{"id":"F2006B03491","name":"AD/BAe 146/40 Amdt 2 - Nose Landing Gear Upper Main Fitting","slug":"ad-bae-146-40-amdt-2-nose-landing-gear-upper-main-fitting","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43045,"registerId":"commonwealth-F2006B03491-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BAe 146/40 Amdt 2 - Nose Landing Gear Upper Main Fitting","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)  \nBritish Aerospace BAe 146 Series Aeroplanes\n\nAD/BAe146/40\n\nAmdt 2\n\n  \nNose Landing Gear Upper Main Fitting 2/96\n\nApplicability: All aircraft fitted with nose landing gear P/N 200876001/002/003/004 or 201138002.\n\nRequirement: Inspect the nose landing gear for fatigue cracks using a high frequency eddy current method in accordance with British Aerospace BAe 146 Inspection Service Bulletin No 32-131 Revision 3.\n\nCompliance: 1. Inspect nose landing gear P/N 200876001 and 200876003 before exceeding 4000 landings or before 400 landings after 1 February 1996, whichever occurs later.\n\nRe-inspect at intervals not to exceed 2000 landings.\n\n2. Inspect nose landing gear P/N 200876002, 200876004 and 201138002 before exceeding 16000 landings. Re-inspect at intervals not to exceed 8000 landings.\n\nThe effective date of this amendment is 1 February 1996.\n\nBackground: This Directive was originally raised in response to reports of cracking on two early modification standard nose landing gear assemblies. The initial issue required a once- off inspection to gather data which would assist the manufacturer in the development of future control action. As a result of the inspection data, the manufacturer has introduced a requirement for repetitive inspections. Amendment 1 incorporated repetitive inspections and introduced RJ series aircraft.\n\nAmendment 2 is raised to reflect the latest revision status of the Requirement Document. This reduces the inspection interval of early modification standard nose landing gear assemblies. There is no change to inspections of later standard nose landing gear assemblies.","sortOrder":0}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment stays within the original safety purpose of the directive. Amendment 2 merely updates the technical reference document and tightens inspection intervals for older gear based on accumulated data. There is no expansion into new aircraft types, new systems, or new regulatory domains beyond the original nose landing gear inspection mandate."},"complexity_factors":["Short, single-purpose document (approximately 250 words)","Only 5 defined part numbers to identify applicability","Two distinct compliance pathways based on part number, with clear numerical thresholds","No nested exceptions or conditional logic — straightforward 'if X, then Y' structure","Single cross-reference to external technical document (British Aerospace Service Bulletin No 32-131 Revision 3)","Minimal legislative machinery — no interpretation sections, penalty clauses, or administrative procedures"],"plain_english_summary":"This CASA Airworthiness Directive mandates high-frequency eddy-current inspections of the BAe 146 nose landing gear fitted with certain part numbers, requiring operators to start and repeat inspections on a part-dependent schedule. It affects airlines, cargo operators and private owners of affected aircraft and was issued after fatigue cracks were found; compliance is mandatory to prevent landing-gear failure and grounding."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 2 did not expand applicability but changed compliance scope by reducing inspection intervals for early-modification nose landing gear assemblies (affecting P/N 200876001 and 200876003) while leaving later-standard assemblies' inspections unchanged; effective date is 1 February 1996."},"complexity_factors":["Multiple specific part numbers with different compliance schedules (P/N 200876001/002/003/004 and 201138002).","Different initial and repetitive landing-count thresholds (early-mod parts: initial ≤4,000 landings or ≤400 landings after 1 Feb 1996; repeat ≤2,000; later parts: initial ≤16,000; repeat ≤8,000).","Mandated inspection technique: high-frequency eddy current in accordance with BAe Inspection Service Bulletin No 32-131 Revision 3 (technical equipment and trained personnel required).","Operators must maintain and use accurate landing-count records to determine compliance timing.","Amendment changes inspection intervals (reduces interval for early-mod assemblies), increasing inspection frequency and operational scheduling burden.","Clear, prescriptive requirements with little regulatory discretion but operational implementation and logistical coordination required."],"plain_english_summary":"Requires high-frequency eddy-current inspections of specified BAe 146 nose landing gear part numbers, following British Aerospace Inspection Service Bulletin No 32-131 Rev 3. Operators must perform initial and recurring inspections at landing-count thresholds that differ by part number—Amendment 2 shortens intervals for early-modification assemblies—to detect fatigue cracks reported earlier. Operators bear inspection costs and must track landing counts; the directive takes effect 1 February 1996."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bae-146-40-amdt-2-nose-landing-gear-upper-main-fitting","history":"/api/acts/ad-bae-146-40-amdt-2-nose-landing-gear-upper-main-fitting/history","analysis":"/api/acts/ad-bae-146-40-amdt-2-nose-landing-gear-upper-main-fitting/analysis","conflicts":"/api/acts/ad-bae-146-40-amdt-2-nose-landing-gear-upper-main-fitting/conflicts","importantCases":"/api/acts/ad-bae-146-40-amdt-2-nose-landing-gear-upper-main-fitting/important-cases","documents":"/api/acts/ad-bae-146-40-amdt-2-nose-landing-gear-upper-main-fitting/documents"}}