{"id":"F2025L00471","name":"CASA EX35/25 — Cessna Aircraft (Supplemental Inspection Documents’ Requirements) Exemption 2025","slug":"casa-ex35-25-cessna-aircraft-supplemental-inspection-documents-requirements-exemption-2025","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":106273,"registerId":"commonwealth-F2025L00471-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"CASA EX35/25 — Cessna Aircraft (Supplemental Inspection Documents’ Requirements) Exemption 2025","content":"Instrument number CASA EX35/25\n\nI, Daniel bernard o’hagan, Section Manager Drafting, Legal, International & Regulatory Affairs Division, a delegate of CASA, make this instrument under regulation 11.160 of the Civil Aviation Safety Regulations 1998.\n\n\\[Signed D.B. O’Hagan\\]\n\nDanny O’Hagan  \nSection Manager Drafting  \nLegal, International & Regulatory Affairs Division\n\n28 March 2025\n\nCASA EX35/25 — Cessna Aircraft (Supplemental Inspection Documents’ Requirements) Exemption 2025\n\n1 Name\n\nThis instrument is CASA EX35/25 — Cessna Aircraft (Supplemental Inspection Documents’ Requirements) Exemption 2025.\n\n2 Duration\n\nThis instrument:\n\n(a) commences on 1 April 2025; and\n\n(b) is repealed at the end of 31 March 2028.\n\n3 Definitions\n\n> Note In this instrument, certain terms and expressions have the same meaning as they have in the Civil Aviation Act 1988 and the regulations. These include aerial work certificate, aircraft component, aircraft material, airworthiness directive, carrying out maintenance, CASA maintenance schedule, foreign type certificate, limited category aircraft, maintenance data, manufacturer’s maintenance schedule, non-scheduled air transport operation, private operation and registered operator.\n\nIn this instrument:\n\n> aerial application operation has the meaning given by regulation 137.010 of CASR.\n\n> airworthiness directive has the meaning given by regulation 39.001A of CASR.\n\n> Part 141 flight training has the meaning given by subregulation 141.015(1) of CASR.\n\n> Part 142 activity has the meaning given by subregulation 142.015(1) of CASR.\n\n> relevant aircraft means an aeroplane:\n\n> manufactured by Cessna Aircraft Company, or for which a foreign type certificate was issued to Cessna Aircraft Company; and\n\n2.  to which a relevant document applies; and\n3.  for which the aircraft’s maintenance schedule is the manufacturer’s maintenance schedule or the CASA maintenance schedule.\n\n> relevant document means:\n\n(a) for an aeroplane mentioned in paragraph 4(1)(a) or (b) — any SID; or\n\n(b) for an aeroplane mentioned in paragraph 4(1)(c) — any of the following documents issued by Cessna Aircraft Company, as the document exists from time to time:\n\n(i) Service Bulletin SEB03-1, Elevator Rivet Installation;\n\n(ii) Service Bulletin SB02-55-01, Elevator Rivet Installation;\n\n(iii) Service Bulletin SEB05-2, Fuselage Skin and Fuel Step Inspection and Modification;\n\n(iv) Service Bulletin SE84-15, Shimmy Dampener Installation Improvement;\n\n(v) each SID part that relates to the aircraft landing gear of a relevant aircraft and is identified with a supplemental inspection number beginning with “32-”.\n\n> SID means a supplemental inspection document issued by Cessna Aircraft Company, as the document exists from time to time.\n\n> Note Some SIDs were issued by Cessna Aircraft Company as maintenance data in the form of separate instructions specifying how maintenance on a relevant aircraft, or on an aircraft component or aircraft material of a relevant aircraft, is to be carried out, and others in the form of revisions to Cessna aircraft maintenance manuals for specific Cessna aircraft models where they are identified with the heading “Supplemental Inspection Document”. All SIDs are identified by a supplemental inspection number (e.g. “55-10-01”).\n\n4 Application\n\n(1) This instrument applies in relation to a relevant aircraft if:\n\n(a) the aircraft is used only for any of the following purposes:\n\n(i) to conduct a private operation;\n\n(ii) Part 141 flight training;\n\n(iii) a Part 142 activity;\n\n(iv) to facilitate a parachute descent under Part 105 of CASR;\n\n(v) to conduct an operation that is required to be conducted under the authority of an aerial work certificate;\n\n(vi) to conduct an aerial application operation; or\n\n(b) the aircraft is a limited category aircraft or Part 103 aircraft; or\n\n(c) the aircraft is a single-engine aeroplane, which is used only for any of the following purposes:\n\n(i) to conduct a non‑scheduled air transport operation;\n\n(ii) a purpose mentioned in paragraph (a).\n\n(2) The exemption granted under section 5, 6 or 7 applies to the person mentioned in the section, to the extent mentioned in the section, only if a current airworthiness directive does not require that maintenance carried out on a relevant aircraft be carried out in accordance with a relevant document.\n\n> Note See regulation 39.003 of CASR (Australian aircraft covered by airworthiness directive not to be operated).