{"id":"F2006B03921","name":"AD/BEECH 400/19 - Parking Brake Hydraulic Line","slug":"ad-beech-400-19-parking-brake-hydraulic-line","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43530,"registerId":"commonwealth-F2006B03921-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nBeechcraft 400 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/BEECH 400/19 Parking Brake Hydraulic ","sectionType":"part","heading":"AD/BEECH 400/19 Parking Brake Hydraulic Line 9/2001","content":"# AD/BEECH 400/19 Parking Brake Hydraulic Line 9/2001\n\nApplicability: Model 400A aeroplanes, S/Nos RK-1 through RK-264.\n\nRequirement: Inspect the parking brake hydraulic line for leakage and install an additional stand off bracket in accordance with Raytheon Service Bulletin 32-3300.\n\nNote: FAA AD 2000-25-04 refers\n\nCompliance: Unless previously accomplished, within 200 flight hours from the effective date of this Airworthiness Directive.\n\nThis Airworthiness Directive becomes effective on 6 September 2001.\n\nBackground: This Directive is prompted by advice from the manufacturer that instances of failure of the parking brake hydraulic line have occurred, resulting in sudden asymmetric braking at high speed.\n\n![Signature: Eugene Paul Holzapfel](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 26 July 2001\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 15 August 2001.","sortOrder":1}],"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":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical defect in a specific aircraft model. It has not expanded beyond its original purpose of correcting the parking brake hydraulic line failure risk."},"complexity_factors":["Single, clearly defined applicability (one aircraft model, specific serial number range)","Only two required actions (inspection + installation)","Single compliance deadline (200 flight hours)","No nested exceptions, conditional logic, or alternative compliance methods","References only one external technical document (Raytheon Service Bulletin)","Total length: approximately 200 words of substantive text"],"plain_english_summary":"Owners/operators of Beechcraft 400A (S/N RK-1 through RK-264) must inspect the parking-brake hydraulic line for leaks and install a stand‑off support bracket per Raytheon Service Bulletin 32‑3300. The action, required within 200 flight hours after 6 Sept 2001 unless already done, addresses reported hydraulic-line failures that can cause sudden uneven braking at high speed and potential loss of control."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD applies exactly to the aircraft population identified by the manufacturer (Model 400A, S/N RK‑1–RK‑264) and mandates the manufacturer‑specified corrective action (inspect and install bracket per Raytheon SB 32‑3300) within a fixed timeframe (200 flight hours). It enforces a remedial measure prompted by reported failures and does not expand requirements beyond that described condition or the referenced FAA AD."},"complexity_factors":["Narrow applicability: Model 400A aeroplanes S/N RK‑1 through RK‑264 (Applicability).","Single, discrete technical action: inspect for leakage and install an additional standoff bracket per Raytheon SB 32‑3300 (Requirement).","Clear and short compliance window: within 200 flight hours from effective date (Compliance).","Dependence on manufacturer service bulletin for method and parts increases operational reliance on third‑party instructions (Requirement).","Safety rationale is specific and event‑driven (Background), limiting scope for broad interpretation."],"plain_english_summary":"Requires owners/operators of Beechcraft Model 400A (S/N RK‑1 to RK‑264) to inspect the parking‑brake hydraulic line for leakage and fit an additional standoff bracket per Raytheon Service Bulletin 32‑3300. CASA issued the AD after manufacturer reports of hydraulic‑line failures that caused sudden asymmetric braking. The operator pays for the inspection and modification; licensed maintenance personnel must complete the work within 200 flight hours. The AD enforces compliance under CAR subregulation 39.1(1) and references FAA AD 2000‑25‑04."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-400-19-parking-brake-hydraulic-line","history":"/api/acts/ad-beech-400-19-parking-brake-hydraulic-line/history","analysis":"/api/acts/ad-beech-400-19-parking-brake-hydraulic-line/analysis","conflicts":"/api/acts/ad-beech-400-19-parking-brake-hydraulic-line/conflicts","importantCases":"/api/acts/ad-beech-400-19-parking-brake-hydraulic-line/important-cases","documents":"/api/acts/ad-beech-400-19-parking-brake-hydraulic-line/documents"}}