{"id":"F2006B03177","name":"AD/B747/282 - Engine Fire Extinguisher - Modification","slug":"ad-b747-282-engine-fire-extinguisher-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42549,"registerId":"commonwealth-F2006B03177-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 747 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/B747/282 Engine Fire Extinguisher - M","sectionType":"part","heading":"AD/B747/282 Engine Fire Extinguisher - Modification 13/2002","content":"# AD/B747/282 Engine Fire Extinguisher \\- Modification 13/2002\n\nApplicability: Boeing Model 747 Series aeroplanes as specified in FAA AD 2002-19-12. Requirement: Action per the requirements of FAA AD 2002-19-12.\n\nNote 1: FAA AD 2002-19-12, Amdt 39-12892 refers.\n\nNote 2: This AD supersedes AD/B747/227.\n\nCompliance: As detailed in the requirement document with a revised effective date of 26 December 2002.\n\nThis Airworthiness Directive becomes effective on 26 December 2002.\n\nBackground: Fire extinguisher discharge pipes are found to crack on Model B747 series aeroplanes fitted with GE CF6-80C2 and PW4000 Series engines. This AD mandates a terminating action for the repetitive inspections introduced per AD/B747/227 which is based on FAA AD 2000-07-10.\n\n![Signature of James Coyne, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 19 November 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 4 December 2002.","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"This AD replaces the earlier AD/B747/227 and changes the compliance regime from recurring inspections to a mandated terminating modification for affected B747s (those addressed by FAA AD 2002-19-12). The practical scope shifts from ongoing inspection burden to a one‑time modification obligation for operators of aircraft with the specified engines."},"complexity_factors":["Direct cross-reference to external FAA AD (FAA AD 2002-19-12) creates dependency on non‑Australian instrument","Supersession of prior AD (AD/B747/227) changes regulatory history and compliance baseline","Technical specificity limited to aircraft with GE CF6-80C2 and PW4000 engines","Shift from repetitive inspections to a terminating modification alters compliance obligations and timing","Regulatory delegation invoked under CAR 1998 subregulation 39.1(1) (delegate issues mandatory AD)","Compliance requires following FAA-prescribed instructions and potentially FAA service documentation","Clear effective date (26 December 2002) creates a fixed implementation deadline for operators"],"plain_english_summary":"This Airworthiness Directive requires Boeing 747 series aeroplanes listed in FAA AD 2002-19-12 to have the engine fire‑extinguisher discharge pipes modified according to that FAA AD. It supersedes AD/B747/227 and becomes effective 26 December 2002.\n\nIt targets operators of B747s fitted with GE CF6-80C2 or PW4000 engines after cracking was found (Background). The CASA delegate mandates the terminating modification; aircraft owners/operators must pay for, schedule and carry out the modification per the FAA instructions instead of continuing the repetitive inspections."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific mechanical defect in fire extinguisher discharge pipes on specific Boeing 747 engine configurations. It replaces an earlier temporary inspection regime with a permanent modification, but this is a natural progression of the same safety issue rather than scope creep."},"complexity_factors":["Very short document (under 300 words)","Only 2 defined applicability criteria (aircraft model and engine type)","Single requirement: comply with external FAA directive","No nested conditions or exceptions","No internal cross-references beyond superseded directive","Straightforward compliance timeline (single effective date)"],"plain_english_summary":"This CASA Airworthiness Directive mandates a permanent modification to the engine fire‑extinguisher discharge piping on Boeing 747s fitted with GE CF6‑80C2 or Pratt & Whitney PW4000 engines, adopting FAA AD 2002‑19‑12. It replaces repetitive inspections with a fix to stop pipe cracking that could prevent fire suppressant reaching an engine.\n\nIt affects operators of those 747s and took effect 26 December 2002 to ensure engine fires can be reliably extinguished."},"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-b747-282-engine-fire-extinguisher-modification","history":"/api/acts/ad-b747-282-engine-fire-extinguisher-modification/history","analysis":"/api/acts/ad-b747-282-engine-fire-extinguisher-modification/analysis","conflicts":"/api/acts/ad-b747-282-engine-fire-extinguisher-modification/conflicts","importantCases":"/api/acts/ad-b747-282-engine-fire-extinguisher-modification/important-cases","documents":"/api/acts/ad-b747-282-engine-fire-extinguisher-modification/documents"}}