{"id":"F2006B03873","name":"AD/BEECH 36/16 - Fuel System Placards","slug":"ad-beech-36-16-fuel-system-placards","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43482,"registerId":"commonwealth-F2006B03873-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 36/16 - Fuel System Placards","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 36 (Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 36/16 Fuel System Placards 7/73\n\nApplicability: Models 36 and A36 with S/Nos. E-1, E-310.\n\n \n\nRequirement: Action in accordance with Beechcraft SI 0491-281 or 0493-281 as applicable. Tank inspections are to be performed on all aircraft with baffled fuel cells unless previously inspected in accordance with AD/BEECH 36/6.\n\n \n\nCompliance: Within 100 hours time in service after 31 July 1973.\n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive, as written, applies only to the specified serial-number range of Model 36/A36 aeroplanes and to baffled fuel cells, and it explicitly excludes tanks already inspected under AD/BEECH 36/6. The instrument adds a specific requirement to follow the named Beechcraft service instructions and sets a fixed compliance window, but it does not broaden the population subject to inspection beyond the stated applicability."},"complexity_factors":["Narrow applicability: limited to Model 36 and A36 with serial numbers E-1 to E-310 (Applicability).","Reliance on external technical documents: actions must follow Beechcraft SI 0491-281 or 0493-281 (Requirement).","Reference to prior directive for exclusion: tanks previously inspected under AD/BEECH 36/6 are excluded (Requirement).","Time-limited compliance window: within 100 hours TIS after 31 July 1973 (Compliance).","Technical work requires qualified maintenance personnel; directive does not detail inspection steps (Requirement)."],"plain_english_summary":"This airworthiness directive requires owners/operators of Beechcraft Model 36/A36 serials E-1 through E-310 to fit placards and inspect fuel tanks (baffled fuel cells) per Beechcraft service instructions SI 0491-281 or SI 0493-281. Tanks already inspected under AD/BEECH 36/6 are excluded. Compliance is mandatory within 100 hours time in service after 31 July 1973; operators bear the cost and must follow the manufacturer’s procedures."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive from 1973 with a narrow scope (specific serial numbers, specific placard installation). It has not expanded beyond its original purpose."},"complexity_factors":["Very short document (under 200 words)","Only 2 defined applicability criteria (model numbers and serial numbers)","Single cross-reference to prior directive (AD/BEECH 36/6) for exemption purposes","No nested conditional logic — straightforward 'unless previously inspected' exception","References external technical documents (Service Instructions) rather than embedding detailed procedures"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it like a compulsory recall notice for aircraft.\n\n**What it does:** It requires owners of specific Beechcraft Bonanza aeroplanes (Models 36 and A36 with serial numbers E-1 and E-310) to install new **fuel system placards** — warning labels or signs inside the aircraft that alert pilots to specific fuel system characteristics or limitations.\n\n**Who must act:** Owners and operators of these specific Beechcraft 36 series aircraft.\n\n**What they must do:** Follow the instructions in two specific Beechcraft Service Instructions (SI 0491-281 or 0493-281, depending on which applies to their aircraft). Additionally, they must inspect the fuel tanks on all aircraft with **baffled fuel cells** (internal structures that reduce fuel sloshing) — unless the tanks were already inspected under a previous directive (AD/BEECH 36/6).\n\n**When:** The work must be completed within **100 hours of flight time** after 31 July 1973.\n\n**Why it matters:** Fuel system placards prevent pilots from making dangerous mistakes — like selecting the wrong fuel tank or misunderstanding fuel flow limitations — which can lead to engine failure. The tank inspections ensure the internal baffles haven't degraded, which could cause fuel starvation even when tanks appear full."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-36-16-fuel-system-placards","history":"/api/acts/ad-beech-36-16-fuel-system-placards/history","analysis":"/api/acts/ad-beech-36-16-fuel-system-placards/analysis","conflicts":"/api/acts/ad-beech-36-16-fuel-system-placards/conflicts","importantCases":"/api/acts/ad-beech-36-16-fuel-system-placards/important-cases","documents":"/api/acts/ad-beech-36-16-fuel-system-placards/documents"}}