{"id":"F2006B08031","name":"Airworthiness Directives 2004 - Revocation and Remaking - Skyfox Aviation (Calair/Hedaro) CA21 and CA22A Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-skyfox-aviation-calair-hedaro-ca21-and-ca22a-s","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115101,"registerId":"commonwealth-F2006B08031-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Skyfox Aviation (Calair/Hedaro) CA21 and CA22A 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\nSkyfox Aviation (Calair/Hedaro) CA21 and CA22A Series Aeroplanes\n\nAD Name AD Number\n\nAir Filter Box Rear Mounting Bracket AD/CA21/1\n\nWing Lift Struts AD/CA21/2\n\nRudder Actuator Horn AD/CA21/3\n\nTail Wheel Springs AD/CA21/4\n\nWing Strut Carry Through Structure AD/CA21/5\n\nLife Limited Components AD/CA21/6\n\nAileron Hanger Ribs AD/CA21/7 Amdt 1\n\nThrottle Control Grub Screw AD/CA21/8\n\nCarburettor Heat Modification Number 7/97 AD/CA21/9\n\nAilerons AD/CA21/10 Amdt 1\n\nEngine Air Intake Hoses AD/CA21/11\n\nRudder Pedal Cable Attachment Lug AD/CA21/12","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope unchanged: the instrument revokes and remakes the listed ADs without altering their content (each is reissued \"in exactly the same form\" as the latest published edition). The legal and compliance obligations that flow from those ADs therefore remain in force; the change is administrative and procedural under the delegate's power."},"complexity_factors":["Administrative reissuance rather than substantive amendment — ADs are remade \"in exactly the same form\"","Legal authority specified (subregulation 39.001(1)) for the delegate's action","Multiple discrete AD instruments listed (eleven items, some showing prior amendments)","Continued operational compliance obligations for aircraft owners/operators (implies ongoing maintenance/inspection costs)","Recordkeeping/administrative steps required to treat each AD as a separate instrument"],"plain_english_summary":"This instrument, made under subregulation 39.001(1), revokes a list of Airworthiness Directives for Skyfox (Calair/Hedaro) CA21 and CA22A aeroplanes and remakes each as a separate instrument. The re-made Directives are declared to be identical to their latest published editions. It affects owners/operators of those aeroplanes because the ADs set mandatory maintenance/inspection requirements; CASA’s delegate makes the change and operators bear compliance costs."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The legislation maintains its original scope precisely. The explicit note states each directive is being re-made 'in exactly the same form as appears in the latest published edition.' This is a pure administrative remaking without expansion of subject matter, aircraft coverage, or technical requirements."},"complexity_factors":["Very short document (approximately 250 words)","Only 1 defined term implicitly used (subregulation reference)","No conditional logic or nested exceptions","Simple binary structure: revoke (a) and remake (b)","Schedule 1 is a straightforward table listing 12 items","No cross-references to other legislation beyond the enabling regulation (Civil Aviation Safety Regulations 1998)","Explicit note clarifying that content remains unchanged ('exactly the same form')","Single operative clause with clear delegation authority"],"plain_english_summary":"This CASA safety order revokes and reissues 12 existing Airworthiness Directives for Skyfox/Calair/Hedaro CA21 and CA22A light aircraft. It doesn't change the technical requirements — it simply remakes the directives as new legal instruments so the mandatory maintenance and safety obligations remain enforceable. Owners, operators and maintainers of these aircraft must continue complying with the same rules."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-skyfox-aviation-calair-hedaro-ca21-and-ca22a-s","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-skyfox-aviation-calair-hedaro-ca21-and-ca22a-s/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-skyfox-aviation-calair-hedaro-ca21-and-ca22a-s/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-skyfox-aviation-calair-hedaro-ca21-and-ca22a-s/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-skyfox-aviation-calair-hedaro-ca21-and-ca22a-s/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-skyfox-aviation-calair-hedaro-ca21-and-ca22a-s/documents"}}