{"id":"F2006B03834","name":"AD/BEECH 35/36 - Fuel Selector Valve Disengagement Warning Light","slug":"ad-beech-35-36-fuel-selector-valve-disengagement-warning-light","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43436,"registerId":"commonwealth-F2006B03834-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 35/36 - Fuel Selector Valve Disengagement Warning Light","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 35 (Bonanza) Series Aeroplanes\n\n \n\n# AD/BEECH 35/36 Fuel Selector Valve Disengagement\n\nWarning Light\n\nApplicability: Models 35, A35, B35 & C35 with S/Nos. D-1 to D-2900 fitted with fuel unit\n\n# 10/72\n\nassembly P/N 35-924065 modified by the installation of Beech Kit No. 35-5030S.\n\n \n\nNote: Beech Kit No. 35-5030S is one method of complying with AD/BEECH 35/26.\n\n \n\nRequirement: 1. Ensure that the lens assembly of the fuel selector valve disengagement warning light is placed into its MAXIMUM brilliance position. This may be performed by the pilot without the necessity for certification.\n\n \n\n2. Replace the fuel selector valve disengagement warning light assembly MS 25041- 2, with a non-dimming light assembly such as MS 25041-6 or equivalent.\n\n \n\nCompliance: For Para. 1 - Prior to each flight until incorporation of Para 2.\n\n \n\nFor Para. 2 - Within 100 hours time in service after 3 October 1972.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific technical defect in specific aircraft. It has not expanded beyond its original purpose of mandating a warning light modification."},"complexity_factors":["Very short document (under 300 words)","Only 2 substantive requirements with clear compliance deadlines","Single applicability criterion with specific model numbers and serial number range","One cross-reference to related directive AD/BEECH 35/26 in explanatory note only","No nested conditions or exceptions","Plain language requirements ('Ensure that', 'Replace') without technical legal drafting"],"plain_english_summary":"This CASA Airworthiness Directive targets certain Beechcraft Bonanza 35-series aircraft with a specific fuel-system modification. It requires pilots to set the fuel-selector-disengagement warning light to maximum brightness before every flight and, within 100 hours from 3 Oct 1972, to replace the dimmable lamp with a non-dimming unit.  \n\nIt affects owners/operators of the specified Bonanzas and prevents missed fuel-selector warnings that could lead to fuel starvation and engine failure."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive preserves the original corrective scope: immediate operational mitigation plus mandated hardware replacement for the listed aircraft. It does not expand affected models, add new obligations beyond the pilot/owner-operator split, or alter the nature of the remedy."},"complexity_factors":["Narrow applicability: specific models and serial numbers (Models 35, A35, B35 & C35; S/N D-1 to D-2900).","Two-tier compliance: temporary pilot action (Para.1) plus mandatory hardware replacement within a set service-time (Para.2).","Parts identification and equivalence requirement (replace MS25041-2 with MS25041-6 or equivalent) creates procurement/approval tasks.","Fixed compliance deadline measured in operating hours (100 hours TIS after 3 October 1972) requires tracking of flight hours.","Split of responsibility: pilot may perform temporary adjustment without certification, while replacement requires maintenance action/certification."],"plain_english_summary":"Requires owners/operators of Beechcraft 35-series aeroplanes fitted with Beech Kit 35-5030S to apply a two-step fix for the fuel-selector disengagement warning light: pilots must set the lens to its maximum-brilliance position before each flight until the lamp is replaced (Para.1); the light assembly must be replaced with a non-dimming unit within 100 hours TIS after 3 October 1972 (Para.2). Operators pay for parts and labour; the rule changes pre-flight checks and maintenance scheduling."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-35-36-fuel-selector-valve-disengagement-warning-light","history":"/api/acts/ad-beech-35-36-fuel-selector-valve-disengagement-warning-light/history","analysis":"/api/acts/ad-beech-35-36-fuel-selector-valve-disengagement-warning-light/analysis","conflicts":"/api/acts/ad-beech-35-36-fuel-selector-valve-disengagement-warning-light/conflicts","importantCases":"/api/acts/ad-beech-35-36-fuel-selector-valve-disengagement-warning-light/important-cases","documents":"/api/acts/ad-beech-35-36-fuel-selector-valve-disengagement-warning-light/documents"}}