{"id":"F2006B04194","name":"AD/BEECH 77/4 - Elevator Control Arm Bushings","slug":"ad-beech-77-4-elevator-control-arm-bushings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43949,"registerId":"commonwealth-F2006B04194-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 77/4 - Elevator Control Arm Bushings","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)  Beechcraft 77 (Skipper) Series Aeroplanes\n\n \n\nAD/BEECH 77/4 Elevator Control Arm Bushings 7/80\n\nApplicability: All model 77 with S/Nos. WA-1 to WA-59. Requirement:  Action in accordance with Beechcraft SI No. 1135. Compliance:               Within 100 hours’ time in service after 31 July 1980.\n\nBackground: There is a possibility of freeplay developing in the elevator control arm during service.\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":1825},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive remains a narrow, technical safety mandate focused solely on the specified maintenance action for the identified aircraft series."},"complexity_factors":["Single, clearly defined aircraft model and serial number range","Single required action referencing external technical standard","Simple, unambiguous compliance deadline","No defined terms, exceptions, or conditional clauses within the instrument"],"plain_english_summary":"**Mandatory Safety Fix for Aircraft Elevator Controls**\n\nThis is a mandatory maintenance order (called an Airworthiness Directive) for specific light aircraft to prevent dangerous looseness in the flight controls.\n\n*   **Who it affects:** Owners and operators of Beechcraft 77 \"Skipper\" aircraft with serial numbers WA-1 through WA-59.\n*   **What must be done:** Inspect and repair the elevator control arm bushings (the pivot points for the tail's up-down control surface) following the manufacturer's Service Instruction No. 1135.\n*   **When:** Within 100 hours of flight time accumulated after 31 July 1980.\n*   **Why it matters:** The directive addresses a risk of \"freeplay\" (unwanted movement or slack) developing in the elevator control system, which could potentially lead to reduced control over the aircraft's pitch."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-77-4-elevator-control-arm-bushings","history":"/api/acts/ad-beech-77-4-elevator-control-arm-bushings/history","analysis":"/api/acts/ad-beech-77-4-elevator-control-arm-bushings/analysis","conflicts":"/api/acts/ad-beech-77-4-elevator-control-arm-bushings/conflicts","importantCases":"/api/acts/ad-beech-77-4-elevator-control-arm-bushings/important-cases","documents":"/api/acts/ad-beech-77-4-elevator-control-arm-bushings/documents"}}