{"id":"F2006B11073","name":"AD/LA-4/22 - Engine Mount Tie Rod Ends","slug":"ad-la-4-22-engine-mount-tie-rod-ends","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56709,"registerId":"commonwealth-F2006B11073-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LA-4/22 - Engine Mount Tie Rod Ends","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Consolidated Aeronautics, Colonial and LA-4 Series Aeroplanes\n\n \n\nAD/LA-4/22 Engine Mount Tie Rod Ends 8/87\n\nApplicability: All model 250 with S/Nos 2 to 43. Requirement: Action in accordance with REVO Inc SB B-69.\n\nCompliance: Within 100 hours time in service after 31 July 1987 or prior to the issue of the next Maintenance Release after 31 July 1987 whichever is later.\n\n \n\nBackground:  In service experience has found that in some unusual circumstances there is a possibility of exceeding the allowable loads of the current rod ends.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2284},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, targeted scope addressing a specific mechanical defect on defined aircraft models, consistent with the original purpose of airworthiness safety mandates."},"complexity_factors":["Defers all technical requirements to external manufacturer service bulletin (REVO Inc SB B-69) not reproduced in the text","Conditional compliance deadline requiring calculation based on flight hours versus maintenance release dates"],"plain_english_summary":"Operators of Consolidated Aeronautics Model 250 (Colonial and LA-4 series, S/N 2–43) must inspect or replace engine mount tie rod ends per REVO Inc Service Bulletin B-69. Compliance is required within 100 flight hours after 31 July 1987 or before the next Maintenance Release thereafter. This prevents possible tie-rod failure that could allow engine movement or detachment, risking catastrophic loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-la-4-22-engine-mount-tie-rod-ends","history":"/api/acts/ad-la-4-22-engine-mount-tie-rod-ends/history","analysis":"/api/acts/ad-la-4-22-engine-mount-tie-rod-ends/analysis","conflicts":"/api/acts/ad-la-4-22-engine-mount-tie-rod-ends/conflicts","importantCases":"/api/acts/ad-la-4-22-engine-mount-tie-rod-ends/important-cases","documents":"/api/acts/ad-la-4-22-engine-mount-tie-rod-ends/documents"}}