{"id":"F2006B07877","name":"Airworthiness Directives 2004 - Revocation and Remaking - GAF N22 and N24 Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-gaf-n22-and-n24-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50867,"registerId":"commonwealth-F2006B07877-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 - GAF N22 and N24 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\nGAF N22 and N24 Series Aeroplanes\n\nAD Name AD Number\n\nCANCELLED AD/GAF-N22/1\n\nRetirement Lives - Fatigue Critical Components AD/GAF-N22/2 Amdt 3\n\nCANCELLED AD/GAF-N22/3\n\nLanding Gear Retraction System - Chain Replacement AD/GAF-N22/4\n\nAileron Control System - Chain Replacement AD/GAF-N22/5\n\nRudder and Stabiliser Trim Systems - Chain Replacement AD/GAF-N22/6\n\nEngine Oil Tank Replacement AD/GAF-N22/7\n\nCANCELLED AD/GAF-N22/8\n\nFuel System Check Valves - Modification AD/GAF-N22/9\n\nMain Landing Gear - Inspection AD/GAF-N22/10\n\nRelocation of Pilot Seat Installations AD/GAF-N22/11 Amdt 1\n\nRudder Control System - Inspection and Modification AD/GAF-N22/12 Amdt 1\n\nFuel Crossfeed Selector Knob - Inspection and Replacement AD/GAF-N22/13 Amdt 1\n\nEngine Air Intake Fairing - Inspection AD/GAF-N22/14\n\nEngine Air Intake Fairing - Inspection and Rework AD/GAF-N22/15\n\nHorizontal Stabiliser Rivets - Inspection AD/GAF-N22/16 Amdt 1\n\nHorizontal Stabiliser Trim Tab System - Inspection and Modification AD/GAF-N22/17 Amdt 1\n\nUpper Engine Cowl Left Hand Stay - Removal AD/GAF-N22/18\n\nRear Baggage Compartment, External Door - Placards AD/GAF-N22/19\n\nHot Air Check Valve - Inspection and Modification AD/GAF-N22/20 Amdt 1\n\nControl Wheel Assembly Retaining Pin - Inspection AD/GAF-N22/21 Amdt 1\n\nFuselage - Wing Centre Section Spar Support Bracket Attachment - Inspection AD/GAF-N22/22\n\nRudder Pedal Guards - Modification AD/GAF-N22/23\n\nAudio System Modification AD/GAF-N22/24\n\nAir Intake Anti-Icing Valve - Inspection and Modification AD/GAF-N22/25\n\nRudder Tab Mass Balance Hinge Pin - Inspection AD/GAF-N22/26\n\nRudder Tab - Modification AD/GAF-N22/27\n\nHorizontal Stabiliser and Trim Tab System AD/GAF-N22/28 Amdt 4\n\nHorizontal Stabiliser - Weather Proofing AD/GAF-N22/29\n\n  \nHorizontal Stabiliser Control System - Inspection for Wind Gust Damage AD/GAF-N22/30\n\nControl Wheel Gimbal Support Structure Tie Rod Attachment Plates - AD/GAF-N22/31\n\nTrim Tab Hinge to Horizontal Stabiliser Attachment - Inspection AD/GAF-N22/32\n\nRudder Structure and Trim Tab Control Rod - Inspection and Modification AD/GAF-N22/33\n\nHorizontal Stabiliser Gust Lock - Installation AD/GAF-N22/34\n\nHorizontal Stabiliser Trim Tab System - Modification AD/GAF-N22/35\n\nHorizontal Stabiliser - Modification AD/GAF-N22/36\n\nRudder Control Torque Shaft Universal Joint - Inspection AD/GAF-N22/37\n\nHorizontal Stabiliser and Trim Tabs - Modification - CANCELLED AD/GAF-N22/38\n\nHorizontal Stabiliser Pivot Bracket Attachment - Inspection and Modification AD/GAF-N22/39 Amdt 1\n\nFuel Tank Selector and Fuel Shut-Off Cables - Inspection AD/GAF-N22/40\n\nEmergency Exit Door Lock Mechanism - Inspection AD/GAF-N22/41\n\nEmergency Exit - External Label AD/GAF-N22/42\n\nAutopilot Aileron Servo Unit Bridle Cable Assembly P/N 1/N-45-1317 - Inspection AD/GAF-N22/43 Amdt 