\n\n5 Exemption — registered operator\n\nThe registered operator of a relevant aircraft is exempt from compliance with subregulation 41(1) of CAR to the extent that the subregulation requires that the operator must ensure that the maintenance mentioned in the subregulation is required to be carried out on the aircraft in accordance with a relevant document.\n\n6 Exemption — person carrying out maintenance\n\nA person carrying out maintenance on a relevant aircraft is exempt from compliance with subregulation 42V(1) of CAR to the extent that the person must ensure that the maintenance is carried out in accordance with a relevant document.\n\n7 Exemption — person certifying maintenance\n\nA person certifying maintenance carried out on a relevant aircraft is exempt from compliance with subregulation 42ZP(1) of CAR to the extent that the subregulation requires that the person must not certify the completion of maintenance carried out on the aircraft, or on an aircraft component or aircraft material of the aircraft, if it was not carried out in accordance with a relevant document.\n\n> Note See paragraph 20AA(4)(d) of the Civil Aviation Act 1988 for an obligation relating to commencing a flight, or permitting a flight to commence, in an aircraft that is unsafe for flight. Having regard to that obligation, despite this instrument, the registered operator of a relevant aircraft may choose to continue to ensure its maintenance is carried out in accordance with a relevant document, to ensure the continued airworthiness of the aircraft. See CASA Airworthiness Bulletin AWB 02-048 Issue 8, Compliance with Cessna Supplemental Inspection Documents (SIDS) for further information.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This instrument appears consistent with its original purpose as a time-limited exemption from specific maintenance requirements. The scope is tightly constrained to Cessna SIDs and specific operational categories, with appropriate safety safeguards (airworthiness directive override, general safety duty preservation). No evidence of scope creep beyond the stated regulatory relief purpose."},"complexity_factors":["Multiple nested definitions: 'relevant aircraft' depends on 'relevant document', which has different meanings for different aircraft categories in paragraph 4(1)","Conditional application logic in section 4 with three alternative pathways (paragraphs a, b, and c) and multiple sub-conditions","Cross-references to external documents (specific Cessna Service Bulletins and SIDs) that 'exist from time to time' — meaning the exemption automatically updates if Cessna revises these documents","Three separate exemption sections (5, 6, 7) with similar but distinct legal effects on different parties (operators, maintenance personnel, certifiers)","Critical safety override condition in subsection 4(2) linking to airworthiness directives, creating an exception to the exemption","Reference to Civil Aviation Act obligation in the note to section 7, creating a parallel legal duty despite the exemption"],"plain_english_summary":"This is a temporary exemption issued by the Civil Aviation Safety Authority (CASA) that lets certain Cessna aircraft owners and mechanics skip specific supplemental inspection requirements.\n\n**What it does:**\nNormally, owners of Cessna aircraft must follow \"Supplemental Inspection Documents\" (SIDs) — extra safety checks Cessna issued for aging aircraft. This exemption lets certain aircraft operators and maintenance crews ignore those SID requirements for three years.\n\n**Who it affects:**\n- **Registered operators** of specific Cessna aircraft (mostly older models)\n- **Mechanics** who work on these planes\n- **Certifiers** who sign off on maintenance work\n\nThe exemption only applies if the aircraft is used for:\n- Private flying\n- Flight training\n- Parachute operations\n- Aerial work (like crop dusting)\n- Limited category aircraft (special purpose planes)\n- Single-engine planes used for non-scheduled air transport (like charter flights)\n\n**Important limits:**\n- **Does NOT apply** if there's an active airworthiness directive (a mandatory safety order) requiring the SID work\n- The exemption runs from 1 April 2025 to 31 March 2028\n- Aircraft must still be safe to fly — this isn't a free pass to fly unsafe planes\n\n**Why it matters:**\nThis gives Cessna owners temporary relief from expensive and time-consuming inspection requirements, but CASA warns that operators can still choose to follow the SIDs anyway to ensure their planes remain airworthy."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/casa-ex35-25-cessna-aircraft-supplemental-inspection-documents-requirements-exemption-2025","history":"/api/acts/casa-ex35-25-cessna-aircraft-supplemental-inspection-documents-requirements-exemption-2025/history","analysis":"/api/acts/casa-ex35-25-cessna-aircraft-supplemental-inspection-documents-requirements-exemption-2025/analysis","conflicts":"/api/acts/casa-ex35-25-cessna-aircraft-supplemental-inspection-documents-requirements-exemption-2025/conflicts","importantCases":"/api/acts/casa-ex35-25-cessna-aircraft-supplemental-inspection-documents-requirements-exemption-2025/important-cases","documents":"/api/acts/casa-ex35-25-cessna-aircraft-supplemental-inspection-documents-requirements-exemption-2025/documents"}}