may require maintenance time, access to parts, and technician labour. (Compliance, Requirement)\n- The AD text does not state how long the work takes, what parts (if any) are needed, or the cost of the intervention; those details are in the referenced Embraer SB. (Requirement)\n\nImplementation risk and discretion\n\n- The directive leaves the technical specifics, acceptance criteria and procedural steps to Embraer’s SB rather than setting them in the AD. This concentrates technical decision-making in the manufacturer’s document while making compliance with that document mandatory. (Requirement)\n- The AD does not itself state enforcement consequences, cost recovery mechanisms, or exemptions. (Entire document)\n\nTrade-offs and incentives (source-grounded)\n\n- The AD imposes a short, mandatory corrective action on a defined set of aircraft. That creates a direct compliance cost for the affected operators (labour, parts, scheduling). (Applicability, Requirement, Compliance)\n- Because the SB contains the technical solution, operators must obtain and follow the manufacturer’s procedures to conform to the AD; the AD therefore shifts procedural choice to the SB while leaving operational cost to the operator. (Requirement)\n\nWhat is left unspecified in the AD (practical effects)\n\n- The AD does not quantify costs, aircraft downtime, or required resources; operators must consult the Embraer SB for detailed procedures and estimate time/cost impacts themselves. (Requirement)\n- The AD does not explicitly state enforcement or approval pathways beyond the instruction to comply with the SB; consequences for non-compliance are not described in the text provided. (Entire document)\n\nConcise summary\n\n- In short: certain EMB-110 aeroplanes (by serial number) must undergo the corrective work set out in Embraer SB 110-071-0023 by 9 August 1989 because of out-of-spec rear insulators on engine-C flange electrical connectors that could affect engine-system reliability. The action is mandatory for the listed aircraft; the SB contains the technical steps and the operators bear the time, parts and labour costs associated with compliance. (Applicability, Requirement, Compliance, Background, Note)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-emb-110-41-engine-electrical-connectors","history":"/api/acts/ad-emb-110-41-engine-electrical-connectors/history","analysis":"/api/acts/ad-emb-110-41-engine-electrical-connectors/analysis","conflicts":"/api/acts/ad-emb-110-41-engine-electrical-connectors/conflicts","importantCases":"/api/acts/ad-emb-110-41-engine-electrical-connectors/important-cases","documents":"/api/acts/ad-emb-110-41-engine-electrical-connectors/documents"}}