{"id":"F2008L01853","name":"AD/PA-23/19 - Elevator Control Tube Bellcrank Attachment - Modification - CANCELLED","slug":"ad-pa-23-19-elevator-control-tube-bellcrank-attachment-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74051,"registerId":"commonwealth-F2008L01853-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-23 (Apache and Aztec) Series Ae","sectionType":"division","heading":"Piper PA-23 (Apache and Aztec) Series Aeroplanes","content":"### Piper PA-23 (Apache and Aztec) Series Aeroplanes\n\n| AD/PA-23/19 | Elevator Control Tube BellcrankAttachment - Modification | 7/2008 |\n| ----------- | -------------------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                     |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 3 July 2008.                                                                                                                                                                           |\n| Background:  | This Directive was based on Piper Service Bulletin No. 176 calling for once-only replacement of a self-locking nut. As all affected aircraft would have been modified long ago, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n7 May 2008","sortOrder":0},{"sectionNumber":"AD/PA-23/19","sectionType":"part","heading":"AD/PA-23/19","content":"## AD/PA-23/19","sortOrder":1},{"sectionNumber":"Elevator Control Tube BellcrankAttachmen","sectionType":"part","heading":"Elevator Control Tube BellcrankAttachment - Modification","content":"## Elevator Control Tube Bellcrank  \nAttachment - Modification","sortOrder":2},{"sectionNumber":"7/2008","sectionType":"part","heading":"7/2008","content":"## 7/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1649},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs exactly its stated function of cancelling a previous Airworthiness Directive. It does not expand beyond this single purpose of removing a superseded safety requirement."},"complexity_factors":["Single operative provision (cancellation) with no substantive requirements","No defined terms or interpretation section","Only external reference is to the cancelled AD and a manufacturer service bulletin","No conditional logic, exceptions, or procedural steps"],"plain_english_summary":"This document officially cancels a previous aircraft safety rule (**Airworthiness Directive**) that required owners of Piper PA-23 Apache and Aztec aeroplanes to replace a specific nut in the elevator control system. The original rule was issued because a self-locking nut in the **bellcrank attachment** (a pivot point that helps move the elevator) needed replacement to ensure flight safety. Since this was a **once-only modification** that would have been completed on all affected aircraft long ago, the Civil Aviation Safety Authority has scrapped the rule as it is no longer needed.\n\n**Who this affects:**\n- Owners and operators of Piper PA-23 (Apache and Aztec) series aircraft\n\n**What this means:**\n- You are no longer legally required to comply with the previous directive AD/PA-23/19\n- If you own one of these aircraft, the required nut replacement should already have been performed under the old rule"}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-19-elevator-control-tube-bellcrank-attachment-modification-cancelled","history":"/api/acts/ad-pa-23-19-elevator-control-tube-bellcrank-attachment-modification-cancelled/history","analysis":"/api/acts/ad-pa-23-19-elevator-control-tube-bellcrank-attachment-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-23-19-elevator-control-tube-bellcrank-attachment-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-23-19-elevator-control-tube-bellcrank-attachment-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-23-19-elevator-control-tube-bellcrank-attachment-modification-cancelled/documents"}}