{"id":"F2008L03716","name":"AD/PA-24/29 - Rudder Balance Weight - Installation - CANCELLED","slug":"ad-pa-24-29-rudder-balance-weight-installation-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75436,"registerId":"commonwealth-F2008L03716-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-24 (Comanche) Series Aeroplanes","sectionType":"division","heading":"Piper PA-24 (Comanche) Series Aeroplanes","content":"### Piper PA-24 (Comanche) Series Aeroplanes\n\n| AD/PA-24/29 | Rudder Balance Weight - Installation | 11/2008 |\n| ----------- | ------------------------------------ | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                    |\n| ------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 23 October 2008.                                                                                                                                                      |\n| Background:  | This unique Australian AD specified installation of a rudder balance weight in accordance with Piper SB No. 362A. Compliance was required before February 1973. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n9 September 2008","sortOrder":0},{"sectionNumber":"AD/PA-24/29","sectionType":"part","heading":"AD/PA-24/29","content":"## AD/PA-24/29","sortOrder":1},{"sectionNumber":"Rudder Balance Weight - Installation","sectionType":"part","heading":"Rudder Balance Weight - Installation","content":"## Rudder Balance Weight - Installation","sortOrder":2},{"sectionNumber":"11/2008","sectionType":"part","heading":"11/2008","content":"## 11/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2411},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs exactly the limited function indicated by its title: cancelling a specific Airworthiness Directive. It narrows regulatory scope by removing an obligation rather than expanding it."},"complexity_factors":["Single operative provision cancelling a previous instrument","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation","Consists primarily of a brief background statement and cancellation notice"],"plain_english_summary":"**This document officially cancels an old aviation safety rule for Piper PA-24 Comanche aircraft.**\n\nThe Civil Aviation Safety Authority (CASA) has scrapped Airworthiness Directive AD/PA-24/29, which originally forced owners of these specific light aircraft to install a balance weight on the rudder. This physical modification was intended to prevent dangerous flutter (rapid vibration) in the tail section.\n\n**Key points:**\n*   **What changed:** The requirement to install this rudder weight—originally mandated back in the 1970s—is now completely removed from the regulations.\n*   **Who is affected:** Owners and operators of Piper PA-24 (Comanche) series aeroplanes.\n*   **What this means:** While the original deadline to install the weight was February 1973, this cancellation officially erases the legal obligation entirely as of 23 October 2008. This cleans up the rulebook and confirms that compliance with this specific, decades-old directive is no longer legally required, even if an aircraft missed the original deadline."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-24-29-rudder-balance-weight-installation-cancelled","history":"/api/acts/ad-pa-24-29-rudder-balance-weight-installation-cancelled/history","analysis":"/api/acts/ad-pa-24-29-rudder-balance-weight-installation-cancelled/analysis","conflicts":"/api/acts/ad-pa-24-29-rudder-balance-weight-installation-cancelled/conflicts","importantCases":"/api/acts/ad-pa-24-29-rudder-balance-weight-installation-cancelled/important-cases","documents":"/api/acts/ad-pa-24-29-rudder-balance-weight-installation-cancelled/documents"}}