{"id":"F2006B04056","name":"AD/BEECH 56/25 Amdt 2 - Fuel Boost Pumps","slug":"ad-beech-56-25-amdt-2-fuel-boost-pumps","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43681,"registerId":"commonwealth-F2006B04056-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 56/25 Amdt 2 - Fuel Boost Pumps","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)  \nBeechcraft 56TC (Turbo Baron) Series Aeroplanes\n\nAD/BEECH 56/25\n\nAmdt 2\n\n  \nFuel Boost Pumps 9/86\n\nApplicability: All model 56TC with replacement fuel boost pumps (Beech P/Nos. 50-380177-5, 50- 380177-7, 50-389041-9 and 60-389010-15) which are date coded 1k through 5k or with a repair station nameplate dated 1-83 through 5-83.\n\nRequirement: Beechcraft SB No. 2156.\n\n    Carry out initial inspection in accordance with Step 1 and Modify in accordance with Steps 3 and 4 of the Requirement Document.\n\n    2. Replace leaking boost pumps in accordance with Step 2 of the Requirement Document.\n\n    3. Affected pumps held as spares; inspect in accordance with the Requirement Document.\n\nCompliance: 1. Within 100 hours’ time in service after 30 September 1986 or before 31 March 1987 whichever occurs first.\n\n    2. Before further flight after initial inspection.\n\n    3. Before installation in an aircraft after 30 September 1986.\n\nNote: Compliance with previous issues of this Directive does not constitute compliance with this issue and a further certification is required.\n\nBackground: This Directive has been amended to reflect the manufacturer’s latest Service Bulletin and place a time limit for modification of fuel boost pumps.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2250},"content_quality":"ok","complexity_score":5,"scope_assessment":{"changed":false,"description":"This amendment remains focused on the original safety purpose: addressing potential defects in specific fuel boost pumps installed in Beechcraft 56TC aircraft. While it updates the technical requirements to reference the latest manufacturer Service Bulletin and imposes stricter time limits for modification, it does not expand beyond the original scope of aviation safety regulation for this specific aircraft equipment."},"complexity_factors":["Requires cross-reference to external technical document (Beechcraft Service Bulletin No. 2156) without reproducing the procedural steps","Technical applicability criteria using manufacturer part numbers (4 specific P/Nos) and alphanumeric date code ranges (1k-5k, 1-83 through 5-83)","Multiple compliance deadlines with conditional logic ('whichever occurs first')","Different treatment for installed pumps versus spare parts held in inventory","Requires technical aviation knowledge to interpret 'time in service' versus calendar time"],"plain_english_summary":"This airworthiness directive applies to Beechcraft Model 56TC aircraft fitted with certain replacement fuel boost pumps (Beech P/N 50-380177-5/-7, 50-389041-9, 60-389010-15) manufactured or repaired Jan–May 1983. It requires inspection and modification per Beech Service Bulletin No. 2156, immediate replacement of any leaking pump before flight, and checking spares before installation.\n\nInspections/modifications are due within 100 flight hours after 30 Sep 1986 or by 31 Mar 1987, whichever is first; prior compliance does not exempt you from this version and re-certification is required."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-56-25-amdt-2-fuel-boost-pumps","history":"/api/acts/ad-beech-56-25-amdt-2-fuel-boost-pumps/history","analysis":"/api/acts/ad-beech-56-25-amdt-2-fuel-boost-pumps/analysis","conflicts":"/api/acts/ad-beech-56-25-amdt-2-fuel-boost-pumps/conflicts","importantCases":"/api/acts/ad-beech-56-25-amdt-2-fuel-boost-pumps/important-cases","documents":"/api/acts/ad-beech-56-25-amdt-2-fuel-boost-pumps/documents"}}