{"id":"F2017L01466","name":"CASA 92/17 - Determination – Civil Aviation Order 100.5 – non-application of fuel quantity gauge calibration requirements","slug":"casa-92-17-determination-civil-aviation-order-100-5-non-application-of-fuel-quantity-gauge-calibrati","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":144259,"registerId":"commonwealth-F2017L01466-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA 92/17 - Determination – Civil Aviation Order 100.5 – non-application of fuel quantity gauge calibration requirements","content":"Instrument number CASA 92/17\n\nI, shane patrick carmody, Director of Aviation Safety, on behalf of CASA, make this instrument under paragraph 1.2 of the Civil Aviation Order 100.5 (General requirements in respect of maintenance of Australian aircraft) 2011.\n\n\\[Signed S. Carmody\\]\n\nShane Carmody  \nDirector of Aviation Safety\n\n9 November 2017\n\nDetermination – Civil Aviation Order 100.5 – non-application of fuel quantity gauge calibration requirements\n\n1 Duration\n\nThis instrument:\n\n(a) commences on the day after registration; and\n\n(b) is repealed at the end of 31 October 2020.\n\n2 Determination\n\n(1)I determine that clause 6 of Appendix 1 to Civil Aviation Order 100.5 (General requirements in respect of maintenance of Australian aircraft) 2011 does not apply to a class A aircraft the approved system of maintenance for which incorporates a manufacturer’s MSG maintenance program.\n\n(2) In subsection (1), manufacturer’s MSG maintenance program, for an aircraft, means the aircraft manufacturer’s program for the management of continuing airworthiness of the aircraft that:\n\n(a) requires the carrying out of maintenance that was developed using the specification, known as “ATA MSG-2” or “ATA MSG-3”’, as the specification existed at the time the maintenance program was approved; and\n\n(b) is approved by a national aviation authority that issued a type certificate for the aircraft.\n\n> Note 1 ATA MSG-2 and ATA MSG-3 are specifications presently published by the organisation known as Airlines for America, formerly known as the Air Transport Association of America (ATA).\n\n> Note 2 The term national aviation authority is defined in CASR by reference to a foreign country.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1783},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument maintains a narrow, technical scope as intended. It provides a specific exemption from fuel calibration requirements for a defined subset of aircraft (Class A using MSG programs) and does not expand beyond this targeted regulatory relief purpose."},"complexity_factors":["References external technical standards (ATA MSG-2 and ATA MSG-3) without reproducing their content","Cross-references to Civil Aviation Order 100.5, Appendix 1, clause 6 and CASR definitions","Relies on undefined technical terms from broader aviation law ('class A aircraft', 'type certificate', 'national aviation authority')","Temporal limitation creates implementation complexity (instrument expired 31 October 2020)"],"plain_english_summary":"This instrument temporarily exempts certain aircraft from mandatory fuel gauge calibration requirements.\n\n**What it does:**\nNormally, Civil Aviation Order 100.5 requires aircraft fuel quantity gauges to be calibrated. This determination says that **Class A aircraft** (generally larger commercial aircraft) are exempt from this requirement **if** they use a manufacturer-approved maintenance program based on modern international standards called **MSG-2 or MSG-3**.\n\n**Who it affects:**\n- Operators of Class A aircraft\n- Aircraft using manufacturer maintenance programs approved by the national aviation authority that originally certified the aircraft type\n- These MSG programs are sophisticated, data-driven maintenance systems developed by manufacturers like Boeing or Airbus\n\n**Why it matters:**\nThis recognizes that modern aircraft using these advanced maintenance programs already maintain high safety standards through continuous monitoring and analysis, making separate fuel gauge calibration requirements redundant for these specific aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/casa-92-17-determination-civil-aviation-order-100-5-non-application-of-fuel-quantity-gauge-calibrati","history":"/api/acts/casa-92-17-determination-civil-aviation-order-100-5-non-application-of-fuel-quantity-gauge-calibrati/history","analysis":"/api/acts/casa-92-17-determination-civil-aviation-order-100-5-non-application-of-fuel-quantity-gauge-calibrati/analysis","conflicts":"/api/acts/casa-92-17-determination-civil-aviation-order-100-5-non-application-of-fuel-quantity-gauge-calibrati/conflicts","importantCases":"/api/acts/casa-92-17-determination-civil-aviation-order-100-5-non-application-of-fuel-quantity-gauge-calibrati/important-cases","documents":"/api/acts/casa-92-17-determination-civil-aviation-order-100-5-non-application-of-fuel-quantity-gauge-calibrati/documents"}}