{"id":"F2006B07871","name":"Airworthiness Directives 2004 - Revocation and Remaking - Fokker F28 Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-fokker-f28-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50854,"registerId":"commonwealth-F2006B07871-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 - Fokker F28 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\nFokker F28 Series Aeroplanes\n\nAD Name AD Number\n\nService/Emergency Door - Modification AD/F28/1\n\nRudder Support Bracket Bearing - Inspection and Modification AD/F28/2\n\nSpeedbrake Accumulators - Mounting Brackets - Inspection AD/F28/3\n\nLanding Gear Warning - Modification - CANCELLED AD/F28/4\n\nFuel and Hydraulic Valves - Inspection AD/F28/5\n\nFlap Actuators - Inspection AD/F28/6\n\nCANCELLED AD/F28/7\n\nAileron Control Unit - Inspection and Modification AD/F28/8\n\nFlap Vane Drive Mechanism - Inspection AD/F28/9\n\nSpeedbrakes - Inspection - CANCELLED AD/F28/10\n\nLanding Gear - Mechanical Control Systems - Modification AD/F28/11\n\nInspection Requirements - Fatigue Critical Items AD/F28/12 H\n\nRetirement Times - Fatigue Critical Components AD/F28/13 G\n\nAileron Control System - Modification AD/F28/14\n\nHorizontal Stabilizer Control Unit - Modification AD/F28/15\n\nEscape Chute Operating Strap Attachment - Inspection AD/F28/16\n\nMain Landing Gear Wheel - Inspection AD/F28/17\n\nMain Landing Gear Actuator - Inspection and Eye-Bolt Bearing AD/F28/18\n\nCANCELLED AD/F28/19\n\nPowerplant Controls in Nacelle - Replacement of Washers AD/F28/20\n\nPassenger Door - Locking Mechanism Modification AD/F28/21\n\nPassenger Door - Modification AD/F28/22\n\nEngine Controls - Inspection AD/F28/23\n\nCargo Doors - Door Lock Mechanism - Inspection and Modification AD/F28/24 C\n\nCargo Door Latch Fittings - Inspection and Modification AD/F28/25\n\nFuselage Structural Bolt Connections - Inspection and Modification AD/F28/26\n\nLiftdumper System - Wire Protection and Segregation in Pedestal Modification AD/F28/27\n\nMain Landing Gear Side Stay Bracket - Inspection AD/F28/28 Amdt 2\n\nHorizontal Stabilizer Assemblies - Modification AD/F28/29\n\n  \nToilet Compartment Waste Containers - Modification AD/F28/30\n\nAnti-Skid System - Modification AD/F28/31\n\nAileron Feel Trim Spring System - Inspection AD/F28/32\n\nAuxiliary Power Unit Exhaust - Inspection AD/F28/33\n\nFlap Control System - Automatic Reset Feature - Modification AD/F28/34\n\nElectrical Cables - Inspection and Repair AD/F28/35\n\nAPU Enclosure Fuel Drain - Modification AD/F28/36\n\nCargo Door Lock Warning Switch Actuating Mechanism - Modification AD/F28/37\n\nCANCELLED AD/F28/38 Amdt 1\n\nPilot and Passenger Seat Locking Mechanism - Inspection and Modification AD/F28/39\n\nCANCELLED AD/F28/40\n\nWing Flap Mechanical Actuators - Modification AD/F28/41\n\nHorizontal Stabiliser Hinge Bolt Retention - Inspection and Modification AD/F28/42 Amdt 1\n\nWing Flap Mechanical Actuators - Inspection AD/F28/43 Amdt 1\n\nElevator Torque Tubes and Driving Levers - Inspection - CANCELLED AD/F28/44 Amdt 1\n\nStructural Integrity Program AD/F28/45 Amdt 5\n\nAileron Control Cables - Inspection AD/F28/46\n\nCANCELLED AD/F28/47\n\nHorizontal Stabilizer Control Unit Cavity Venting AD/F28/48 Amdt 1\n\nWing Butt Straps and Boundary-Layer Fences AD/F28/49\n\nBoundary Layer Fence AD/F28/50 Amdt 1\n\nMain Landing Gear Bay Cracking AD/F28/51\n\nRudder Pedal Adjustment Mechanism Stops AD/F28/52 Amdt 1\n\nCargo Door Hinges AD/F28/53\n\nHorizontal Stabilizer Control Unit Bolts AD/F28/54\n\nGenerator Control Units AD/F28/55 Amdt 1\n\nInstrument Panel Lights Ballast Transformers AD/F28/56\n\nFrame 1600 Centre Bracket AD/F28/57\n\nMain Frame - Flap Track Beam Support Bracket at Wing Station 5280 AD/F28/58\n\nEmergency Lighting AD/F28/59 Amdt 1\n\nFuselage Lap Joint at Stringer 73 - CANCELLED AD/F28/60 Amdt 2\n\nWings - Rear Spar Web Plate AD/F28/61\n\nAileron Dual Input Quadrant Bracket AD/F28/62\n\nHorizontal Stabiliser Attach Fitting AD/F28/63 Amdt 1\n\nCold-Bonded Lap Joint Rivets AD/F28/64\n\nWire Splices in Skydrol Contaminated Areas - CANCELLED AD/F28/65\n\n  \nCorrosion Prevention and Control Program AD/F28/66 Amdt 4\n\nMLG Main Fitting Subassembly AD/F28/67 Amdt 1\n\nFuselage Lap Joint at Stringer 73 AD/F28/68\n\nAgeing Aircraft Modifications AD/F28/69 Amdt 1\n\nHorizontal Stabilizer Actuator Servo Valve Assembly AD/F28/70 Amdt 1\n\nWing to Fuselage Skin Connection AD/F28/71\n\nElevator Gust Lock and Support Structure AD/F28/72 Amdt 