{"id":"F2006B09530","name":"AD/EMY/12 - Beaufort Operating Mechanism C.1855 (P/N ME 48) - Inspection and Modification","slug":"ad-emy-12-beaufort-operating-mechanism-c-1855-p-n-me-48-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54141,"registerId":"commonwealth-F2006B09530-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/EMY/12 - Beaufort Operating Mechanism C.1855 (P/N ME 48) - Inspection and Modification","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 - 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Emergency Equipment\n\n \n\nAD/EMY/12 Beaufort Operating Mechanism C.1855\n\n(P/N ME 48) - Inspection and Modification\n\nApplicability: Civil Aviation all Lifejackets (Reversible) MK.7D. Civil Aviation Lifejackets (Reversible) MK.5D. Civil Aviation Lifejackets (Reversible) MK.11E. Civil Aviation Lifejackets (Reversible) MK.11F.\n\nCivil Aviation Lifejackets (Reversible) Child MK.2D. Civil Aviation Lifejackets (Reversible) Child MK.1D. Baby's Floating Cot MK.3D.\n\nDocument: Beaufort SB No. 035. Compliance:  Before 30 June 1978.\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\n6/77\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive focused on a specific mechanical component in specific lifejacket models. It has not expanded beyond its original technical scope."},"complexity_factors":["Very short document (approximately 150 words)","Only 1 defined reference (Beaufort SB No. 035)","Simple applicability list (7 specific product models)","Single compliance deadline with no conditional exceptions","No cross-references to other legislation or regulations beyond the enabling Civil Aviation Regulations 1998","Straightforward command structure: identify if you have affected equipment, follow the service bulletin, complete by deadline"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998. It mandates a specific safety inspection and modification for certain lifejackets and baby flotation devices used in civil aviation.\n\n**What it does:**\n- Requires operators to inspect and modify the \"Beaufort Operating Mechanism C.1855 (Part Number ME 48)\" on specific lifejacket models\n- This mechanism is a component that helps deploy or operate the lifejacket in an emergency\n\n**Who it affects:**\n- Owners and operators of aircraft carrying these specific lifejacket models:\n  - Lifejackets MK.7D, MK.5D, MK.11E, MK.11F (reversible adult models)\n  - Lifejackets Child MK.2D and MK.1D (reversible child models)\n  - Baby's Floating Cot MK.3D (infant flotation device)\n\n**What must be done:**\n- Follow the instructions in \"Beaufort Service Bulletin No. 035\" (a manufacturer's technical notice)\n- Complete the work before **30 June 1978**\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety orders. They address defects or unsafe conditions found in aircraft equipment. Non-compliance can ground an aircraft or result in penalties. This particular AD addresses a potential fault in lifejacket operating mechanisms that could fail during an emergency water landing, putting passengers and crew at risk."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument's scope as presented in the text remains consistent with its original statement: it applies to the specific model lifejackets and the Baby's Floating Cot MK.3D listed under \"Applicability\" and requires inspection/modification per Beaufort SB No. 035 before 30 June 1978 (source: \"Applicability\", \"Document\", \"Compliance\"). There is no indication in the provided text that the scope was broadened, narrowed, or otherwise altered from the instrument's stated requirements."},"complexity_factors":["Short, focused directive with a single clear action (inspection and modification) and a single compliance deadline (source: \"Compliance: Before 30 June 1978\").","Scope limited to a small, enumerated set of equipment (explicit list under \"Applicability\").","Technical detail is outsourced to an external document (Beaufort SB No. 035), so understanding the exact technical requirements requires consulting that bulletin (source: \"Document: Beaufort SB No. 035\").","No procedural or enforcement detail in the AD text itself (no carrying-out party, no penalty, no reporting requirements), reducing statutory complexity but increasing operational ambiguity for implementers.","Historical compliance date (1978) makes the directive time-limited in the text and may affect relevance but does not add legal complexity in itself (source: \"Compliance\")."],"plain_english_summary":"What this instrument does\n\n- This airworthiness directive (AD) requires inspection and modification of a specific operating mechanism (Beaufort Operating Mechanism C.1855, part number ME 48) fitted to a set of civil aviation lifejackets and a baby floating cot. The required procedures are those set out in Beaufort Service Bulletin No. 035 (\"Beaufort SB No. 035\").