{"id":"F2009L00136","name":"AD/PA-23/69 - Stabilator Tab - Modification - CANCELLED","slug":"ad-pa-23-69-stabilator-tab-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76571,"registerId":"commonwealth-F2009L00136-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-23 (Apache and Aztec) Series Ae","sectionType":"division","heading":"Piper PA-23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-23/69 | Stabilator Tab - Modification | 2/2009 |\n| ----------- | ----------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                     |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 12 February 2009.                                                                                                                                                      |\n| Background:  | This unique Australian AD specified modification of the stabilator tab in accordance with Piper SB No. 514 within 100 hours time in service after November 1976. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n23 December 2008","sortOrder":0},{"sectionNumber":"AD/PA-23/69","sectionType":"part","heading":"AD/PA-23/69","content":"## AD/PA-23/69","sortOrder":1},{"sectionNumber":"Stabilator Tab - Modification","sectionType":"part","heading":"Stabilator Tab - Modification","content":"## Stabilator Tab - Modification","sortOrder":2},{"sectionNumber":"2/2009","sectionType":"part","heading":"2/2009","content":"## 2/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1283},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"The instrument eliminates the entire scope of the original Airworthiness Directive. The previous mandate requiring stabilator tab modifications for Piper PA-23 aircraft has been completely removed, leaving no ongoing obligations."},"complexity_factors":["Extremely short document with minimal substantive content","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislative provisions","Single straightforward administrative action (cancellation of prior directive)"],"plain_english_summary":"**What this is:** A cancellation notice for a previous aviation safety rule.\n\n**Who it affects:** Owners and operators of **Piper PA-23 Apache and Aztec aircraft**.\n\n**What it does:** This document cancels an earlier Airworthiness Directive (AD/PA-23/69) that required a specific modification to the **stabilator tab** (a movable control surface on the aircraft's tail that helps control pitch). The original rule required this modification to be completed within 100 hours of flying time after November 1976, following Piper Service Bulletin No. 514.\n\n**Why it matters:** As of 12 February 2009, aircraft owners and operators are no longer legally required to comply with this specific modification. The Civil Aviation Safety Authority (CASA) has determined the safety requirement is no longer necessary."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-69-stabilator-tab-modification-cancelled","history":"/api/acts/ad-pa-23-69-stabilator-tab-modification-cancelled/history","analysis":"/api/acts/ad-pa-23-69-stabilator-tab-modification-cancelled/analysis","conflicts":"/api/acts/ad-pa-23-69-stabilator-tab-modification-cancelled/conflicts","importantCases":"/api/acts/ad-pa-23-69-stabilator-tab-modification-cancelled/important-cases","documents":"/api/acts/ad-pa-23-69-stabilator-tab-modification-cancelled/documents"}}