{"id":"F2006B03798","name":"AD/BEECH 33/31 Amdt 1 - Sponge Filled Fuel Reservoir Tanks","slug":"ad-beech-33-31-amdt-1-sponge-filled-fuel-reservoir-tanks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43394,"registerId":"commonwealth-F2006B03798-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 33/31 Amdt 1 - Sponge Filled Fuel Reservoir Tanks","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 33 and 35-33 (Debonair/Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 33/31\n\nAmdt 1\n\n\nSponge Filled Fuel Reservoir Tanks 7/86\n\n \n\nApplicability: All models as detailed in Beechcraft Mandatory Service Bulletin No. 2109. Requirement:              Action in accordance with Beechcraft Mandatory Service Bulletin No. 2109.\n\nCompliance: Inspect within 25 hours time in service after 31 July 1985 and thereafter as directed in the “Compliance” section of S.B. 2109.\n\n \n\nBackground: This Amendment to AD/BEECH 33/31 effectively changes the Requirement Document from Beechcraft Safety Communique No. 67 to Mandatory Service Bulletin No 2109. Beech now have improved reservoir foam inserts available and SB 2109 calls up these new parts.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2243},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"Technical amendment updates the incorporated document from Safety Communique No. 67 to Mandatory Service Bulletin No. 2109 to allow use of improved foam insert parts, but maintains the original safety objective regarding fuel reservoir tank maintenance."},"complexity_factors":["Single, straightforward requirement referencing an external technical standard","Reliance on Beechcraft Mandatory Service Bulletin No. 2109 without reproducing its detailed instructions in the directive","Aviation-specific compliance metric ('hours time in service' rather than simple calendar dates)"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Beechcraft Debonair and Bonanza (models 33 and 35‑33) to inspect and maintain sponge-filled fuel reservoir tank inserts to prevent fuel starvation. An initial check is required within 25 flight hours after 31 July 1985, further work must follow Beechcraft Mandatory Service Bulletin No. 2109, and installation of newer, improved foam inserts is permitted."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-33-31-amdt-1-sponge-filled-fuel-reservoir-tanks","history":"/api/acts/ad-beech-33-31-amdt-1-sponge-filled-fuel-reservoir-tanks/history","analysis":"/api/acts/ad-beech-33-31-amdt-1-sponge-filled-fuel-reservoir-tanks/analysis","conflicts":"/api/acts/ad-beech-33-31-amdt-1-sponge-filled-fuel-reservoir-tanks/conflicts","importantCases":"/api/acts/ad-beech-33-31-amdt-1-sponge-filled-fuel-reservoir-tanks/important-cases","documents":"/api/acts/ad-beech-33-31-amdt-1-sponge-filled-fuel-reservoir-tanks/documents"}}