{"id":"F2006B04224","name":"AD/BEECH 90/33 - Magnetic Material Near Compass Flux Valve - Removal","slug":"ad-beech-90-33-magnetic-material-near-compass-flux-valve-removal","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43981,"registerId":"commonwealth-F2006B04224-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/33 - Magnetic Material Near Compass Flux Valve - Removal","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Beechcraft 90 and 65-90 (King Air) Series Aeroplanes\n\n \n\nAD/BEECH 90/33 Magnetic Material Near Compass\n\nFlux Valve - Removal\n\nApplicability: Models E90 with S/Nos. LW-1 to LW-37. Document:  Beechcraft SI No. 0605-039.\n\nCompliance: Within 200 hours’ time in service after 30 September 1974.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n\n9/74\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1348},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a specific technical airworthiness directive addressing a discrete safety issue (magnetic interference with navigation instruments) on defined aircraft models. It has not expanded beyond its original narrow safety purpose."},"complexity_factors":["Single, specific maintenance action required","Narrow applicability limited to one aircraft model variant with specific serial number range","No defined terms or interpretation sections","Single external document reference with clear compliance deadline calculation method","Minimal conditional logic or exceptions"],"plain_english_summary":"This airworthiness directive mandates the removal of magnetic materials located near the **compass flux valve** (a sensor that detects magnetic fields to help the aircraft determine direction) on specific Beechcraft aircraft.\n\n**Who it affects**\nOwners and operators of Beechcraft Model E90 aircraft with serial numbers LW-1 through LW-37.\n\n**What must be done**\nRemove any magnetic material installed near the compass flux valve, following the technical instructions in Beechcraft Service Information document No. 0605-039.\n\n**Why it matters**\nMagnetic materials near the flux valve can interfere with the aircraft's compass system, causing incorrect directional readings and potentially creating navigation hazards.\n\n**Compliance deadline**\nThe work must be completed within 200 hours of flight time after 30 September 1974."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-33-magnetic-material-near-compass-flux-valve-removal","history":"/api/acts/ad-beech-90-33-magnetic-material-near-compass-flux-valve-removal/history","analysis":"/api/acts/ad-beech-90-33-magnetic-material-near-compass-flux-valve-removal/analysis","conflicts":"/api/acts/ad-beech-90-33-magnetic-material-near-compass-flux-valve-removal/conflicts","importantCases":"/api/acts/ad-beech-90-33-magnetic-material-near-compass-flux-valve-removal/important-cases","documents":"/api/acts/ad-beech-90-33-magnetic-material-near-compass-flux-valve-removal/documents"}}