{"id":"F2006B07502","name":"AD/TSA-600/38 Amdt 1 - Fatigue Critical Components - Retirement Lives","slug":"ad-tsa-600-38-amdt-1-fatigue-critical-components-retirement-lives","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49979,"registerId":"commonwealth-F2006B07502-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TSA-600/38 Amdt 1 - Fatigue Critical Components - Retirement Lives","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)  \nAerostar (Piper/Ted Smith) 600 and 700 Series Aeroplanes\n\nAD/TSA-600/38\n\nAmdt 1\n\n  \nFatigue Critical Components \\- Retirement Lives 2/89\n\nApplicability: All models.\n\nRequirement: All components listed in the Airworthiness Limitations, Chapter 4 of the Piper Aerostar Maintenance Manual dated 31 January 1980 incorporating Interim Revision 860920 dated 20 September 1986, shall be retired from service at or before the times quoted therein, with the following exceptions and additions:\n\n    For models 601P, 602P, 700P aircraft:\n\nRetire cockpit windshield from service on or prior to achieving 3300 pressurized flight cycles component time in service.\n\nRetire cabin windows from service on or prior to achieving 6600 pressurized flight cycles component time in service.\n\n    2. For models 600, 601, 601P, 602P with Machen-modified Lycoming IO-540 or TIO-540 series engines, retire Hartzell HC-C4YR-2/FC6660 (B, K) or HC-C4YR- 2L/FJC6660 (B, K) propeller blades from service at or before 10500 hours component time in service. (Hartzell SL61M refers).\n\nNote: Associated propeller hub parts are not affected.\n\nCompliance: Forthwith.\n\nBackground: The original issue of this Directive established propeller blade life limits for Machen installations. It also incorporated the component retirement requirements of AD/TSA- 600/3.\n\nAmendment 1 expands the applicability of exception (1) to apply window life limits to all of the pressurised Aerostar models.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2026},"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"Amendment 1 expands the window life limits to cover all pressurized Aerostar models (601P, 602P, 700P), but this remains within the original scope of establishing retirement lives for fatigue-critical components rather than introducing new regulatory areas."},"complexity_factors":["External cross-reference to specific revision of Piper Aerostar Maintenance Manual Chapter 4","Cross-reference to Hartzell Service Letter SL61M","Model-specific conditional applicability (pressurized vs non-pressurized variants)","Engine-specific exceptions (Machen-modified Lycoming installations)","Mixed measurement units (pressurized flight cycles versus flight hours)","Amendment structure modifying prior directive requirements"],"plain_english_summary":"This directive requires owners/operators of Piper/Ted Smith Aerostar 600/700 series aircraft to retire fatigue-prone parts on fixed schedules to prevent metal-fatigue failures. Compliance is immediate.\n\nKey mandates: retire components per the Piper Aerostar Maintenance Manual limits; for pressurized models (601P/602P/700P) replace cockpit windshields at 3,300 pressurized cycles and cabin windows at 6,600 cycles; replace Hartzell HC‑C4YR propeller blades on Machen‑modified Lycoming engines after 10,500 flight hours."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tsa-600-38-amdt-1-fatigue-critical-components-retirement-lives","history":"/api/acts/ad-tsa-600-38-amdt-1-fatigue-critical-components-retirement-lives/history","analysis":"/api/acts/ad-tsa-600-38-amdt-1-fatigue-critical-components-retirement-lives/analysis","conflicts":"/api/acts/ad-tsa-600-38-amdt-1-fatigue-critical-components-retirement-lives/conflicts","importantCases":"/api/acts/ad-tsa-600-38-amdt-1-fatigue-critical-components-retirement-lives/important-cases","documents":"/api/acts/ad-tsa-600-38-amdt-1-fatigue-critical-components-retirement-lives/documents"}}