{"id":"F2006B10428","name":"AD/HS 125/148 - Electrical Power Diode Connections","slug":"ad-hs-125-148-electrical-power-diode-connections","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116119,"registerId":"commonwealth-F2006B10428-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HS 125/148 - Electrical Power Diode Connections","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 125/148 Electrical Power Diode Connections 4/95\n\nApplicability: BAe 125 Series 800A & B, 1000A & B, Hawker 800 and 1000 aircraft identified in Hawker Raytheon Corporate Jets Mandatory Service Bulletin SB 24-317 dated\n\n22 December 1994.\n\nRequirement: Inspect the soldered diode connections on panels ZL (800 Series) or ZK (1000 Series) for integrity of the soldered joint and if necessary, resolder any unacceptable connections in accordance with the Accomplishment Instructions of Hawker Raytheon Corporate Jets Mandatory Service Bulletin SB 24-317 dated 22 December 1994.\n\nNote: This Service Bulletin has been classified as Mandatory by the CAA(UK).\n\nCompliance: Prior to 31 August 1995.\n\nBackground: Hawker Raytheon has received reports of imperfect soldered connections in the engine starting and battery emergency control circuits, which have led to intermittent fault symptoms in these systems. Compliance with this Directive is designed to eliminate these intermittent fault systems. The CAA(UK) compliance date is extended by one calendar month for Australian registered aircraft.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive implements the manufacturer's mandatory service bulletin to inspect and repair specific diode solder joints to eliminate intermittent faults in engine-start and battery-emergency circuits. There is no indication in the text that the directive expands or narrows that original technical scope."},"complexity_factors":["Narrow applicability — specific BAe 125/Hawker 800/1000 aircraft identified in SB 24-317","Works by a single, well-defined action: inspect and resolder diode solder joints","Procedural reliance on the manufacturer's Accomplishment Instructions in SB 24-317 (external normative document)","Technical judgment required to assess ‘integrity of the soldered joint’","Fixed compliance deadline (31 August 1995) creates scheduling and downtime considerations","Regulatory classification noted as Mandatory by CAA(UK) — enforces compliance"],"plain_english_summary":"This airworthiness directive requires operators of specified BAe 125/Hawker 800/1000 aircraft to inspect the soldered diode connections on panels ZL (800 series) or ZK (1000 series) and, if a joint is unacceptable, resolder it following Hawker Raytheon Mandatory Service Bulletin SB 24-317 (22 Dec 1994). The stated purpose is to remove intermittent faults in engine-starting and battery-emergency circuits. Compliance must be completed by 31 August 1995, imposing an inspection/repair cost and possible aircraft downtime for operators."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on electrical diode connections. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, specific technical requirement (inspect and resolder if necessary)","Only 2 defined model categories (800 Series and 1000 Series)","No nested exceptions or conditional logic","No cross-references to other legislation beyond the named service bulletin","Short, single-purpose directive with clear applicability criteria","Straightforward compliance deadline with simple one-month extension"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection—and resoldering where needed—of soldered diode connections in engine start and emergency battery control circuits on specified British Aerospace BAe 125/Hawker 800/1000 series aircraft, per a Hawker Raytheon service bulletin. It targets owners/operators of the listed aircraft because intermittent faults could impair engine start or emergency power; compliance was required by 31 August 1995."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-148-electrical-power-diode-connections","history":"/api/acts/ad-hs-125-148-electrical-power-diode-connections/history","analysis":"/api/acts/ad-hs-125-148-electrical-power-diode-connections/analysis","conflicts":"/api/acts/ad-hs-125-148-electrical-power-diode-connections/conflicts","importantCases":"/api/acts/ad-hs-125-148-electrical-power-diode-connections/important-cases","documents":"/api/acts/ad-hs-125-148-electrical-power-diode-connections/documents"}}