{"id":"F2006B03352","name":"AD/B767/177 - Potable Water and Drain Lines - Inspection","slug":"ad-b767-177-potable-water-and-drain-lines-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42795,"registerId":"commonwealth-F2006B03352-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nBoeing 767 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/B767/177 Potable Water and Drain Line","sectionType":"part","heading":"AD/B767/177 Potable Water and Drain Lines - Inspection 9/2002","content":"# AD/B767/177 Potable Water and Drain Lines \\- Inspection 9/2002\n\nApplicability: Model 767 Series aeroplanes as identified in the requirement document. Requirement: Perform a one-time general visual inspection per the requirements of FAA AD 2002-\n\n11-11.\n\nNote: FAA AD 2002-11-11, Amdt 39-12772 refers.\n\nCompliance: Within 18 months of manufacture of the aircraft, or by 5 December 2002, whichever occurs later.\n\nThis Airworthiness Directive becomes effective on 5 September 2002.\n\nBackground: Accumulation of debris and contaminants on the heater tapes on the potable water and drain lines are a fire hazard. This Directive mandates inspection and corrective action.\n\n![Signature of Eugene Paul Holzapfel, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 26 July 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 14 August 2002.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD remains tightly focused on its original purpose: addressing a specific fire hazard on Boeing 767 aircraft. It has not expanded beyond the original safety concern regarding heater tape contamination on potable water and drain lines."},"complexity_factors":["Very short document (under 300 words)","Only 1 substantive requirement (visual inspection)","Single cross-reference to external FAA directive (AD 2002-11-11)","Simple compliance deadline (18 months from manufacture OR fixed date, whichever is later)","No defined terms section","No nested conditions or exceptions","Clear, single applicability (Model 767 Series)"],"plain_english_summary":"This CASA Airworthiness Directive requires operators of Boeing 767s in Australia to perform a one‑time visual inspection of potable water and drain line heater tapes (per FAA AD 2002‑11‑11) because debris buildup on the heater tapes can create a fire hazard. The inspection must be done within 18 months of manufacture or by 5 December 2002, whichever is later."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD stays within the original safety-focused purpose: detect and remediate debris/contaminant accumulation on heater tapes for potable water and drain lines to mitigate a fire hazard. It does not extend beyond that technical safety objective, add unrelated obligations, or broaden applicability beyond the specified Boeing 767 series aircraft. Its mechanics simply adopt the FAA AD's inspection and corrective-action instructions rather than reproducing them."},"complexity_factors":["Short, single-part requirement (one-time general visual inspection).","One cross-reference to an external document (FAA AD 2002-11-11) for procedural details.","Simple applicability statement (Boeing 767 series aeroplanes as identified in the requirement document).","Conditional compliance timing (within 18 months of manufacture or by a fixed calendar date, whichever is later).","Limited number of sections and minimal nested exceptions or definitions."],"plain_english_summary":"**What this instrument does (mechanical change)\n\n- Requires a one-time general visual inspection of potable water and drain line heater tapes on Boeing 767 series aircraft identified in the requirement document. (Requirement section.)\n- Directs operators to carry out any corrective action that the referenced FAA Airworthiness Directive (FAA AD 2002-11-11) prescribes. (Requirement section.)\n- Sets the compliance deadline as within 18 months of manufacture of the aircraft, or by 5 December 2002, whichever is later. (Compliance section.)\n- States the AD became effective on 5 September 2002. (Effectivity statement.)\n\nWhy the rule exists (official rationale)\n\n- The Background section says debris and contaminants accumulating on the heater tapes for potable water and drain lines create a fire hazard. The AD therefore mandates inspection and corrective action to address that unsafe condition.\n\nWho this affects and who decides\n\n- Aircraft owners and operators of Boeing 767 series aeroplanes identified in the requirement document must comply. (Applicability section.)\n- Maintenance organisations or mechanics who perform inspections/repairs will carry out the work under instruction from the operator and the FAA AD.\n- The Civil Aviation Safety Authority (CASA) delegate issued the directive under delegated regulation-making power (subregulation 39.1(1) of CAR 1998). The AD replicates or adopts the FAA AD's inspection and corrective-action instructions. (Opening paragraph and signature block.)\n\nWho pays and what behaviour changes\n\n- The aircraft owner/operator bears the direct costs: labour to perform the inspection, any parts and labour for corrective action, and aircraft downtime while work is done. (Requirement and Compliance sections imply these duties.)\n- Operators must add a one-time inspection task to their maintenance programme and act on any defects found according to FAA AD 2002-11-11.\n\nPractical implications, trade-offs and implementation risks\n\n- Reliance on cross-reference: The AD instructs compliance with FAA AD 2002-11-11 but does not reproduce its procedural detail. Operators must obtain and follow the FAA AD to know exactly how to inspect and what corrective steps are required. (Requirement note.) This creates a small administrative burden and a dependency on a non‑Australian document for procedural detail.\n- Cost and downtime: If contamination is found, corrective action may include cleaning or replacement of heater tape or associated plumbing, which increases maintenance costs and aircraft ground time. These are concentrated costs on affected operators; the safety benefit is diffuse across passengers and third parties. (Background and Requirement sections.)\n- Compliance timing: The dual deadline (within 18 months of manufacture or by 5 Dec 2002, whichever is later) requires operators of newer aircraft to meet the 18‑month window and older aircraft to meet the calendar date. This can create staggered workload for fleets depending on manufacture dates. (Compliance section.)\n- Implementation risk and clarity: The AD is short and prescriptive in outcome but light on procedural detail (the FAA AD contains those details). That raises the operational risk that different maintenance providers interpret inspection standards differently unless the FAA AD is strictly followed.\n- Effects on private businesses and competition: Independent maintenance organisations can perform the inspection and corrective work provided they meet the FAA AD instructions; the AD does not require a single supplier or create ownership restrictions. The measure imposes a short-term compliance cost that may be passed on through maintenance fees or increased operating costs.\n- Enforcement and discretion: The CASA delegate issued the AD under delegated authority, leaving CASA and civil aviation inspectors responsible for monitoring compliance under existing surveillance/enforcement arrangements. (Issuing paragraph and signature.)\n\nSummary sentence\n\n- In short: the AD mandates a one-time visual inspection (and any corrective action) of potable water and drain line heater tapes on specified Boeing 767 aeroplanes within a defined period, relying on FAA AD 2002-11-11 for procedural detail, to remove debris-related fire risk.\n"},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-177-potable-water-and-drain-lines-inspection","history":"/api/acts/ad-b767-177-potable-water-and-drain-lines-inspection/history","analysis":"/api/acts/ad-b767-177-potable-water-and-drain-lines-inspection/analysis","conflicts":"/api/acts/ad-b767-177-potable-water-and-drain-lines-inspection/conflicts","importantCases":"/api/acts/ad-b767-177-potable-water-and-drain-lines-inspection/important-cases","documents":"/api/acts/ad-b767-177-potable-water-and-drain-lines-inspection/documents"}}