{"id":"F2006B11182","name":"AD/LTS/3 - Power Turbine Governor - Functional Check/Replacement","slug":"ad-lts-3-power-turbine-governor-functional-check-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56882,"registerId":"commonwealth-F2006B11182-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LTS/3 - Power Turbine Governor - Functional Check/Replacement","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nAlliedSignal (Lycoming) Turbine Engines \\- LTS 101 Series\n\nAD/LTS/3 Power Turbine Governor \\- Functional Check/Replacement\n\n  \n1/86\n\nApplicability: All LTS 101-750C-1 engines with S/N as listed in Requirement Document which have power turbine governors P/N 4-302-024-02 or -02A fitted.\n\nRequirement: 1. Carry out power turbine governor evaluation check in accordance with Lycoming Service Bulletin No. LTS101C-73-20-0058 Rev. 1 paras 2, 3 and 4; or\n\n2. AD/LYC-T/25.\n\nCompliance: Unless already accomplished: within 100 hours time in service after 31 May 1985, or on the installation of affected engine/power turbine governor or prior to issue of Australian Certificate of Airworthiness.\n\nBackground: This directive is issued to ensure the mandatory evaluation of some power turbine governors to verify performance.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3088},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope targeting specific Lycoming engine models and power turbine governor part numbers for mandatory safety evaluation."},"complexity_factors":["References external technical document: Lycoming Service Bulletin No. LTS101C-73-20-0058 Rev 1","Alternative compliance pathway via cross-reference to AD/LYC-T/25","Specific applicability limited to precise part numbers (P/N 4-302-024-02 or -02A) and engine serial number ranges","Three alternative compliance triggers (flight hours, installation event, or airworthiness certification)"],"plain_english_summary":"This mandatory aviation safety rule requires owners/operators of aircraft with Lycoming LTS 101-750C-1 turbine engines (with specific serial numbers) using power turbine governors P/N 4-302-024-02 or -02A to perform a functional check of the governor. \n\nCompliance must follow Lycoming Service Bulletin LTS101C-73-20-0058, Revision 1 (or AD/LYC-T/25) within 100 flight hours after 31 May 1985, on installation, or before issuing an Australian Certificate of Airworthiness."}},"importantCases":[],"_links":{"self":"/api/acts/ad-lts-3-power-turbine-governor-functional-check-replacement","history":"/api/acts/ad-lts-3-power-turbine-governor-functional-check-replacement/history","analysis":"/api/acts/ad-lts-3-power-turbine-governor-functional-check-replacement/analysis","conflicts":"/api/acts/ad-lts-3-power-turbine-governor-functional-check-replacement/conflicts","importantCases":"/api/acts/ad-lts-3-power-turbine-governor-functional-check-replacement/important-cases","documents":"/api/acts/ad-lts-3-power-turbine-governor-functional-check-replacement/documents"}}