1\n\nPassenger Door Lock Warning System AD/F28/73 Amdt 1\n\nControl Column Aileron Chain - Replacement AD/F28/74\n\nFuselage Skin Lap Joint at Stringer 17/58 AD/F28/75\n\nLanding Gear Locking Mechanism AD/F28/76\n\nRear Cargo Door and Aux. Structure Corrosion AD/F28/77 Amdt 1\n\nLap Joint at Stringer 16/17 and 58/59 AD/F28/78\n\nMain Landing Gear Torque Link Dampers AD/F28/79 Amdt 1\n\nFrame Station 10790 Coupling Fitting Bolts AD/F28/80 Amdt 1\n\nMLG Attachment Bracket AD/F28/81 Amdt 1\n\nFuel Boost Pump Wiring AD/F28/82\n\nEngine Support Filler Plates AD/F28/83\n\nFlight Crew Seat Shoulder Harness AD/F28/84\n\nLiftdumper Microswitches AD/F28/85\n\nFuselage Butt Joint at Stringers 27/48 AD/F28/86\n\nStub Wing Fuselage Structure AD/F28/87\n\nCargo Restraint Strap Assemblies AD/F28/88","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The legislation maintains its original scope precisely. It is purely procedural — revoking and remaking existing Airworthiness Directives without expanding, contracting, or altering their substantive content. The note explicitly states each directive is remade 'in exactly the same form as appears in the latest published edition.'"},"complexity_factors":["Single, clear purpose: revoke and remake existing instruments","No substantive amendments to the attached directives — content remains identical","Straightforward structure: preamble, delegation clause, two operative paragraphs (revocation and remaking), signature, explanatory note, and schedule","Schedule 1 is a simple table listing 88 directive names and numbers with no nested conditions","No defined terms section — relies on external regulations (Civil Aviation Safety Regulations 1998) for authority","No conditional logic or exceptions within the instrument itself","Cross-references limited to subregulation 39.001(1) of the CASR 1998 and the attached schedules"],"plain_english_summary":"This instrument revokes and immediately remakes 88 Airworthiness Directives for Fokker F28 aeroplanes, refreshing the legal instruments without changing any safety requirements. It affects Fokker F28 operators and maintenance organisations in Australia and is an administrative housekeeping step by CASA to align the directives with current regulatory form and procedure.\n\nIf you operate or maintain F28s, your obligations remain the same; only the legal paperwork has been refreshed."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument does not change the substantive scope or technical obligations of the listed Airworthiness Directives. It is an administrative revocation and re‑making exercise: each listed AD is revoked in its previous form and re‑issued \"in exactly the same form as appears in the latest published edition of the Directive.\" Therefore the practical regulatory scope (who must inspect/modify/replace what) remains unchanged; the instrument alters only the legal and publication form of those ADs."},"complexity_factors":["Single, simple power source: action taken under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998","Long Schedule: approximately 88 AD entries listed for revocation and re‑making (many with amendment histories and several marked CANCELLED)","No substantive substantive amendments: each AD is re‑made \"in exactly the same form\" as the latest published edition (so minimal conditional logic)","Presence of cross‑annotations: many entries show amendment identifiers (eg \"Amdt 1\", \"Amdt 4\") and CANCELLED status, increasing the bookkeeping burden","Attachment requirement: each AD is to be re‑made as a separate instrument and attached, implying multiple separate documents to publish and manage"],"plain_english_summary":"**What this instrument does (mechanically)\n\n- This is a short, administrative instrument in which a delegate of the Civil Aviation Safety Authority (CASA) uses the power in subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 to revoke a list of existing Airworthiness Directives (ADs) that apply to Fokker F28 series aeroplanes, and at the same time re‑issue each one as a separate, standalone instrument. The instrument says each re‑made AD is \"in exactly the same form as appears in the latest published edition of the Directive.\" (see subregulation 39.001(1) and Schedule 1.)\n\n**Who is affected\n\n- Aircraft operators and owners of Fokker F28 series aeroplanes who must comply with the listed ADs (these ADs require things like inspections, modifications, replacements, retirement times and maintenance programmes).  \n- Maintenance organisations, licensed engineers and parts suppliers who carry out the inspections, modifications and repairs mandated by those ADs.  \n- CASA (the regulator), which administers, publishes and enforces the ADs.\n\n**Why it matters (practical effect)\n\n- The substantive safety requirements set out in the listed ADs (for example: inspections of landing gear, modifications to control systems, retirement times for fatigue‑critical components, corrosion programmes, etc.) remain in force. The instrument does not change the technical content of those ADs; it re‑issues them as separate instruments for legal and publication purposes.  \n- That means the compliance obligations (who must do what, by when) remain the same in substance, so operators still bear the direct costs of inspections, repairs, modifications and any grounded time while work is done. CASA bears the administrative cost of revoking and re‑issuing the documents and updating its records/publications.\n\n**Official rationale (as stated) and a test against practical trade‑offs\n\n- The instrument is framed as an administrative housekeeping step: revoke a set of ADs listed in Schedule 1, and re‑make each as a separate instrument identical to its latest published form. The stated purpose is administrative consistency and separate issuance of each AD.  \n- Costs and incentives: the change does not alter technical safety requirements, so it does not change the marginal regulatory burden on operators other than any short transitional administrative effort to reconcile citations or document references. The concentrated costs fall on operators who must carry out the AD‑specified work; the administrative costs fall on CASA.  \n- Implementation risks and compliance burden: risks are primarily administrative — potential for temporary confusion if citation numbers, publishing locations or cross‑references change; operators and maintainers need to ensure they reference the correct, re‑issued AD documents. There is no change to delegated discretion in the substance of the ADs because the instrument reproduces existing requirements \"in exactly the same form.\"\n\n**Concrete mechanics and examples of obligations listed\n\n- The Schedule lists many AD topics affecting the Fokker F28 fleet (examples taken from the list): service/emergency door modifications; rudder support bracket inspection and modification; speedbrake accumulator inspections; various landing‑gear inspections and modifications; fuel and hydraulic valve inspections; fatigue‑critical item inspection programmes and retirement times; corrosion prevention programmes; electrical cable inspection and repair; cargo door latch and hinge inspections and modifications; flight crew seat harness requirements; and many more.  \n- Some listed AD entries are already marked as \"CANCELLED\" or show amendment history (eg \"Amdt 1\", \"Amdt 4\"). The instrument revokes those entries and re‑issues them as separate instruments matching the latest published content.\n\n**Who pays, who decides, and behavioural change\n\n- Who pays: Aircraft operators/owners and their maintenance providers pay for carrying out inspections, modifications, replacements and any downtime. CASA bears publication/admin costs.  \n- Who decides: A CASA delegate (named in the instrument) exercised the power under subregulation 39.001(1) to revoke and re‑make the ADs. The underlying ADs' technical requirements were set by CASA through prior AD processes.  \n- Behaviour change: Operators must continue to follow the ADs as re‑issued; they should update their compliance records to cite the re‑made instruments and ensure ongoing maintenance programmes reflect the re‑issued AD documents.\n\n**Net assessment (brief)\n\n- Functionally, this instrument is administrative: it restructures the legal form in which a long list of Fokker F28 ADs are published without changing their technical requirements. The primary trade‑offs are administrative (cost/time to update records and potential for short‑term confusion) rather than substantive changes to regulatory burdens or safety rules."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fokker-f28-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fokker-f28-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fokker-f28-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fokker-f28-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fokker-f28-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-fokker-f28-series-aeroplanes/documents"}}