{"id":"F2009L03103","name":"AD/GBK 117/5 Amdt 1 - Electrical Bonding and Static Dischargers","slug":"ad-gbk-117-5-amdt-1-electrical-bonding-and-static-dischargers","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80780,"registerId":"commonwealth-F2009L03103-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter BK 117 Series Helicopters","sectionType":"division","heading":"Eurocopter BK 117 Series Helicopters","content":"### Eurocopter BK 117 Series Helicopters\n\n| AD/GBK 117/5 Amdt 1 | Electrical Bonding and Static Dischargers | 9/2009 |\n| ------------------- | ----------------------------------------- | ------ |\n\n| Applicability: | All MBB BK 117 helicopters with serial numbers from 7001 up to and including 7241.                                                                                                                                                        |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Install electrostatic dischargers and modify fuel vent outlet ports in accordance with Alert Service Bulletin ASB-MBB-BK 117-90-105.                                                                                                   |\n|                | 2. For serial numbers up to 7215 remove, without replacing, the fuel return lines; and inspect fuel supply tank vent outlet ports; in accordance with Alert Service Bulletin ASB-MBB-BK 117-60-107 and SB-MBB-BK 117-60-108 respectively. |\n|                | Note 1: LBA AD 90-212/2 refers.Note 2: FAA AD 91-06-11 (b), (c) and (d) refer.                                                                                                                                                            |\n| Compliance:    | If not already accomplished, within 50 hours time in service after the effective date of this amendment.                                                                                                                                  |\n|                | This Amendment becomes effective on 27 August 2009.                                                                                                                                                                                       |\n| Background:    | The original issue of this AD was issued in 1994. It applied to Kawasaki BK 117 by serial number, and referred to Kawasaki KSB-117-077 and JCAB AD 3432-91.                                                                               |\n|                | Amendment 1 is raised to nominate MBB helicopters, the MBB Service Bulletin, and the LBA and FAA Airworthiness Directives. Amendment 1 also adds Requirement No. 2.                                                                       |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n15 July 2009","sortOrder":0},{"sectionNumber":"AD/GBK 117/5 Amdt 1","sectionType":"part","heading":"AD/GBK 117/5 Amdt 1","content":"## AD/GBK 117/5 Amdt 1","sortOrder":1},{"sectionNumber":"Electrical Bonding and Static Discharger","sectionType":"part","heading":"Electrical Bonding and Static Dischargers","content":"## Electrical Bonding and Static Dischargers","sortOrder":2},{"sectionNumber":"9/2009","sectionType":"part","heading":"9/2009","content":"## 9/2009","sortOrder":3}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The original 1994 AD applied only to Kawasaki-manufactured BK 117 helicopters. Amendment 1 significantly expands scope to cover MBB (German)-manufactured helicopters with serial numbers 7001-7241, and adds Requirement No. 2 (fuel return line removal and inspection) which did not exist in the original. The amendment also replaces Japanese regulatory references (JCAB) with German (LBA) and US (FAA) references."},"complexity_factors":["Very short document (under 300 words)","Only 2 substantive requirements with clear serial number cutoffs","Minimal defined terms (only 'time in service' implied)","No nested conditional logic or cross-references within the instrument itself","External references to Service Bulletins and foreign ADs are explicit but not incorporated by full text","Simple binary applicability test (serial number range)"],"plain_english_summary":"This AD requires owners/operators of MBB (German) Eurocopter BK 117 helicopters serials 7001–7241 to install electrostatic dischargers and modify fuel vent outlet ports to reduce static-discharge risk near fuel systems. For older ships (up to SN 7215) it also mandates fuel return-line removal and fuel‑tank vent inspection. Compliance is within 50 flight hours after 27 Aug 2009. It expands the original 1994 Kawasaki-only coverage to include MBB helicopters and adds a second maintenance requirement for older aircraft."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"Yes. Amendment 1 updates the original 1994 AD by substituting MBB-designated helicopters and MBB service bulletins for the earlier Kawasaki references and adds a new Requirement No. 2 (removal of fuel return lines and inspection for serials up to 7215). The Background states: \"Amendment 1 is raised to nominate MBB helicopters, the MBB Service Bulletin... Amendment 1 also adds Requirement No. 2.\""},"complexity_factors":["Technical retrofit work: installation of electrostatic dischargers and modification of fuel vent outlet ports requires maintenance capability and access to technical drawings and parts (Requirement: \"Install electrostatic dischargers and modify fuel vent outlet ports\"; Alert Service Bulletin ASB-MBB-BK 117-90-105).","Multiple, cross-referenced documents: compliance depends on following several service bulletins and other ADs (ASB-MBB-BK 117-90-105; ASB-MBB-BK 117-60-107; SB-MBB-BK 117-60-108; LBA AD 90-212/2; FAA AD 91-06-11).","Serial-number applicability: only affects helicopters with specific serial numbers 7001–7241, and an additional action applies only to serials up to 7215, creating tiered obligations (Applicability; Requirement No.2).","Short compliance window: work must be done within 50 hours time in service after the amendment’s effective date, pressuring scheduling and parts procurement (Compliance: \"within 50 hours time in service\").","Recordkeeping and airworthiness follow-up: operators must document compliance and reconcile this amendment with prior ADs and maintenance logs (Background: references to original 1994 AD and prior Kawasaki/Japan ADs).","Potential supply and installation costs: need for parts (dischargers), labour and possible downtime for affected operators (implicit in Requirement and Compliance).","Regulatory interplay risk: amendment replaces or updates earlier Kawasaki-directed requirements and introduces new obligations, requiring review of earlier compliance to avoid duplication or conflict (Background: \"Amendment 1 is raised to nominate MBB helicopters... and also adds Requirement No. 2\")."],"plain_english_summary":"Requires installation of electrostatic dischargers and modification of fuel vent outlet ports per the manufacturer’s Alert Service Bulletin; for helicopters with serial numbers up to 7215 it also requires removal of fuel return lines and inspection of fuel tank vent outlet ports. It applies to MBB/Kawasaki BK 117 helicopters serial numbers 7001–7241 and must be completed within 50 hours time in service after the amendment’s effective date."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gbk-117-5-amdt-1-electrical-bonding-and-static-dischargers","history":"/api/acts/ad-gbk-117-5-amdt-1-electrical-bonding-and-static-dischargers/history","analysis":"/api/acts/ad-gbk-117-5-amdt-1-electrical-bonding-and-static-dischargers/analysis","conflicts":"/api/acts/ad-gbk-117-5-amdt-1-electrical-bonding-and-static-dischargers/conflicts","importantCases":"/api/acts/ad-gbk-117-5-amdt-1-electrical-bonding-and-static-dischargers/important-cases","documents":"/api/acts/ad-gbk-117-5-amdt-1-electrical-bonding-and-static-dischargers/documents"}}