{"id":"F2006B05447","name":"AD/PA-23/14 - Rudder Trim Tab Control Rod - Inspection","slug":"ad-pa-23-14-rudder-trim-tab-control-rod-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46183,"registerId":"commonwealth-F2006B05447-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-23/14 - Rudder Trim Tab Control Rod - 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)  Piper PA-23 (Apache and Aztec) Series Aeroplanes\n\n \n\nAD/PA-23/14 Rudder Trim Tab Control Rod - Inspection NK\n\nApplicability: Model PA-23. Document:  Piper SB No. 159.\n\nCompliance: Forthwith.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1725},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains a narrow, technical scope typical of Airworthiness Directives. It addresses a specific safety-critical component (rudder trim tab control rod) for a specific aircraft model (PA-23) without expanding into broader operational or administrative requirements."},"complexity_factors":["Extremely brief document with a single operational requirement","No defined terms or interpretation section","No conditional logic, exceptions, or nested requirements","Only one external cross-reference (Piper SB No. 159)"],"plain_english_summary":"**What this does**\n\nThis is a safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA). It mandates an immediate inspection of a specific aircraft part — the **rudder trim tab control rod** (a component that helps keep the plane flying straight) — on certain Piper aircraft.\n\n**Who it affects**\n\nAnyone who owns, operates, or maintains **Piper PA-23 Apache or Aztec aircraft** (specifically Model PA-23).\n\n**What you must do**\n\nYou must inspect the rudder trim tab control rod **'forthwith'** — meaning immediately, before the next flight — following the procedures in **Piper Service Bulletin No. 159**. This is not optional; compliance is legally required under Part 39 of the Civil Aviation Safety Regulations.\n\n**Why this matters**\n\nThis directive addresses a potential mechanical defect that could affect aircraft control. CASA has determined this inspection is necessary to ensure flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection","history":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection/history","analysis":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection/analysis","conflicts":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection/conflicts","importantCases":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection/important-cases","documents":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection/documents"}}