{"id":"F2006B11181","name":"AD/LTS/2 - Inspection of Torque Applied to Number Ten Bearing Outer Race Nut 4-082-052-02","slug":"ad-lts-2-inspection-of-torque-applied-to-number-ten-bearing-outer-race-nut-4-082-052-02","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56880,"registerId":"commonwealth-F2006B11181-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LTS/2 - Inspection of Torque Applied to Number Ten Bearing Outer Race Nut 4-082-052-02","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/2 Inspection Of Torque Applied To Number Ten\n\nBearing Outer Race Nut 4-082-052-02\n\n  \n1/86\n\nApplicability: All model LTS 101-650C-2 and \\-650C-3 gas turbine engines prior to Serial Number LE41146.\n\n| Document:   | 1.  | Avco Lycoming Service Bulletin No. LTS 101C-72-0017; or                  |\n| ----------- | --- | ------------------------------------------------------------------------ |\n|             | 2.  | AD/LYC-T/19.                                                             |\n| Compliance: | 1.  | On installed engines no later than next periodic (100 hours) inspection. |\n|             | 2.  | On uninstalled engines or modules prior to installation.                 |\n\nBackground: There is the possibility of insufficient torque on the No. 10 bearing outer races. This Directive requires a torque check to be carried out on the applicable engines to ensure retention of the outer races.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1164},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow technical scope addressing the specific mechanical defect in the No. 10 bearing outer race nut torque. It has not expanded beyond the original safety issue identified in the 1986 issuance."},"complexity_factors":["Technical aviation engineering terminology (bearing outer race nut, torque specifications, gas turbine modules)","Serial number cutoff applicability (prior to LE41146)","Cross-references to external technical documents (Service Bulletin LTS 101C-72-0017 and prior AD/LYC-T/19)","Differentiated compliance timelines for installed versus uninstalled engines"],"plain_english_summary":"This Airworthiness Directive requires mechanics to verify the torque of the Number Ten Bearing Outer Race Nut on Lycoming LTS 101-650C-2 and LTS 101-650C-3 turbine engines (serials before LE41146). For installed engines check at the next 100‑hour inspection; for spares check before installation. A loose nut could allow bearing outer races to come free and lead to in‑flight engine failure. Follow the manufacturer’s Service Bulletin or the earlier AD for procedures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-lts-2-inspection-of-torque-applied-to-number-ten-bearing-outer-race-nut-4-082-052-02","history":"/api/acts/ad-lts-2-inspection-of-torque-applied-to-number-ten-bearing-outer-race-nut-4-082-052-02/history","analysis":"/api/acts/ad-lts-2-inspection-of-torque-applied-to-number-ten-bearing-outer-race-nut-4-082-052-02/analysis","conflicts":"/api/acts/ad-lts-2-inspection-of-torque-applied-to-number-ten-bearing-outer-race-nut-4-082-052-02/conflicts","importantCases":"/api/acts/ad-lts-2-inspection-of-torque-applied-to-number-ten-bearing-outer-race-nut-4-082-052-02/important-cases","documents":"/api/acts/ad-lts-2-inspection-of-torque-applied-to-number-ten-bearing-outer-race-nut-4-082-052-02/documents"}}