{"id":"F2006B09422","name":"AD/ELECT/47 - Propeller De-Ice Terminal Clamp Assembly","slug":"ad-elect-47-propeller-de-ice-terminal-clamp-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53809,"registerId":"commonwealth-F2006B09422-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ELECT/47 - Propeller De-Ice Terminal Clamp Assembly","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 - 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Electrical Equipment\n\n \n\nAD/ELECT/47 Propeller De-Ice Terminal Clamp Assembly 1/86\n\nApplicability: B.F. Goodrich propeller de-icer terminal clamp assembly P/No 3E1883-2 fitted to Hartzell HC-B3TN and HC-B4TN series propellers.\n\n \n\nRequirement: Inspect the terminal clamp assembly for cracks according to the requirements of B.F. Goodrich SB No E-85-71.\n\n \n\nCompliance: Prior to issue of the next maintenance release after 31 January 1986.\n\n \n\nBackground: Overstressing of the terminal clamp assembly during maintenance may cause cracking around the attachment holes. Complete failure may lead to the separation of the terminal clamp assembly from the propeller with the possibility of striking the aircraft fuselage.\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":2210},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, targeted scope focused solely on the safety inspection of one specific aircraft component (B.F. Goodrich terminal clamp assembly P/No 3E1883-2). The scope has not expanded beyond the original safety issue identified."},"complexity_factors":["Single specific requirement with no conditional logic or exceptions","No interpretation section or defined terms","Brief reference to external technical standard (Service Bulletin E-85-71) for inspection procedures","Limited applicability restricted to specific part number and propeller models"],"plain_english_summary":"**What this does:** This is a mandatory safety notice (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority. It requires aircraft owners and operators to inspect a specific electrical component on certain propellers for dangerous cracks.\n\n**Who it affects:** Anyone operating aircraft fitted with Hartzell HC-B3TN or HC-B4TN series propellers that have a B.F. Goodrich de-icer terminal clamp (part number 3E1883-2) installed.\n\n**What must be done:** The terminal clamp assembly must be inspected for cracks following the procedures in B.F. Goodrich Service Bulletin E-85-71. This inspection must be completed before the aircraft's next maintenance release (a safety certificate issued after maintenance work) is issued after 31 January 1986.\n\n**Why it matters:** If mechanics over-tighten the clamp during maintenance, it can develop cracks around the bolt holes. If the clamp completely breaks, it can separate from the propeller and strike the aircraft fuselage, potentially causing structural damage or injury."}},"importantCases":[],"_links":{"self":"/api/acts/ad-elect-47-propeller-de-ice-terminal-clamp-assembly","history":"/api/acts/ad-elect-47-propeller-de-ice-terminal-clamp-assembly/history","analysis":"/api/acts/ad-elect-47-propeller-de-ice-terminal-clamp-assembly/analysis","conflicts":"/api/acts/ad-elect-47-propeller-de-ice-terminal-clamp-assembly/conflicts","importantCases":"/api/acts/ad-elect-47-propeller-de-ice-terminal-clamp-assembly/important-cases","documents":"/api/acts/ad-elect-47-propeller-de-ice-terminal-clamp-assembly/documents"}}