\n\nWho it affects\n\n- The AD applies to the listed Civil Aviation lifejackets and the Baby's Floating Cot MK.3D named under the \"Applicability\" heading: Lifejackets (Reversible) MK.7D, MK.5D, MK.11E, MK.11F and Child MK.2D, MK.1D, and Baby's Floating Cot MK.3D (source: \"Applicability\").\n\nWhat it requires, mechanically\n\n- Owners/operators of the affected equipment must have the Beaufort Operating Mechanism inspected and modified in accordance with Beaufort SB No. 035 (source: \"Document: Beaufort SB No. 035\").\n- The work had to be completed by the compliance date given: on or before 30 June 1978 (source: \"Compliance: Before 30 June 1978\").\n\nWho decides and how it is enforced\n\n- The directive appears under the Civil Aviation Safety Authority schedule of airworthiness directives and is issued under the Civil Aviation Regulations framework (source: header). The AD itself sets the mandatory action and the compliance deadline.\n\nPractical implications, costs and incentives\n\n- Who pays: The text does not state funding or reimbursement. Mechanically, the owners/operators of the listed lifejackets and cot bear the direct cost and responsibility to arrange the inspection and modification because the AD prescribes actions for those items (source: \"Applicability\"; \"Compliance\").\n- What must be done: Inspections and modifications must follow Beaufort SB No. 035. The AD delegates the technical details to that service bulletin rather than setting them out itself (source: \"Document: Beaufort SB No. 035\").\n- Compliance burden: Owners/operators need access to Beaufort SB No. 035, the necessary parts/tools/skills to perform the modification, and time to complete the work before the deadline (source: \"Document\"; \"Compliance\").\n- Administrative/implementation risk: The AD depends on an external technical document (Beaufort SB No. 035). If operators do not have ready access to that bulletin, or if the bulletin requires specialist facilities, this increases practical compliance complexity (source: \"Document: Beaufort SB No. 035\").\n\nWhat the instrument does not say (from the text)\n\n- The AD text does not state the technical reason or safety rationale for the inspection/modification, nor does it specify who carries out the work (e.g. manufacturer, authorised workshop, or owner) or any cost recovery/compensation arrangements (source: entire text).\n\nNet effect summarized\n\n- The AD requires owners/operators of the listed lifejackets and the baby floating cot to have the Beaufort Operating Mechanism inspected and modified in accordance with Beaufort SB No. 035 by 30 June 1978. The technical steps and standards are in the referenced service bulletin; the financial and logistical responsibility for compliance rests with the parties who hold or operate the affected equipment (source: \"Applicability\", \"Document\", \"Compliance\")."}},"importantCases":[],"_links":{"self":"/api/acts/ad-emy-12-beaufort-operating-mechanism-c-1855-p-n-me-48-inspection-and-modification","history":"/api/acts/ad-emy-12-beaufort-operating-mechanism-c-1855-p-n-me-48-inspection-and-modification/history","analysis":"/api/acts/ad-emy-12-beaufort-operating-mechanism-c-1855-p-n-me-48-inspection-and-modification/analysis","conflicts":"/api/acts/ad-emy-12-beaufort-operating-mechanism-c-1855-p-n-me-48-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-emy-12-beaufort-operating-mechanism-c-1855-p-n-me-48-inspection-and-modification/important-cases","documents":"/api/acts/ad-emy-12-beaufort-operating-mechanism-c-1855-p-n-me-48-inspection-and-modification/documents"}}