{"id":"F2008L00167","name":"AD/CESSNA 188/15 - Control Systems - CANCELLED","slug":"ad-cessna-188-15-control-systems-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":72336,"registerId":"commonwealth-F2008L00167-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 188 (Agwagon) Series Aeroplanes","sectionType":"division","heading":"Cessna 188 (Agwagon) Series Aeroplanes","content":"### Cessna 188 (Agwagon) Series Aeroplanes\n\n| AD/CESSNA 188/15 | Control Systems | 2/2008 |\n| ---------------- | --------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                                |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 14 February 2008.                                                                                                                                                                                                                                                                                 |\n| Background:  | This is a unique Australian AD issued in 1970 requiring a once off replacement of a number of NAS 679 lock nuts installed on Cessna aircraft between April and November in 1969. These nuts were suspected to have a manufacturing flaw. As all nuts would have now been replaced, the unsafe condition no longer exists. |\n\n![](image.001.png)\n\nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n20 December 2007","sortOrder":0},{"sectionNumber":"AD/CESSNA 188/15","sectionType":"part","heading":"AD/CESSNA 188/15","content":"## AD/CESSNA 188/15","sortOrder":1},{"sectionNumber":"Control Systems","sectionType":"part","heading":"Control Systems","content":"## Control Systems","sortOrder":2},{"sectionNumber":"2/2008","sectionType":"part","heading":"2/2008","content":"## 2/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1651},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the original 1970 directive rather than expanding its scope. The original directive had a narrow, specific purpose (one-time replacement of faulty nuts on specific aircraft), and this cancellation simply ends that requirement because its safety objective has been achieved."},"complexity_factors":["Document is a simple cancellation notice with no operative provisions","Single historical background paragraph with no legal conditions","No defined terms, cross-references, or exceptions","No ongoing obligations or compliance requirements"],"plain_english_summary":"**What this is:** An Airworthiness Directive (a safety order issued for aircraft) that has been cancelled.\n\n**What it originally did:** First issued in 1970, this directive required owners of Cessna 188 \"Agwagon\" agricultural aircraft to replace specific lock nuts (NAS 679 nuts) that were installed between April and November 1969. These nuts had a suspected manufacturing flaw that could potentially affect the aircraft's control systems.\n\n**Why it matters now:** This directive was officially cancelled on 14 February 2008. The cancellation occurred because sufficient time had passed that all affected nuts would have been replaced by now, meaning the safety risk no longer exists. This document simply records that cancellation and confirms the directive no longer applies.\n\n**Current status:** This directive has no legal effect and imposes no current requirements on aircraft owners."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-188-15-control-systems-cancelled","history":"/api/acts/ad-cessna-188-15-control-systems-cancelled/history","analysis":"/api/acts/ad-cessna-188-15-control-systems-cancelled/analysis","conflicts":"/api/acts/ad-cessna-188-15-control-systems-cancelled/conflicts","importantCases":"/api/acts/ad-cessna-188-15-control-systems-cancelled/important-cases","documents":"/api/acts/ad-cessna-188-15-control-systems-cancelled/documents"}}