{"id":"F2006B04201","name":"AD/BEECH 90/10 - Standby Compass Deviation Placard - Installation","slug":"ad-beech-90-10-standby-compass-deviation-placard-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43957,"registerId":"commonwealth-F2006B04201-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 90/10 - Standby Compass Deviation Placard - Installation","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 90/10 Standby Compass Deviation Placard - Installation\n\n\n11/67\n\n \n\nApplicability: All models.\n\n \n\nRequirement: Install a warning placard near the standby compass worded as follows:\n\n \n\n“WARNING WHEN USING STANDBY COMPASS SWITCH OFF WINDSHIELD ANTI-ICE AND AIRCONDITIONER”.\n\n \n\nCompliance: Forthwith.\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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1715},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow technical scope regarding the installation of a specific safety placard on specific aircraft models to prevent compass interference. There is no evidence of scope expansion beyond the original safety intent."},"complexity_factors":["Single operative provision with no conditional logic","No defined terms or interpretation section","No cross-references to other legislative provisions beyond the enabling regulation (CAR 1998 Part 39)","Simple imperative requirement: install placard with specified text"],"plain_english_summary":"**What this directive does**\n\nThis is a mandatory safety instruction for owners and operators of **Beechcraft King Air aeroplanes** (models 90 and 65-90 series). It requires the installation of a warning label (called a \"placard\") near the standby compass — the backup magnetic navigation instrument used if the main systems fail.\n\n**The specific requirement**\nInstall a placard with this exact wording:\n> **\"WARNING WHEN USING STANDBY COMPASS SWITCH OFF WINDSHIELD ANTI-ICE AND AIRCONDITIONER\"**\n\n**Why this matters**\nElectrical currents running through the windshield anti-icing and air conditioning systems can interfere with the standby compass, causing it to display incorrect directions. If pilots don't know to switch these systems off when using the backup compass, they could receive false heading information — a serious safety risk during flight.\n\n**Who must comply**\nAll operators of affected aircraft must install this placard **immediately** (the term \"forthwith\" means without delay)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-10-standby-compass-deviation-placard-installation","history":"/api/acts/ad-beech-90-10-standby-compass-deviation-placard-installation/history","analysis":"/api/acts/ad-beech-90-10-standby-compass-deviation-placard-installation/analysis","conflicts":"/api/acts/ad-beech-90-10-standby-compass-deviation-placard-installation/conflicts","importantCases":"/api/acts/ad-beech-90-10-standby-compass-deviation-placard-installation/important-cases","documents":"/api/acts/ad-beech-90-10-standby-compass-deviation-placard-installation/documents"}}