{"id":"F2006B02777","name":"AD/B727/74 - Elevator Balance Panel Aft Hinge - Inspection","slug":"ad-b727-74-elevator-balance-panel-aft-hinge-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42119,"registerId":"commonwealth-F2006B02777-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B727/74 - Elevator Balance Panel Aft Hinge - Inspection","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)  Boeing 727 Series Aeroplanes\n\n \n\nAD/B727/74 Elevator Balance Panel Aft Hinge - Inspection 10/76\n\nApplicability: All models.\n\n \n\nDocument: 1. Boeing SB No. 727-55-A65; or\n\n \n\n2. FAA AD 75-15-06.\n\n \n\nCompliance: Within 250 hours time in service after 29 October 1976.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2110},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument maintains its original narrow technical scope. It mandates a specific structural inspection for a single aircraft type (Boeing 727) and has not expanded to include additional systems, aircraft types, or operational requirements beyond the elevator balance panel hinge inspection."},"complexity_factors":["Single, unambiguous compliance requirement","No defined terms or interpretation sections","Only two external technical references","Simple deadline calculation (250 hours after fixed date)","Broad applicability with no exceptions or exemptions stated"],"plain_english_summary":"**What it does:** This is a safety rule requiring operators of Boeing 727 aircraft to inspect a specific part—the **aft (rear) hinge on the elevator balance panel** (a control surface on the tail).\n\n**Who it affects:** All operators of Boeing 727 aircraft, regardless of the specific model.\n\n**What must be done:** The inspection must be completed within **250 hours of flight time** after 29 October 1976, following the technical procedures in either Boeing Service Bulletin 727-55-A65 or FAA Airworthiness Directive 75-15-06.\n\n**Why it matters:** The rule ensures the structural integrity of the elevator control system, preventing potential failures that could compromise aircraft safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b727-74-elevator-balance-panel-aft-hinge-inspection","history":"/api/acts/ad-b727-74-elevator-balance-panel-aft-hinge-inspection/history","analysis":"/api/acts/ad-b727-74-elevator-balance-panel-aft-hinge-inspection/analysis","conflicts":"/api/acts/ad-b727-74-elevator-balance-panel-aft-hinge-inspection/conflicts","importantCases":"/api/acts/ad-b727-74-elevator-balance-panel-aft-hinge-inspection/important-cases","documents":"/api/acts/ad-b727-74-elevator-balance-panel-aft-hinge-inspection/documents"}}