{"id":"F2008L00162","name":"AD/CESSNA 210/13 - Control Systems - Modification - CANCELLED","slug":"ad-cessna-210-13-control-systems-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":72326,"registerId":"commonwealth-F2008L00162-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 210 Series Aeroplanes","sectionType":"division","heading":"Cessna 210 Series Aeroplanes","content":"### Cessna 210 Series Aeroplanes\n\n| AD/CESSNA 210/13 | Control Systems - Modification | 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 210/13","sectionType":"part","heading":"AD/CESSNA 210/13","content":"## AD/CESSNA 210/13","sortOrder":1},{"sectionNumber":"Control Systems - Modification","sectionType":"part","heading":"Control Systems - Modification","content":"## Control Systems - Modification","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":1154},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument performs exactly one function: cancelling the previous Airworthiness Directive. It does not expand, restrict, or alter the scope beyond terminating the 1970 requirement."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretation section","No conditional logic or exceptions","Straightforward revocation of a previous instrument with no transitional arrangements"],"plain_english_summary":"This document **cancels an old aircraft safety rule** that has been in place since 1970.\n\n**What it does**\n- Withdraws Airworthiness Directive (AD) number 13 for Cessna 210 series aeroplanes\n- Removes the legal requirement for owners and operators to check for and replace specific faulty lock nuts on control systems\n\n**Who it affects**\n- Owners and operators of Cessna 210 series aircraft\n- Maintenance organisations working on these planes\n\n**Why it matters**\nThe original 1970 directive required a one-time replacement of certain **NAS 679 lock nuts** (fasteners used in the aircraft's control systems) that were manufactured with a defect in 1969. After 38 years, aviation regulators determined every affected nut has already been replaced, so the unsafe condition no longer exists. This cancellation officially removes the compliance burden while confirming the fleet is safe."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-13-control-systems-modification-cancelled","history":"/api/acts/ad-cessna-210-13-control-systems-modification-cancelled/history","analysis":"/api/acts/ad-cessna-210-13-control-systems-modification-cancelled/analysis","conflicts":"/api/acts/ad-cessna-210-13-control-systems-modification-cancelled/conflicts","importantCases":"/api/acts/ad-cessna-210-13-control-systems-modification-cancelled/important-cases","documents":"/api/acts/ad-cessna-210-13-control-systems-modification-cancelled/documents"}}