{"id":"F2006B02388","name":"AD/AMD 50/21 - Emergency Procedure - Rapid Depressurisation","slug":"ad-amd-50-21-emergency-procedure-rapid-depressurisation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41618,"registerId":"commonwealth-F2006B02388-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.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.","sortOrder":0},{"sectionNumber":"AD/AMD 50/21 Emergency Procedure - Rapid","sectionType":"part","heading":"AD/AMD 50/21 Emergency Procedure - Rapid Depressurisation","content":"# AD/AMD 50/21 Emergency Procedure \\- Rapid Depressurisation\n\nApplicability: All Mystère Falcon 50 and Mystère Falcon 900 aeroplanes.","sortOrder":1},{"sectionNumber":"3/2001","sectionType":"part","heading":"3/2001","content":"#   \n3/2001\n\nTX","sortOrder":2}],"analysis":{"kimi_summary":{"content_quality":"rejected","complexity_score":3,"rejection_reason":"The provided text is a fragment/header section of an Airworthiness Directive. It contains only the title, applicability statement, and introductory boilerplate. The critical substantive content — the Requirement section (what actions must be taken), the Compliance section (when they must be done), and the Background section (the safety reasoning) — is missing or truncated. The text appears corrupted with duplicate headings, page numbers ('3/2001'), and placeholder text ('TX'). Without the actual mandatory requirements and technical instructions, this cannot be meaningfully analysed as legislation.","scope_assessment":{"changed":false,"description":"This appears to be a standard, targeted Airworthiness Directive addressing a specific safety issue with specific aircraft types. There is no indication of scope creep; it maintains the typical narrow focus of ADs on particular unsafe conditions."},"complexity_factors":["Short, single-purpose directive focused on one specific safety issue","Limited applicability (only two specific aircraft models)","Standard AD structure with clear sections (Applicability, Requirement, Compliance)","No complex cross-referencing to other legislation beyond the enabling regulation (CAR 1998 subregulation 39.1(1))","Single unsafe condition addressed (rapid depressurisation emergency procedures)","However, the actual technical requirements and compliance instructions are not fully visible in this excerpt"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:**\nThis directive requires owners and operators of specific Dassault business jets (the Mystère Falcon 50 and Mystère Falcon 900) to take corrective action regarding emergency procedures for **rapid depressurisation** — a dangerous situation where an aircraft loses cabin pressure suddenly at high altitude.\n\n**Who it affects:**\n- Owners and operators of Mystère Falcon 50 and Mystère Falcon 900 aircraft\n- Maintenance organisations servicing these aircraft types\n- Pilots flying these aircraft\n\n**Why it matters:**\nRapid depressurisation can cause hypoxia (lack of oxygen), leading to impaired judgment, unconsciousness, and potentially loss of aircraft control. This AD mandates specific actions to address an identified unsafe condition in these aircraft types' emergency procedures. The directive is legally binding — compliance is mandatory under Australian aviation law (specifically the Civil Aviation Regulations 1998).\n\n**Note:** The provided text appears to be a header/introductory section only. The actual requirements (what specific actions must be taken, when they must be completed, and detailed compliance instructions) would appear in sections not fully captured here."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The supplied text shows the AD applies to all Mystère Falcon 50 and Mystère Falcon 900 aircraft and directs corrective action for an identified unsafe condition under the delegate’s power (Applicability section; subregulation 39.1(1) of CAR 1998). The supplied excerpt does not include any earlier version or an explicit statement that the applicability has been expanded or narrowed, so there is no evidence in the provided material that the scope has changed from any prior instrument. If prior AD text existed, it was not supplied and therefore cannot be used to identify a change in scope."},"complexity_factors":["Legal delegation reference to subregulation 39.1(1) of CAR 1998 creating administrative discretion for the CASA delegate","Cross-references to requirement and compliance sections that are not included in the supplied text (uncertainty about substantive obligations)","Broad applicability to all Mystère Falcon 50 and 900 aeroplanes (affects multiple operators and fleets)","Potential operational complexity from unknown technical/temporal requirements (maintenance, inspections, or procedural changes)","Interface with private maintenance markets and operator scheduling (multiple stakeholders likely involved)"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of all Mystère Falcon 50 and Falcon 900 aeroplanes to carry out delegate‑prescribed corrective action to address an identified unsafe condition. It creates a legal duty to follow the AD’s requirement and compliance instructions.\n\nPractically, operators bear the costs, scheduling and operational disruption; the CASA delegate sets the specific measures and timing. The supplied text omits those substantive details, so exact burdens and timing are unspecified here."}},"importantCases":[],"_links":{"self":"/api/acts/ad-amd-50-21-emergency-procedure-rapid-depressurisation","history":"/api/acts/ad-amd-50-21-emergency-procedure-rapid-depressurisation/history","analysis":"/api/acts/ad-amd-50-21-emergency-procedure-rapid-depressurisation/analysis","conflicts":"/api/acts/ad-amd-50-21-emergency-procedure-rapid-depressurisation/conflicts","importantCases":"/api/acts/ad-amd-50-21-emergency-procedure-rapid-depressurisation/important-cases","documents":"/api/acts/ad-amd-50-21-emergency-procedure-rapid-depressurisation/documents"}}