{"id":"F2006B09440","name":"AD/ELECT/65 - Marathon Power Technologies PC-250 Static Inverter","slug":"ad-elect-65-marathon-power-technologies-pc-250-static-inverter","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53863,"registerId":"commonwealth-F2006B09440-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ELECT/65 - Marathon Power Technologies PC-250 Static Inverter","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nElectrical Equipment\n\nAD/ELECT/65 Marathon Power Technologies PC-250 Static Inverter\n\n  \n10/94\n\nApplicability: Marathon Power Technologies PC-250 series static inverters, where installed to provide a source of emergency or standby electrical power.\n\nNote: These inverters are known to be installed in, but not limited to, the following aircraft models:\n\nHawker 800 and BAe 125 Series 800 prior to Constructors Number 258248\n\nDH/BH/HS/BAe 125 Series 1 to 700 post modification 252740\n\nRequirement: Action in accordance with Marathon Power Technologies Service Bulletin 111692- 014 Revision 1 dated 15 March 1993.\n\nNote: CAA(UK) AD 005-05-94 refers.\n\nCompliance: Prior to 15 March 1995.\n\nBackground: The CAA(UK) has reported that PC-250 static inverters have failed because of moisture ingress. Compliance with this Directive will ensure that the inverters are protected from moisture ingress.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1591},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, targeted scope focused solely on rectifying the identified moisture ingress defect in PC-250 static inverters. It has not expanded beyond the original safety concern for this specific component."},"complexity_factors":["Single specific part number identified (PC-250 series)","One clear compliance action referencing a single Service Bulletin","Fixed calendar deadline with no conditional exceptions or phased compliance","Limited applicability list confined to specific aircraft models","No defined terms, nested conditions, or cross-references to other legislative instruments"],"plain_english_summary":"Owners and operators of certain Hawker 800 and BAe 125-series aircraft fitted with Marathon Power Technologies PC-250 static inverters must comply with a mandatory airworthiness directive requiring modification of the inverter per Service Bulletin 111692-014 Rev 1 (15 Mar 1993) to prevent moisture ingress. The mod was required by 15 Mar 1995 because moisture-related failures can disable the inverter that supplies emergency/standby electrical power, risking loss of critical systems."}},"importantCases":[],"_links":{"self":"/api/acts/ad-elect-65-marathon-power-technologies-pc-250-static-inverter","history":"/api/acts/ad-elect-65-marathon-power-technologies-pc-250-static-inverter/history","analysis":"/api/acts/ad-elect-65-marathon-power-technologies-pc-250-static-inverter/analysis","conflicts":"/api/acts/ad-elect-65-marathon-power-technologies-pc-250-static-inverter/conflicts","importantCases":"/api/acts/ad-elect-65-marathon-power-technologies-pc-250-static-inverter/important-cases","documents":"/api/acts/ad-elect-65-marathon-power-technologies-pc-250-static-inverter/documents"}}