{"id":"F2008L00392","name":"AD/JBK 117/27 - Fire Extinguisher Hose Clamps","slug":"ad-jbk-117-27-fire-extinguisher-hose-clamps","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119035,"registerId":"commonwealth-F2008L00392-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Kawasaki BK 117 Series Helicopters","sectionType":"division","heading":"Kawasaki BK 117 Series Helicopters","content":"### Kawasaki BK 117 Series Helicopters\n\n| AD/JBK 117/27 | Fire Extinguisher Hose Clamps | 3/2008 |\n| ------------- | ----------------------------- | ------ |\n\n| Applicability: | Kawasaki Model BK117C-1 and C-2 helicopters, serial number 4001 through 4003, and 4005 through 4010.                                                                                                                                                                                                                                                                                                                                                                                                        |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Loosen and re-torque the existing clamps on the extinguishing agent injection tube connections, in accordance with Kawasaki Service Bulletin No.KSB-117-283 or later JCAB approved revision.These actions are not required for Kawasaki Model BK117C-2 helicopter, serial number 4010.2. Modify the extinguishing agent injection tube connections in accordance with Kawasaki Service BulletinNo.KSB-117-283 or later JCAB approved revision.Note: JCAB AD No. TCD-7111-2007 dated 22 June 2007 refers. |\n| Compliance:    | 1. Within 30 days after the effective date of this AD, unless previously accomplished.2. Within 100 flight hours after the effective date of this AD, unless previously accomplished.                                                                                                                                                                                                                                                                                                                       |\n|                | This Airworthiness Directive becomes effective on 13 March 2008.                                                                                                                                                                                                                                                                                                                                                                                                                                            |\n| Background:    | An investigation following an inadvertent operation of the fire extinguishing system discovered that one of two injection tubes became disconnected. This condition, if not corrected, could affect the ability of the fire extinguishing system to perform its intended function.                                                                                                                                                                                                                          |\n\n![](image.001.png)  \nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n21 January 2008","sortOrder":0},{"sectionNumber":"AD/JBK 117/27","sectionType":"part","heading":"AD/JBK 117/27","content":"## AD/JBK 117/27","sortOrder":1},{"sectionNumber":"Fire Extinguisher Hose Clamps","sectionType":"part","heading":"Fire Extinguisher Hose Clamps","content":"## Fire Extinguisher Hose Clamps","sortOrder":2},{"sectionNumber":"3/2008","sectionType":"part","heading":"3/2008","content":"## 3/2008","sortOrder":3}],"analysis":{"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 specific helicopter serial numbers. There is no evidence of scope creep; it targets exactly the safety issue identified in the background (disconnected fire extinguisher tube) with precisely tailored applicability and requirements."},"complexity_factors":["Very short document (approximately 250 words)","Only 2 defined applicability criteria (helicopter models and serial numbers)","Simple two-step compliance requirement with clear timeframes","Single cross-reference to a Japanese service bulletin (KSB-117-283)","One explicit exemption (serial number 4010 from first requirement)","No nested conditional logic or exceptions to exceptions","Plain language background explanation included"],"plain_english_summary":"This AD requires owners/operators and maintenance organisations of certain Kawasaki BK117C‑1 and C‑2 helicopters (serials 4001–4003, 4005–4010) to secure and modify fire‑extinguisher hose connections after an investigation found a tube had disconnected during accidental activation. It restores reliable fire suppression to protect crew and passengers.\n\nCompliance includes prompt re‑torqueing and a follow‑on connection modification with short, specified deadlines."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument itself specifies a focused corrective action for identified serial numbers and does not indicate any expansion or narrowing of scope from an earlier or different intent. The text provides applicability, required actions, and compliance times without showing amendments to prior scope within this document."},"complexity_factors":["Narrow applicability limited to specific helicopter models and serial numbers (simple targeting).","Technical compliance requires following Kawasaki Service Bulletin No.KSB-117-283 or later JCAB-approved revision (dependency on external technical doc).","Two compliance windows (30 days and 100 flight hours) create modest scheduling complexity for operators.","One explicit exemption for serial 4010.2 increases conditional logic for maintenance tracking.","Reference to a prior JCAB AD (TCD-7111-2007) introduces cross-document traceability requirements."],"plain_english_summary":"This Airworthiness Directive orders owners/operators of Kawasaki BK117C-1 and C-2 helicopters (serials 4001–4003, 4005–4010) to re-torque existing fire-extinguisher injection-tube clamps and to modify those tube connections per Kawasaki Service Bulletin KSB-117-283 (or later JCAB-approved revision). One serial (C-2, 4010.2) is exempt from the re-torque step. Actions must be done within 30 days or within 100 flight hours as specified. The rule addresses a discovered disconnected injection tube that could prevent the extinguisher system working when needed."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-jbk-117-27-fire-extinguisher-hose-clamps","history":"/api/acts/ad-jbk-117-27-fire-extinguisher-hose-clamps/history","analysis":"/api/acts/ad-jbk-117-27-fire-extinguisher-hose-clamps/analysis","conflicts":"/api/acts/ad-jbk-117-27-fire-extinguisher-hose-clamps/conflicts","importantCases":"/api/acts/ad-jbk-117-27-fire-extinguisher-hose-clamps/important-cases","documents":"/api/acts/ad-jbk-117-27-fire-extinguisher-hose-clamps/documents"}}