{"id":"F2006B02404","name":"AD/AMD 50/8 - Cockpit Brake Pressure Lines","slug":"ad-amd-50-8-cockpit-brake-pressure-lines","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41647,"registerId":"commonwealth-F2006B02404-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AMD 50/8 - Cockpit Brake Pressure Lines","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)  AMD Falcon 50 and 900 Series Aeroplanes\n\n \n\nAD/AMD 50/8 Cockpit Brake Pressure Lines 13/95\n\nDM\n\n \n\nApplicability: All Falcon 900 aircraft.\n\n \n\nRequirement: Unless previously carried out action in accordance with Dassault Aviation Alert Service Bulletin F900-A29-4.\n\n \n\nCompliance: Within 50 hours time in service from 17 October 1995.\n\n \n\nBackground: The manufacturer has advised that chaffing of the cockpit LH side brake pressure lines may occur.\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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The supplied text shows the AD applies to all Falcon 900 aircraft and requires action per Dassault Aviation Alert Service Bulletin F900‑A29‑4 within 50 hours from 17 October 1995 (Applicability; Requirement; Compliance). The document provided does not indicate any change to that scope from an earlier instrument, and no information in the supplied text suggests the scope has been altered."},"complexity_factors":["Narrow applicability (only Falcon 900 aircraft) reduces scope of affected parties (Applicability).","Mandatory compliance is linked to an external document (Dassault Aviation Alert Service Bulletin F900‑A29‑4), so the AD does not itself set out technical steps or parts (Requirement).","Short fixed compliance window (50 hours from 17 October 1995) concentrates scheduling and cost pressure on operators (Compliance).","Technical nature of the corrective action (brake pressure lines) implies maintenance must be performed to manufacturer standards, which requires access to the Alert Service Bulletin and appropriate maintenance resources (Requirement; Background).","The AD text supplied does not include alternative methods of compliance, enforcement details, or cost estimates, requiring operators to seek further detail from the manufacturer or regulator (Requirement)."],"plain_english_summary":"This Airworthiness Directive applies to all Dassault Falcon 900 aeroplanes and mandates the corrective actions in Dassault Aviation Alert Service Bulletin F900‑A29‑4 to address potential chafing of the left‑hand cockpit brake pressure lines. Operators/owners must complete the bulletin’s work within 50 hours time‑in‑service from 17 October 1995 (unless already done) and bear the cost and scheduling burden of compliance."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue safety directive addressing a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original purpose of mandating a brake line inspection/repair."},"complexity_factors":["Extremely short document (under 200 words)","Only one defined term implied ('time in service' — flight hours)","Single, unambiguous requirement with clear compliance deadline","No cross-references to other legislation or complex conditional logic","Straightforward applicability (all Falcon 900 aircraft, no exceptions or sub-models to parse)"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:** It requires owners and operators of **Dassault Falcon 900 aircraft** to inspect and fix a specific safety problem: the brake pressure lines on the left-hand side of the cockpit can rub against nearby parts (\"chafing\"), which could cause brake fluid leaks and potentially brake failure.\n\n**Who must act:** Anyone who owns or operates a Falcon 900 aircraft in Australia.\n\n**What they must do:** Follow the manufacturer's instructions in **Dassault Aviation Alert Service Bulletin F900-A29-4** — this document details exactly how to inspect the lines and what repairs or replacements are needed.\n\n**When:** The work must be completed within **50 flight hours** after **17 October 1995** (unless the fix was already done earlier).\n\n**Why it matters:** Chafed brake lines can leak hydraulic fluid. If enough fluid leaks out, the brakes might not work properly — a serious safety risk during landing or taxiing. This AD ensures the problem is caught and fixed before it causes an accident."}},"importantCases":[],"_links":{"self":"/api/acts/ad-amd-50-8-cockpit-brake-pressure-lines","history":"/api/acts/ad-amd-50-8-cockpit-brake-pressure-lines/history","analysis":"/api/acts/ad-amd-50-8-cockpit-brake-pressure-lines/analysis","conflicts":"/api/acts/ad-amd-50-8-cockpit-brake-pressure-lines/conflicts","importantCases":"/api/acts/ad-amd-50-8-cockpit-brake-pressure-lines/important-cases","documents":"/api/acts/ad-amd-50-8-cockpit-brake-pressure-lines/documents"}}