{"id":"F2006B08189","name":"AD/CESSNA 320/10 Amdt 3 - Fuel System - Placards","slug":"ad-cessna-320-10-amdt-3-fuel-system-placards","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115397,"registerId":"commonwealth-F2006B08189-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 320/10 Amdt 3 - Fuel System - Placards","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 320 Series Aeroplanes\n\nAD/CESSNA 320/10\n\nAmdt 3\n\n  \nFuel System \\- Placards 1/70\n\nApplicability: All model 320 and 320-1 with S/Nos. 320-0001 to 320-0110.\n\nRequirement: 1. On all models a placard reading “Operation With Less Than Five (5) Gallons of Fuel In Each Main Tank is Prohibited”. Usable Fuel In Each Tank Is 45 Gallons\" is to be placed in full view of the pilot and as near as possible to the main fuel quantity indicator.\n\n    2. On all models a placard reading “Maintain Power Within Green Arcs During Descent” is to be placed in full view of the pilot and as near as possible to the manifold pressure gauge.\n\nNote: The operator may make and certify for the installation of the above placards. Letters of one eighth inch minimum height shall be used.\n\nor\n\n    3. Cessna SL ME69-19. Compliance: Before 1 September 1971.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is Amendment 3 of an existing Airworthiness Directive, and the scope remains tightly focused on its original purpose: requiring safety placards for fuel system and power management in specific Cessna 320 aircraft. There is no evidence of scope creep — the amendment appears to maintain the same applicability and requirements as the original directive."},"complexity_factors":["Very short document (under 200 words)","Only 2 defined applicability criteria (model numbers and serial number range)","Simple conditional structure: two mandatory placard requirements with one alternative compliance path (Cessna Service Letter ME69-19)","No cross-references to other legislation beyond the enabling regulation (Civil Aviation Regulations 1998, Part 39)","Minimal technical requirements: only specifies text content, placement location, and letter height","Single compliance deadline with no phased or conditional timelines"],"plain_english_summary":"This is an **Airworthiness Directive** — essentially a mandatory safety notice issued by Australia's aviation regulator (CASA) that requires owners of specific Cessna 320 aircraft to install warning labels (called \"placards\") in the cockpit.\n\n**What it does:**\n- Requires two specific warning labels to be installed in Cessna 320 and 320-1 aircraft (serial numbers 320-0001 through 320-0110):\n  - **Fuel warning:** A label stating that flying with less than 5 gallons of fuel in each main tank is prohibited, and confirming each tank holds 45 gallons of usable fuel. This must be placed near the fuel gauge where the pilot can clearly see it.\n  - **Power warning:** A label instructing pilots to \"Maintain Power Within Green Arcs During Descent\" — meaning keep engine power within the safe green zone on the gauge during descent. This must be placed near the manifold pressure gauge.\n\n**Who it affects:**\n- Owners and operators of early-model Cessna 320 series aircraft (specific serial numbers from 320-0001 to 320-0110).\n\n**Why it matters:**\n- **Safety critical:** Running out of fuel or mishandling engine power during descent can cause crashes. These placards serve as constant visual reminders to prevent pilot error.\n- **Compliance deadline:** The work had to be completed before 1 September 1971 (this is an old directive, though such directives typically remain in force until complied with or superseded).\n- **Flexibility:** Operators can make and certify the placards themselves — they don't need to buy official Cessna parts. Alternatively, they can follow Cessna Service Letter ME69-19 instead.\n\n**Key detail:** The lettering must be at least 1/8 inch tall so pilots can read it easily."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The instrument is titled as Amendment 3 (AD/CESSNA 320/10 Amdt 3), indicating it modifies prior material. The supplied text itself sets out the current applicability, mandatory placard texts/locations, operator certification option, an alternative (Cessna SL ME69-19), and the compliance deadline, but it does not state what prior wording or scope was. Therefore the instrument represents a change from earlier material (as indicated by the amendment label), but the supplied text does not identify the specific changes made."},"complexity_factors":["Narrow applicability by model and serial number (Applicability)","Small number of discrete prescriptive actions (two specific placards) (Requirements 1–2)","Simple technical specification for lettering (one eighth inch minimum) (Note)","Operator-certified installation option (Note) introduces a procedural step","Single alternative compliance route referenced (Cessna SL ME69-19) without further detail (Requirement 3)","Firm compliance deadline (Compliance)"],"plain_english_summary":"Applies to Cessna 320 and 320-1 aircraft S/N 320-0001–320-0110 and requires two cockpit placards: one prohibiting operation with less than five gallons in each main tank and stating usable fuel per tank, and one directing pilots to “Maintain Power Within Green Arcs During Descent.” Operators may fabricate and certify the placards (letters ≥1/8″); Cessna SL ME69-19 is an alternative compliance path. Compliance is required before 1 September 1971 and costs fall to the operator."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-320-10-amdt-3-fuel-system-placards","history":"/api/acts/ad-cessna-320-10-amdt-3-fuel-system-placards/history","analysis":"/api/acts/ad-cessna-320-10-amdt-3-fuel-system-placards/analysis","conflicts":"/api/acts/ad-cessna-320-10-amdt-3-fuel-system-placards/conflicts","importantCases":"/api/acts/ad-cessna-320-10-amdt-3-fuel-system-placards/important-cases","documents":"/api/acts/ad-cessna-320-10-amdt-3-fuel-system-placards/documents"}}