{"id":"F2006B07889","name":"Airworthiness Directives 2004 - Revocation and Remaking - Grumman G21 (Goose) Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-grumman-g21-goose-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50893,"registerId":"commonwealth-F2006B07889-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Grumman G21 (Goose) Series Aeroplanes","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nGrumman G21 (Goose) Series Aeroplanes\n\nAD Name AD Number\n\nBelow Floor Control System Components - Inspection AD/G21/1\n\nHorizontal Stabiliser Lower Strut Fittings - Inspection and Life Limitation AD/G21/2\n\nHorizontal Stabiliser Forward Attachment and Strut Upper Terminal - Inspection AD/G21/3\n\nRudder Control Push-Rod Assembly P/N 12727-1 - Inspection AD/G21/4\n\nFuel Tank Baffles - Inspection AD/G21/5","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument explicitly revokes the listed ADs and remakes each in the same form as the latest published editions (see Note). It therefore preserves the original scope and obligations of those ADs rather than expanding, narrowing or otherwise amending them."},"complexity_factors":["Procedural action: revocation and re‑making of instruments rather than substantive amendment (Note: each AD re‑made in exactly the same form).","Legal authority is a single delegation under subregulation 39.001(1), keeping decision‑making concentrated and straightforward.","Schedule 1 lists five specific ADs by name and number, which creates a narrow, well‑defined scope limited to Grumman G21 series aircraft.","AD titles indicate operational requirements (inspections; life limitations), so compliance requires technical work, record‑keeping and potential maintenance costs for affected parties.","Administrative effect of converting each AD into a separate instrument (explicit separation may add minor procedural/filing steps)."],"plain_english_summary":"This instrument, signed by a CASA delegate under subregulation 39.001(1), revokes five existing Airworthiness Directives for Grumman G21 (Goose) aeroplanes and re‑makes each as a separate, attached instrument. It keeps the existing inspection and life‑limitation requirements in force. Owners, operators and maintenance organisations of G21 aircraft remain responsible for performing the inspections, observing life limits and keeping records; the measure preserves existing compliance obligations rather than changing them."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The legislation maintains exactly the same scope as the original directives. The instrument explicitly states that each directive is being remade 'in exactly the same form as appears in the latest published edition.' This is a procedural renewal, not an expansion of regulatory scope."},"complexity_factors":["Very short instrument (under 300 words)","Only 5 defined items in Schedule 1 (the AD numbers and names)","No conditional logic or nested exceptions","Single operative provision with straightforward (a) and (b) structure","No cross-references to other legislation beyond the enabling regulation (subregulation 39.001(1))","Purpose is purely administrative—revoke and remake without substantive change"],"plain_english_summary":"This is a technical aviation safety instrument that **revokes and immediately remakes five specific airworthiness directives** for a particular type of vintage aircraft—the Grumman G21 \"Goose\" series.\n\n**What it does:**\n- **Revokes** five existing safety directives (AD/G21/1 through AD/G21/5) that were previously in force\n- **Remakes** those same five directives as new, separate legal instruments\n- The remade directives are **identical** to the previous versions—no changes to the actual safety requirements\n\n**Who it affects:**\n- Owners and operators of Grumman G21 \"Goose\" amphibious aircraft (a twin-engine flying boat design from the 1930s-40s)\n- Maintenance organisations servicing these aircraft\n- The Civil Aviation Safety Authority (CASA) itself\n\n**Why it matters:**\nThis is an **administrative housekeeping exercise**. CASA delegates regularly need to \"remake\" directives to ensure they remain valid legal instruments under current regulations. The five directives cover critical safety inspections:\n- Control system components below the floor\n- Horizontal stabiliser strut fittings and attachments  \n- Rudder control push-rod assembly\n- Fuel tank baffles\n\nWithout this instrument, the old directives might lapse or have uncertain legal status. By remaking them, CASA ensures continuous, legally enforceable safety standards for these classic aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-grumman-g21-goose-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-grumman-g21-goose-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-grumman-g21-goose-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-grumman-g21-goose-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-grumman-g21-goose-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-grumman-g21-goose-series-aeroplanes/documents"}}