{"id":"F2006B08135","name":"AD/CESSNA 303/8 - Slick Pressurized Magnetos","slug":"ad-cessna-303-8-slick-pressurized-magnetos","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115276,"registerId":"commonwealth-F2006B08135-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 303/8 - Slick Pressurized Magnetos","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nCessna T303 Series Aeroplanes\n\nAD/CESSNA 303/8 Slick Pressurized Magnetos 4/89\n\nApplicability: All Cessna T303 aircraft fitted with Slick model 6220 or 6224 pressurized magnetos.\n\nRequirement: 1. Fabricate and install on the instrument panel in clear view of the pilot, a clearly legible placard with the following wording;\n\nPRIOR TO EACH FLIGHT, CONDUCT MAGNETO CHECKS IN ACCORDANCE WITH AFM AMENDMENT INTRODUCED BY AD/CESSNA 303/9.\n\n    2. Action in accordance with Slick SB 1-88 Paragraph III, 100 hour inspection.\n\nNote: AD/CESSNA 303/9, FAA AD 88-25-04 and Teledyne Continental Service Bulletin M88-14 also refer.\n\nCompliance: 1. Within 100 hours TIS after 20 April 1989 and concurrent with AD/CESSNA 303/9.\n\n    2.a. Within 100 hours TIS after 20 April 1989, and then at intervals not exceeding 100 hours TIS following this initial inspection.\n\n    2.b. Whenever the magnetos fail the AFM check introduced by AD/CESSNA 303/9.\n\nBackground: Slick have advised that the magneto installations on the applicable aircraft are susceptible to moisture contamination which could result in engine stoppage.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The directive's scope is consistent with its stated purpose. It applies narrowly to T303 aircraft with the named Slick pressurized magnetos and prescribes placard instruction and recurring inspections to address the moisture‑contamination risk described in the Background."},"complexity_factors":["Targeted applicability is narrow and specific: 'All Cessna T303 aircraft fitted with Slick model 6220 or 6224 pressurized magnetos.' (Applicability)","Two distinct mandatory actions: placard installation (Requirement 1) and inspections per Slick SB 1-88 Paragraph III (Requirement 2), increasing compliance steps for operators.","Recurring inspection schedule: initial 100‑hour inspection and then repeating at intervals 'not exceeding 100 hours TIS' (Compliance 2.a).","Condition‑triggered inspections: additional inspection whenever magnetos 'fail the AFM check introduced by AD/CESSNA 303/9' (Compliance 2.b), linking requirements across directives.","Concurrent timing requirement: placard and initial inspection due 'within 100 hours TIS after 20 April 1989 and concurrent with AD/CESSNA 303/9' (Compliance 1), creating coordination demands.","Cross‑references to other instruments and service bulletins (AD/CESSNA 303/9, FAA AD 88-25-04, Teledyne Continental Service Bulletin M88-14) complicate compliance tracking (Note).","Operational/compliance burden falls on aircraft operators: they must 'fabricate and install' the placard and conduct inspections (Requirement 1 & 2); costs and labour are not specified.","Specification gaps: placard must be 'clearly legible' and 'in clear view of the pilot' but fabrication standards and verification authority are not detailed (Requirement 1), creating implementation discretion."],"plain_english_summary":"This airworthiness directive requires operators of Cessna T303 aeroplanes fitted with Slick model 6220 or 6224 pressurized magnetos to install a clear cockpit placard instructing pilots to do a magneto check before each flight and to carry out a 100‑hour inspection (and repeat every 100 hours or whenever the AFM check fails). The measures respond to a reported moisture‑contamination risk that can cause engine stoppage and impose a recurring maintenance and pre‑flight check obligation on affected operators."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive maintains its original narrow scope — addressing a specific safety defect in specific magneto models on a specific aircraft type. There is no evidence of scope creep; it remains a targeted safety intervention for the identified moisture contamination issue."},"complexity_factors":["Single, specific aircraft type and component model","Only 2 main requirements (placard installation + inspection)","Clear compliance deadlines with specific hour-based triggers","Minimal cross-referencing (only 3 related documents mentioned in notes)","No nested conditional logic or exceptions","Background explanation provided in plain language","Total length: approximately 200 words"],"plain_english_summary":"This Airworthiness Directive applies to Cessna T303 aircraft fitted with Slick pressurized magnetos (models 6220 or 6224). Slick found these installations can admit moisture, risking in-flight engine stoppage.\n\nOperators must fit a visible instrument‑panel placard requiring magneto checks before every flight and carry out the manufacturer’s special inspection every 100 flight hours (and immediately if a pre‑flight check fails). The placard and first inspection were required within 100 flight hours after 20 April 1989, with inspections recurring every 100 hours thereafter."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-303-8-slick-pressurized-magnetos","history":"/api/acts/ad-cessna-303-8-slick-pressurized-magnetos/history","analysis":"/api/acts/ad-cessna-303-8-slick-pressurized-magnetos/analysis","conflicts":"/api/acts/ad-cessna-303-8-slick-pressurized-magnetos/conflicts","importantCases":"/api/acts/ad-cessna-303-8-slick-pressurized-magnetos/important-cases","documents":"/api/acts/ad-cessna-303-8-slick-pressurized-magnetos/documents"}}