{"id":"F2009L00219","name":"AD/SWSA226/93 - Rudder Gust Lock - CANCELLED","slug":"ad-swsa226-93-rudder-gust-lock-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76688,"registerId":"commonwealth-F2009L00219-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Fairchild (Swearingen) SA226 and SA227 S","sectionType":"division","heading":"Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes","content":"### Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes\n\n| AD/SWSA226/93 | Rudder Gust Lock | 2/2009 |\n| ------------- | ---------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                                  |\n| ------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 12 February 2009.                                                                                                                                                                                                                                                                   |\n| Background:  | This AD placed a life limit on the gust lock assembly following the in-flight engagement of the rudder gust lock. The manufacturer has published the life limits for the gust lock assembly in Chapter 05 of the Aircraft Maintenance Manual; therefore the requirements of this AD are no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n23 December 2008","sortOrder":0},{"sectionNumber":"AD/SWSA226/93","sectionType":"part","heading":"AD/SWSA226/93","content":"## AD/SWSA226/93","sortOrder":1},{"sectionNumber":"Rudder Gust Lock","sectionType":"part","heading":"Rudder Gust Lock","content":"## Rudder Gust Lock","sortOrder":2},{"sectionNumber":"2/2009","sectionType":"part","heading":"2/2009","content":"## 2/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1793},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The instrument performs exactly the stated function of cancelling Airworthiness Directive AD/SWSA226/93. It does not expand beyond this purpose."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, cross-references, or exceptions","Minimal background section with straightforward reasoning"],"plain_english_summary":"This document **cancels a previous aviation safety rule** (called an Airworthiness Directive) that applied to Fairchild Swearingen SA226 and SA227 aircraft (Metroliner series).\n\n**What it does:**\n- Removes a mandatory life limit previously imposed on rudder gust lock assemblies (parts that prevent the rudder from moving in high winds when the aircraft is on the ground).\n- Stops requiring operators to comply with the specific safety instruction known as AD/SWSA226/93.\n\n**Why the change:**\nThe original rule was introduced after incidents where the rudder gust lock accidentally engaged during flight. It required these components to be replaced after a set number of flight hours or cycles.\n\nThis cancellation takes effect because the manufacturer now includes these same life limits in the standard Aircraft Maintenance Manual, which operators are already legally required to follow. The separate directive is therefore redundant."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-93-rudder-gust-lock-cancelled","history":"/api/acts/ad-swsa226-93-rudder-gust-lock-cancelled/history","analysis":"/api/acts/ad-swsa226-93-rudder-gust-lock-cancelled/analysis","conflicts":"/api/acts/ad-swsa226-93-rudder-gust-lock-cancelled/conflicts","importantCases":"/api/acts/ad-swsa226-93-rudder-gust-lock-cancelled/important-cases","documents":"/api/acts/ad-swsa226-93-rudder-gust-lock-cancelled/documents"}}