{"id":"F2006B10405","name":"AD/HS 125/126 Amdt 1 - Electrical Power/Generator Power","slug":"ad-hs-125-126-amdt-1-electrical-power-generator-power","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116073,"registerId":"commonwealth-F2006B10405-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HS 125/126 Amdt 1 - Electrical Power/Generator Power","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBritish Aerospace BAe 125 Series Aeroplanes\n\nAD/HS 125/126\n\nAmdt 1\n\n  \nElectrical Power/Generator Power 12/93\n\nApplicability: British Aerospace 125 Series Aircraft as follows:\n\n| Series F400 | Post Mod                         | 252556 |\n| ----------- | -------------------------------- | ------ |\n| Series F600 | Post Mod                         | 252475 |\n| Series 700  | Pre Mod                          | 252636 |\n|             | Post Mod                         | 252789 |\n|             | Pre Mod 252789 & Post Mod 252636 |        |\n| Series 800  | Pre Mod                          | 253149 |\n|             | Post Mod                         | 253149 |\n\nRequirement: Modify the aircraft in accordance with Corporate Jets Limited 125 Series Aircraft Mandatory Service Bulletin No SB-24-289-3267A, B, C, D, E, F & G Revision 1 dated 10 April 1992.\n\nNote: This Service Bulletin has been classified as mandatory by the CAA(UK).\n\nCompliance: The compliance for the original issue of this Directive was prior to 30 June 1992.\n\nThe compliance for this amendment is prior to 30 April 1994.\n\nBackground: This modification reduces the possibility of earth wire damage bringing about an uncontrolled overvoltage, with a resulting battery overheat and/or failure of sensitive equipment. This amendment is issued following the publication of Revision 1 to the Service Bulletin which provides alternate earth locations and relay positions for some Series 400, 600 and 700 aircraft with different configurations.","sortOrder":0}],"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":4,"scope_assessment":{"changed":false,"description":"This amendment stays within the original safety purpose — preventing electrical overvoltage in BAe 125 aircraft. The scope has not expanded beyond the original electrical system modification. The amendment merely provides technical alternatives (different earth locations and relay positions) for aircraft configurations where the original service bulletin was impractical, plus extends the compliance deadline."},"complexity_factors":["Multiple aircraft series and sub-configurations (F400, F600, 700, 800) with different modification states (Pre Mod/Post Mod)","Seven separate service bulletin letters (A through G) referenced as a group","Cross-reference to UK CAA classification (external regulatory dependency)","Nested applicability matrix requiring aircraft records lookup to determine compliance path","Amendment structure creating layered compliance dates (original vs. amended deadline)"],"plain_english_summary":"This Airworthiness Directive mandates a Corporate Jets Ltd electrical modification for certain British Aerospace BAe 125 series business jets to prevent earth-wire damage that can cause uncontrolled overvoltage, battery overheating (fire risk), and failure of sensitive equipment. It applies to specific Series F400/F600/700/800 aircraft based on modification history.\n\nThis amendment extends the compliance deadline to 30 April 1994 and permits alternative earth‑wire and relay locations for some configurations."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"The amendment updates the required modification by referencing Revision 1 of the Corporate Jets Service Bulletin, which provides alternate earth locations and relay positions for some Series 400, 600 and 700 aircraft with different configurations. It also sets a new compliance deadline (prior to 30 April 1994), whereas the original issue required compliance prior to 30 June 1992."},"complexity_factors":["Applicability varies by BAe 125 series and by pre/post-mod status, requiring careful fleet identification.","Modification references a multi-part Mandatory Service Bulletin (A–G) Revision 1, increasing procedural detail and parts variation.","Different compliance dates for the original directive (prior to 30 June 1992) and this amendment (prior to 30 April 1994) create tracking obligations.","Technical work involves electrical wiring and relay relocation, requiring qualified maintenance personnel and possible aircraft downtime.","Amendment introduces alternate earth and relay locations for certain configurations, creating configuration-specific implementation choices.","Regulatory cross-reference: Service Bulletin classified as mandatory by CAA(UK), so operators must reconcile international and domestic requirements.","Record-keeping and certification burden on operators to demonstrate compliance to the regulator."],"plain_english_summary":"This airworthiness directive requires specified British Aerospace BAe 125 series aeroplanes to be modified in accordance with Corporate Jets Mandatory Service Bulletin SB‑24‑289‑3267A–G Revision 1 (dated 10 April 1992). Operators must carry out the wiring and relay-location modifications by 30 April 1994. The stated purpose is to reduce the risk that earth‑wire damage causes an uncontrolled overvoltage, battery overheating or failure of sensitive equipment. Aircraft owners/operators pay for the work, maintenance organisations perform it, and operators must record and certify compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-126-amdt-1-electrical-power-generator-power","history":"/api/acts/ad-hs-125-126-amdt-1-electrical-power-generator-power/history","analysis":"/api/acts/ad-hs-125-126-amdt-1-electrical-power-generator-power/analysis","conflicts":"/api/acts/ad-hs-125-126-amdt-1-electrical-power-generator-power/conflicts","importantCases":"/api/acts/ad-hs-125-126-amdt-1-electrical-power-generator-power/important-cases","documents":"/api/acts/ad-hs-125-126-amdt-1-electrical-power-generator-power/documents"}}