{"id":"F2006B07948","name":"Airworthiness Directives 2004 - Revocation and Remaking - Pilatus Porter PC-6 Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-pilatus-porter-pc-6-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51024,"registerId":"commonwealth-F2006B07948-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 - Pilatus Porter PC-6 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\nPilatus Porter PC-6 Series Aeroplanes\n\nAD Name AD Number\n\nRudder and Aileron Interconnection - Modification AD/PC-6/1\n\nPropeller Pitch Control - Inspection AD/PC-6/2\n\nAir Intake Heating AD/PC-6/3\n\nAileron Balance Weight Arm - Inspection AD/PC-6/4\n\nFuel Valve - Inspection and Replacement AD/PC-6/5\n\nTail Plane - Modification AD/PC-6/6\n\nTail Plane Hinge Bracket - Inspection AD/PC-6/7\n\nRear Fuselage - Modification AD/PC-6/8\n\nRudder - Modification AD/PC-6/9\n\nEngine Mount - Modification AD/PC-6/10\n\nEngine Mount Ring - Modification AD/PC-6/11\n\nElevator Assembly - Modification AD/PC-6/12\n\nElevator Attachment Bracket - Inspection AD/PC-6/13\n\nRudder Pedal Support - Modification AD/PC-6/14\n\nAileron Cable Pulley - Modification AD/PC-6/15\n\nBattery Installation - Modification AD/PC-6/16\n\nLanding Gear Strut - Modification AD/PC-6/17\n\nHorizontal Stabiliser Tip Plates - Modification AD/PC-6/18\n\nSliding Door - Modification AD/PC-6/19\n\nTrim Cable Guide Tubes - Inspection AD/PC-6/20\n\nControl System Inspection and Modification AD/PC-6/21\n\nWing Fixed Spoilers - Installation AD/PC-6/22\n\nRudder Bottom Nose Rib - Inspection and Modification AD/PC-6/23\n\nAileron Balance Weight Bolts - Modification AD/PC-6/24 Amdt 1\n\nAileron Balance Weight Arms - Inspection AD/PC-6/25 Amdt 1\n\nAileron and Flap Support Bracket - Inspection and Modification AD/PC-6/26\n\nPower Lever Assembly - Inspection and Modification AD/PC-6/27\n\nWing Strut Attachment - Inspection AD/PC-6/28 Amdt 1\n\nPropeller Anti-Reversing Switch - Inspection and Replacement AD/PC-6/29\n\n  \nAnti-Reverse System - Modification AD/PC-6/30\n\nWing Strut Internal Corrosion - Inspection AD/PC-6/31\n\nElevator Attachment Bracket - Inspection and Modification AD/PC-6/32\n\nLifting Sling and Aircraft Lifting Points - Limitations AD/PC-6/33\n\nAdditional Modifications for Compliance with Requirements for Issue of AD/PC-6/34\n\nRudder Bars in Cockpit - Inspection AD/PC-6/35\n\nEngine Fuel Line - Replacement AD/PC-6/36\n\nFlat End Rib - Inspection AD/PC-6/37\n\nHorizontal Stabiliser Inspection AD/PC-6/38\n\nWing Spar and Lift Strut Fatigue Lives AD/PC-6/39\n\nElectric Trim Actuator Attachment Bracket AD/PC-6/40\n\nRudder Pedal Supports AD/PC-6/41\n\nCollector Tank Venting AD/PC-6/42\n\nAileron Attachment Bracket AD/PC-6/43\n\nHorizontal Stabiliser Trim Actuator AD/PC-6/44\n\nFuel Return Line Check Valve AD/PC-6/45\n\nAileron Mass Balance Weights and Flettner Tabs AD/PC-6/46\n\nHorizontal Stabiliser - Trim Warning System AD/PC-6/47\n\nHorizontal Stabiliser Trim Setting AD/PC-6/48\n\nAileron Control System Bellcrank Assembly AD/PC-6/49\n\nInboard Fuel Tanks Rib Structure AD/PC-6/50","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"No substantive scope change. The instrument expressly revokes the listed ADs and re-makes each 'in exactly the same form as appears in the latest published edition of the Directive' (Note and operative paragraph), so the technical requirements and affected aircraft remain the same; the action is administrative reconfirmation and re‑issuance by the CASA delegate under subregulation 39.001(1)."},"complexity_factors":["Administrative action by a CASA delegate under subregulation 39.001(1) (instrument header) — procedural rather than substantive change to each AD.","Large number of individual ADs listed in Schedule 1 (multiple airframe, engine and system items), increasing coordination and record-keeping demands for operators.","Technical heterogeneity of the ADs (components range from rudder, aileron and tailplane items to engine mounts, fuel lines and trim actuators) — requires varied specialist maintenance responses (Schedule 1 entries).","Some ADs show amendment history (e.g. 'Amdt 1') — makes tracking current applicable requirements harder (Schedule 1).","The Note states each attached AD is re-made 'in exactly the same form as appears in the latest published edition of the Directive', so compliance requires consulting the published AD texts (Note).","Converting schedule entries into separate instruments can change administrative filing, citation and enforcement paths — affects regulators and certificate-holders' compliance workflows.","Compliance costs and work (inspections, modifications or replacements required by the ADs) fall to aircraft owners/operators and their maintenance organisations (implied by nature of Airworthiness Directives and Schedule 1)."],"plain_english_summary":"This instrument revokes the listed Airworthiness Directives for Pilatus Porter PC‑6 aeroplanes and re‑makes each as a separate instrument in the same form as their latest published editions. \n\nIt affects owners, operators and maintenance organisations of Pilatus PC‑6 aircraft because those parties must follow the remade directives; the action is taken by a Civil Aviation Safety Authority delegate under subregulation 39.001(1)."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The legislation maintains its original administrative purpose. It does not expand the scope beyond the specific technical task of reissuing existing airworthiness directives for the Pilatus PC-6 aircraft type. The 50 directives listed match the historical safety requirements for this aircraft; no new aircraft types or new technical requirements are added."},"complexity_factors":["Single, clear purpose: revocation and remaking of existing instruments","No substantive technical changes to the underlying safety requirements","Straightforward tabular schedule listing 50 directives by name and number","Minimal conditional logic — operates as a blanket administrative action","No complex cross-referencing between sections (only references to Schedule 1)","Short document (approximately 1 page of operative provisions plus schedule)","Relies on external technical documents (the attached ADs themselves) which are not reproduced in the legislative text"],"plain_english_summary":"This instrument is an administrative housekeeping action by CASA that revokes and immediately remakes 50 existing Airworthiness Directives for Pilatus Porter PC‑6 aeroplanes. It doesn’t change the technical requirements — inspections, modifications or replacements remain mandatory — but reissues each AD separately under current regulations.\n\nWho it affects: owners, operators, maintenance engineers and pilots of PC‑6s. Key action: continue compliance and update records to reference the new AD numbers (AD/PC‑6/1 through AD/PC‑6/50)."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pilatus-porter-pc-6-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pilatus-porter-pc-6-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pilatus-porter-pc-6-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pilatus-porter-pc-6-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pilatus-porter-pc-6-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-pilatus-porter-pc-6-series-aeroplanes/documents"}}