{"id":"F2006B02644","name":"AD/B727/122 - Forward and Aft Attendants Panel Ground Wire Installation","slug":"ad-b727-122-forward-and-aft-attendants-panel-ground-wire-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41960,"registerId":"commonwealth-F2006B02644-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B727/122 - Forward and Aft Attendants Panel Ground Wire Installation","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)  Boeing 727 Series Aeroplanes\n\n \n\n# AD/B727/122 Forward and Aft Attendant’s Panel\n\nGround Wire Installation Applicability: All Boeing 727 model aircraft except cargo and package freighters. Requirement:              Action in accordance with Boeing Service Bulletin 727-20-0002.\n\nCompliance: Prior to 6 September 1991.\n\n# 9/90\n\n \n\nBackground: Boeing have advised that the P13 and P14 panels on 727 and 737 series aircraft have no electrical grounding, and as a consequence the aluminium face plate and several metallic switches could become electrified. To prevent electrical shock to personnel, an electrical ground wire must be installed on the P13 and P14 panels.\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\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The Background states the issue affects P13 and P14 panels on both 727 and 737 series aircraft, but the AD’s Applicability covers only Boeing 727 model aircraft (excluding cargo and package freighters). That narrows the directive’s scope relative to the problem description and could require separate action for 737s. (Background; Applicability)"},"complexity_factors":["Narrow technical requirement limited to installing a ground wire on specified panels (low substantive complexity). (Requirement; Background)","Dependence on an external technical document (Boeing Service Bulletin 727-20-0002) for implementation details increases practical complexity for operators. (Requirement)","Fixed compliance deadline creates scheduling and downtime considerations for operators. (Compliance)","Applicability excludes cargo and package freighters and is limited to Boeing 727 series aircraft, which narrows scope but requires correct identification of affected airframes. (Applicability)","Background references both 727 and 737 series, while the AD applies only to 727 — this creates scope ambiguity that operators must resolve. (Background; Applicability)","The AD text does not specify enforcement, documentation, or who may perform the work, leaving procedural questions to normal regulator practice or separate guidance. (Requirement; Compliance)"],"plain_english_summary":"What this instrument does (mechanically): It requires that an electrical ground wire be installed on the P13 and P14 attendant panels (forward and aft) of Boeing 727 series aeroplanes (excluding cargo and package freighters). The installation must be carried out in accordance with Boeing Service Bulletin 727-20-0002, and the work had to be completed by 6 September 1991. (Applicability; Requirement; Compliance)\n\nWho it affects: Owners and operators of affected Boeing 727 passenger/combi aircraft are the parties who must arrange and pay for the installation and ensure it is completed by the compliance date. (Applicability; Requirement; Compliance)\n\nWhy it matters (the stated safety concern): Boeing advised that the P13 and P14 panels on 727 and 737 series aircraft had no electrical grounding; as a result the aluminium face plate and several metallic switches could become electrified. The stated purpose of the required action is to prevent electrical shock to personnel by adding an electrical ground wire to those panels. (Background)\n\nOperational and compliance consequences (mechanics, incentives and trade-offs):\n- Who pays and who decides: The obligation to act falls on operators/owners of the affected 727 aircraft; they must decide when and how to schedule the installation and meet the compliance deadline. The AD directs compliance by following the manufacturer’s service bulletin, which channels the technical method to Boeing’s prescribed steps. (Applicability; Requirement)\n- Compliance burden and timing: The directive creates a one-off technical modification that must be completed by the specified date. That imposes direct costs for parts and labour, and likely aircraft downtime while the work is performed. The AD does not itself set prices, certification of who may perform the work, or payment arrangements. (Requirement; Compliance)\n- Implementation risk and dependence on external instructions: The AD requires action “in accordance with Boeing Service Bulletin 727-20-0002,” so the technical details and methods of installation are determined by that external document. Any ambiguity, availability issues, or interpretation questions about the service bulletin would affect how easily operators can comply. (Requirement)\n- Effects on private enterprise and markets: The measure imposes a compliance cost on operators of the affected fleet. It does not alter ownership, market entry rules, or operating licences in the text provided. Any competitive or price effects would come indirectly through maintenance costs and aircraft downtime; the AD itself prescribes a technical fix rather than market regulation. (Applicability; Requirement; Compliance)\n- Enforcement and record-keeping: The AD states the required action and deadline but does not specify enforcement procedures, documentation standards, or inspection steps within the text shown. Operators would need to rely on usual regulator procedures for demonstrating compliance. (Requirement; Compliance)\n\nNotes on scope and potential ambiguity: The background describes the issue as affecting P13/P14 panels on both 727 and 737 series aircraft, but the directive’s Applicability covers only Boeing 727 model aircraft (excluding cargo and package freighters). That difference between the problem description and the stated applicability could create uncertainty about whether 737s are covered by this particular AD or require a separate directive. (Background; Applicability)\n\nNet effect summary: The AD imposes a narrowly targeted, manufacturer-specified electrical-modification requirement on a defined subset of Boeing 727 aircraft to address a specified shock hazard. The cost and logistical burden fall on aircraft owners/operators, who must follow the Boeing service bulletin to complete the installation by the compliance date. (Applicability; Requirement; Compliance; Background)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific electrical hazard in a specific aircraft type. It has not expanded beyond its original purpose of mandating a grounding wire installation."},"complexity_factors":["Very short document (under 200 words of substantive content)","Only 2 defined applicability criteria (aircraft model and exclusion of freighters)","Single, unambiguous compliance action with reference to external technical standard","No nested conditions, exceptions, or cross-references to other legislation","Clear deadline (specific date)","Background explanation provided in plain language"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) requiring specific repairs or modifications to aircraft.\n\n**What it does:**\nOrders owners and operators of Boeing 727 passenger aircraft to install an electrical ground wire on two specific panels inside the cabin — the P13 (forward attendant's panel) and P14 (aft attendant's panel).\n\n**Why it matters:**\nWithout this grounding wire, the aluminium face plates and metal switches on these panels could become electrically charged. This creates a risk of **electric shock to flight attendants** or passengers who touch the panels. The directive fixes a design flaw identified by Boeing.\n\n**Who must comply:**\n- All Boeing 727 model aircraft **except** cargo and package freighters (passenger and combi aircraft only)\n- Compliance was required before 6 September 1991\n\n**What action is required:**\nFollow the technical instructions in **Boeing Service Bulletin 727-20-0002** — a manufacturer-issued repair manual that specifies exactly how to install the ground wire."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-122-forward-and-aft-attendants-panel-ground-wire-installation","history":"/api/acts/ad-b727-122-forward-and-aft-attendants-panel-ground-wire-installation/history","analysis":"/api/acts/ad-b727-122-forward-and-aft-attendants-panel-ground-wire-installation/analysis","conflicts":"/api/acts/ad-b727-122-forward-and-aft-attendants-panel-ground-wire-installation/conflicts","importantCases":"/api/acts/ad-b727-122-forward-and-aft-attendants-panel-ground-wire-installation/important-cases","documents":"/api/acts/ad-b727-122-forward-and-aft-attendants-panel-ground-wire-installation/documents"}}