{"id":"F2008L01852","name":"AD/PA-23/14 - Rudder Trim Tab Control Rod - Inspection - CANCELLED","slug":"ad-pa-23-14-rudder-trim-tab-control-rod-inspection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74049,"registerId":"commonwealth-F2008L01852-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Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-23 (Apache and Aztec) Series Ae","sectionType":"division","heading":"Piper PA-23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-23/14 | Rudder Trim Tab Control Rod - Inspection | 7/2008 |\n| ----------- | ---------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                    |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 3 July 2008.                                                                                                                                                                                                                                          |\n| Background:  | This Directive was based on FAA AD 57-21-01 and SB No. 159. It called for a once-only inspection of the rudder trim tab control rod. The FAA AD and SB were issued in 1957, so all affected aircraft would have been modified long ago. Hence, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n20 May 2008","sortOrder":0},{"sectionNumber":"AD/PA-23/14","sectionType":"part","heading":"AD/PA-23/14","content":"## AD/PA-23/14","sortOrder":1},{"sectionNumber":"Rudder Trim Tab Control Rod - Inspection","sectionType":"part","heading":"Rudder Trim Tab Control Rod - Inspection","content":"## Rudder Trim Tab Control Rod - Inspection","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":1889},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the previous directive without expanding its scope or purpose. It is a straightforward revocation based on obsolescence."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references to other legislation","References only historical (1957) safety notices rather than complex current law"],"plain_english_summary":"This instrument **cancels** an old aircraft safety inspection rule.\n\n**What it cancelled**\nPreviously, a directive called AD/PA-23/14 required owners of Piper PA-23 Apache and Aztec aeroplanes to perform a one-time inspection of the rudder trim tab control rod (a part that helps control the aircraft's steering). This requirement came from an American safety notice dating back to 1957.\n\n**Why it was cancelled**\nThe Civil Aviation Safety Authority determined this inspection is no longer necessary because:\n* The original safety notice was issued in 1957\n* All affected aircraft would have been modified decades ago\n* The requirement is now obsolete\n\n**Who is affected**\nOwners and operators of Piper PA-23 series aircraft. Since the directive is cancelled, **no action is required**."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection-cancelled","history":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection-cancelled/history","analysis":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection-cancelled/analysis","conflicts":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection-cancelled/conflicts","importantCases":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection-cancelled/important-cases","documents":"/api/acts/ad-pa-23-14-rudder-trim-tab-control-rod-inspection-cancelled/documents"}}