{"id":"F2008L01838","name":"AD/PA-22/16 - Tail Brace Clevises - Replacement - CANCELLED","slug":"ad-pa-22-16-tail-brace-clevises-replacement-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74027,"registerId":"commonwealth-F2008L01838-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Piper PA-22 (Tri-Pacer and Colt) Series ","sectionType":"division","heading":"Piper PA-22 (Tri-Pacer and Colt) Series Aeroplanes","content":"### Piper PA-22 (Tri-Pacer and Colt) Series Aeroplanes\n\n| AD/PA-22/16 | Tail Brace Clevises - Replacement | 7/2008 |\n| ----------- | --------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                 |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 3 July 2008.                                                                                                                                                                                                                                                                       |\n| Background:  | This Directive, which was not based on a US directive, specified once-only replacement of tail brace clevises and bushings in accordance with Piper SB No. 198. Piper provided replacement parts in 1961 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\n19 May 2008","sortOrder":0},{"sectionNumber":"AD/PA-22/16","sectionType":"part","heading":"AD/PA-22/16","content":"## AD/PA-22/16","sortOrder":1},{"sectionNumber":"Tail Brace Clevises - Replacement","sectionType":"part","heading":"Tail Brace Clevises - Replacement","content":"## Tail Brace Clevises - Replacement","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":1165},"content_quality":"ok","complexity_score":1,"rejection_reason":"","scope_assessment":{"changed":false,"description":"This is a cancellation instrument that terminates the previous Airworthiness Directive entirely. It does not expand, restrict, or alter the scope of regulatory requirements; rather, it removes them completely because they are obsolete."},"complexity_factors":["Single operative provision (cancellation of previous instrument)","No defined terms or interpretation section","No procedural steps, conditions, or exceptions","Minimal background explanation (3 sentences)","No cross-references to other legislation beyond the cancelled AD"],"plain_english_summary":"This document officially cancels an old aircraft safety rule that applied to specific Piper aeroplane models (the PA-22 Tri-Pacer and Colt series). The original rule required owners to replace **tail brace clevises and bushings** (metal fittings that connect structural parts in the tail section) according to manufacturer instructions. Because Piper supplied replacement parts way back in 1961, every affected aircraft would have been modified decades ago, making the rule redundant. **Who it affects:** Owners and operators of Piper PA-22 series aircraft—though since the directive is cancelled, it currently imposes no obligations. **Why it matters:** It cleans up the rulebook by removing an obsolete safety requirement that no longer serves any purpose."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-22-16-tail-brace-clevises-replacement-cancelled","history":"/api/acts/ad-pa-22-16-tail-brace-clevises-replacement-cancelled/history","analysis":"/api/acts/ad-pa-22-16-tail-brace-clevises-replacement-cancelled/analysis","conflicts":"/api/acts/ad-pa-22-16-tail-brace-clevises-replacement-cancelled/conflicts","importantCases":"/api/acts/ad-pa-22-16-tail-brace-clevises-replacement-cancelled/important-cases","documents":"/api/acts/ad-pa-22-16-tail-brace-clevises-replacement-cancelled/documents"}}