{"id":"F2006B08510","name":"AD/CF700/6 - Fuel Nozzle","slug":"ad-cf700-6-fuel-nozzle","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51236,"registerId":"commonwealth-F2006B08510-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CF700/6 - Fuel Nozzle","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 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  General Electric Turbine Engines - CF700 Series\n\n \n\nAD/CF700/6 Fuel Nozzle 9/85\n\nApplicability: All CF700 engines with fuel nozzles P/N 37D401657P104, P107 and P109. Document:               General Electric SB (CF700) 72-27 and SB (CF700) 73-28; or\n\nAD/GE-T/18.\n\n \n\nCompliance: 1. Inspect in accordance with SB (CF700) 73-27 during next hot section inspection after 30 September 1971.\n\n \n\n2. Modify in accordance with SB (CF700) 73-28 before installation in an aircraft following next reconditioning completed after 31 December 1971.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive from 1985 (as indicated by '9/85' in the title) addressing a specific technical problem with specific fuel nozzle part numbers. The scope remains tightly focused on its original safety purpose with no evidence of scope creep or expansion beyond the original fuel nozzle defect correction."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 3 defined part numbers in applicability section","Simple two-step compliance requirement with clear deadlines","No nested conditional logic or exceptions","Minimal cross-referencing (only 3 external documents: two service bulletins and one alternative AD)","Straightforward temporal triggers ('after 30 September 1971', 'after 31 December 1971')","Single subject matter (fuel nozzle inspection/modification) with no ancillary provisions"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:**\nThis directive (AD/CF700/6) requires specific inspections and modifications to **CF700 series jet engines** made by General Electric. These engines are commonly used in business jets and some military aircraft.\n\n**Who it affects:**\n- Anyone operating aircraft with CF700 engines that have specific fuel nozzle part numbers: **37D401657P104, P107, or P109**\n- Maintenance organisations that service these engines\n- Aircraft owners and operators\n\n**What must be done:**\n1. **Inspection:** Check the fuel nozzles during the next \"hot section inspection\" (a major engine overhaul that looks at the hot parts like turbines and combustors) after 30 September 1971\n2. **Modification:** Before reinstalling the engine in an aircraft after its next reconditioning (major rebuild) completed after 31 December 1971, the fuel nozzles must be modified according to General Electric's Service Bulletin 73-28\n\n**Why it matters:**\nFuel nozzles spray fuel into the engine's combustion chamber. Faulty nozzles can cause uneven burning, engine damage, power loss, or even engine failure. This AD addresses a known safety issue to prevent in-flight emergencies.\n\n**Key documents referenced:**\n- General Electric Service Bulletin (SB) CF700-72-27 (inspection procedure)\n- General Electric Service Bulletin (SB) CF700-73-28 (modification procedure)\n- Alternative compliance: AD/GE-T/18 (another airworthiness directive that achieves the same safety outcome)"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The scope remains the same as expressed in the directive: it applies only to CF700 engines with fuel nozzle P/Ns 37D401657P104, P107 and P109 and mandates an inspection at the next hot section inspection after 30 September 1971 and modification before reinstallation after reconditioning completed after 31 December 1971. The directive does not expand applicability beyond those engines/parts or add other types of corrective action."},"complexity_factors":["Narrow applicability: affects only CF700 engines fitted with three specific fuel nozzle part numbers (Applicability).","Two discrete compliance actions with clear timing rules tied to routine maintenance events (Compliance 1–2).","Dependence on external technical documents (GE service bulletins or alternate AD) for procedural detail (Document reference).","Apparent inconsistency in bulletin numbering between the document list and the compliance paragraph (possible implementation ambiguity) (Document reference; Compliance 1).","Dated calendar deadlines tied to historic maintenance cycles (1971 dates) — simple to apply but time-bound (Compliance 1–2)."],"plain_english_summary":"This airworthiness directive requires operators of General Electric CF700 engines fitted with fuel nozzles P/N 37D401657P104, P107 or P109 to inspect those nozzles at the next hot‑section inspection after 30 Sept 1971 and to apply GE’s modification before reinstalling any nozzle reconditioned after 31 Dec 1971. Work must follow the referenced GE service bulletins (or the alternate AD). It shifts inspection/modification costs and scheduling onto aircraft owners/operators and maintenance providers to address an implied safety concern."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cf700-6-fuel-nozzle","history":"/api/acts/ad-cf700-6-fuel-nozzle/history","analysis":"/api/acts/ad-cf700-6-fuel-nozzle/analysis","conflicts":"/api/acts/ad-cf700-6-fuel-nozzle/conflicts","importantCases":"/api/acts/ad-cf700-6-fuel-nozzle/important-cases","documents":"/api/acts/ad-cf700-6-fuel-nozzle/documents"}}