{"id":"F2006B09286","name":"AD/DIAMOND/2 - Fuel Pump Hose Replacement","slug":"ad-diamond-2-fuel-pump-hose-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53348,"registerId":"commonwealth-F2006B09286-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DIAMOND/2 - Fuel Pump Hose Replacement","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)  \nDiamond (HOAC) Series Aeroplanes\n\nAD/DIAMOND/2 Fuel Pump Hose Replacement 5/98 DM\n\nApplicability: Diamond aircraft model DA20-A1 “Katana” aircraft serial numbers 10002 to 10318 equipped with Rotax 912 F3 engines and DA20-A1 aircraft equipped with Rotax 912 A3 engines, which have Diamond aircraft service bulletin DA20-73-03 Rev 0 incorporated (conversion to low lead fuels).\n\nRequirement: Replace existing fuel pump supply hose part number (P/N) 160B01BXXC0360 with fuel pump supply hose P/N 20-7310-20-01 in accordance with Diamond Alert Service Bulletins DA20-73-04, Rev 1 dated February 5, 1998 and DA20-73-03, Rev 1, dated\n\nFebruary 5, 1998.\n\nNote: Transport Canada Emergency Airworthiness Directive CF-98-02 dated 25 February 1998 refers.\n\nCompliance: Within 30 flight hours of the effective date of this directive or before 4 April 1998, whichever comes first.\n\nThis directive becomes effective on 4 March 1998.\n\nBackground: Several incidences of blockage of the fuel pump supply hose have occurred and been attributed to swelling of the inner wall of the hose. Investigation has shown that a defect may have occurred in manufacture of the hose which gives rise to this failure. This directive removes the suspect part and replaces it with a known serviceable item of different origin.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive aligns with its stated purpose: remove the suspect hose P/N 160B01BXXC0360 and install P/N 20‑7310‑20‑01 on the listed DA20‑A1 serials. It imposes a one‑off replacement within a fixed timeframe and does not extend obligations beyond that replacement (see Requirement; Applicability; Compliance)."},"complexity_factors":["Narrow and specific applicability to defined serial numbers and engine/configuration (Applicability).","Single, mandatory action: replace one identified part with a specified replacement (Requirement).","Short compliance window creates scheduling and downtime pressure (Compliance: within 30 flight hours or by 4 April 1998).","Reliance on manufacturer Alert Service Bulletins for procedural detail increases dependence on external documents (Requirement references DA20‑73‑04 and DA20‑73‑03).","Need to identify, obtain and fit the precise replacement part may impose supply/logistics costs on operators (Requirement/Background).","Regulatory origin and cross‑reference to Transport Canada AD may require recordkeeping and proof of compliance (Note)."],"plain_english_summary":"This airworthiness directive requires owners/operators of Diamond DA20‑A1 “Katana” aeroplanes (serials 10002–10318) with Rotax 912 F3, or DA20‑A1s converted to low‑lead fuel with Rotax 912 A3, to replace fuel pump supply hose P/N 160B01BXXC0360 with P/N 20‑7310‑20‑01 because swelling of the hose inner wall has caused blockages. \n\nCompliance is mandatory within 30 flight hours or by 4 April 1998, following Diamond Alert Service Bulletins DA20‑73‑04 Rev 1 and DA20‑73‑03 Rev 1; operators must schedule the maintenance and source the replacement, bearing the direct costs."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific manufacturing defect in a specific aircraft component. It has not expanded beyond its original purpose of mandating hose replacement for affected aircraft."},"complexity_factors":["Very short document (under 300 words)","Only 2 defined part numbers referenced","Single, clear compliance action (hose replacement)","Simple applicability test (specific serial numbers + engine type + prior modification)","No nested exceptions or conditional logic","Straightforward deadline calculation (30 flight hours OR calendar date)","No cross-references to other legislation beyond the enabling regulations (CAR 1998 Part 39)"],"plain_english_summary":"This CASA Airworthiness Directive mandates that owners/operators of Diamond DA20-A1 \"Katana\" aircraft (s/n 10002–10318) modified for low‑lead fuel and fitted with Rotax 912 A3/F3 engines replace a defective fuel pump hose (part no. 160B01BXXC0360) to prevent inner‑wall swelling and fuel blockage. Replacement with P/N 20‑7310‑20‑01 per Diamond's service bulletin is required within 30 flight hours or by 4 April 1998 (AD effective 4 March 1998)."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-diamond-2-fuel-pump-hose-replacement","history":"/api/acts/ad-diamond-2-fuel-pump-hose-replacement/history","analysis":"/api/acts/ad-diamond-2-fuel-pump-hose-replacement/analysis","conflicts":"/api/acts/ad-diamond-2-fuel-pump-hose-replacement/conflicts","importantCases":"/api/acts/ad-diamond-2-fuel-pump-hose-replacement/important-cases","documents":"/api/acts/ad-diamond-2-fuel-pump-hose-replacement/documents"}}