1\n\nRudder Control Lever Shafts AD/GAF-N22/44 Amdt 2\n\nRevised Compliance Requirements for Embodiment of Nomad Service Bulletins AD/GAF-N22/45\n\nControl Wheel Assembly - Inspection and Replacement AD/GAF-N22/46 Amdt 1\n\nEngine Air Intake Modification AD/GAF-N22/47\n\nFlap and Aileron Control Rod Fork Ends - Inspection AD/GAF-N22/48\n\nEmergency Exit - Modification AD/GAF-N22/49\n\nFin Attachment Fittings AD/GAF-N22/50 Amdt 2\n\nRudder Pedal Guard Plate AD/GAF-N22/51\n\nStub Wing Upper Front Spar Cap AD/GAF-N22/52\n\nTaper Pins - Control Systems AD/GAF-N22/53\n\nD.C. Power - Generator Cable Termination AD/GAF-N22/54\n\nRudder Pedal Guard Brush Seals AD/GAF-N22/55\n\nRudder Pedal Pivot Arms AD/GAF-N22/56 Amdt 1\n\nOxygen - Cabin Supply Pipe AD/GAF-N22/57\n\nHorizontal Stabiliser AD/GAF-N22/58 Amdt 5\n\nEngine Ground Running AD/GAF-N22/59 Amdt 1\n\nHorizontal Stabiliser Pivot Bearings and Brackets AD/GAF-N22/60\n\nTrim Tab Hinge AD/GAF-N22/61 Amdt 1\n\nStub Fin AD/GAF-N22/62 Amdt 1\n\nStub Fin Plate P/N 1D/N-12-57 AD/GAF-N22/63 Amdt 1\n\nAileron Structure AD/GAF-N22/64\n\nRear Fuselage Frame AD/GAF-N22/65 Amdt 3\n\n  \nStub Fin Ribs AD/GAF-N22/66 Amdt 2\n\nFlap Components - Retirement Lives AD/GAF-N22/67\n\nHorizontal Stabiliser - Main Spar and Upper Skin AD/GAF-N22/68\n\nAilerons AD/GAF-N22/69 Amdt 4\n\nWing Strut Upper End Fitting AD/GAF-N22/70 Amdt 2\n\nLanding Gear AD/GAF-N22/71\n\nUpper Fin Rear Attachment Points AD/GAF-N22/72\n\nRudder Pedals Brake Push Rod AD/GAF-N22/73\n\nLeft Wing Aft Wing Break Electrical Connector AD/GAF-N22/74 Amdt 1\n\nHorizontal Stabiliser Access Panel Intercostal Angles and Upper and Lower AD/GAF-N22/75 Amdt 1","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument is an administrative housekeeping measure: it revokes listed ADs and re‑issues them in the same form as their latest published editions. It does not expand or add substantive technical obligations beyond the existing ADs, so it does not change the scope of regulatory coverage compared with the original purpose of those directives. Any change is procedural rather than substantive."},"complexity_factors":["Single operative clause revokes and re‑issues ADs under subregulation 39.001(1) (simple legal mechanism).","Schedule lists a large number of AD entries (approximately 75 AD identifiers listed, some marked CANCELLED).","Multiple ADs carry amendment histories (e.g. \"Amdt 1\" through \"Amdt 5\"), creating some record‑keeping complexity for operators confirming the latest version.","Mixture of cancelations and active re‑issues in the Schedule increases transitional tracking requirements.","No nested exceptions or conditional logic in the instrument itself — technical complexity resides in the separate ADs (not reproduced here)."],"plain_english_summary":"**What this instrument does (mechanically)**\n\n- 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) for GAF N22 and N24 series aeroplanes and to re‑make each revoked AD as a separate instrument.  \n- The Schedule lists the individual ADs (many with amendment numbers) that are revoked and re‑issued. The instrument states that each re‑made AD is in exactly the same form as the latest published edition of that AD.\n\n**Who this affects**\n\n- Owners and operators of GAF N22 and N24 series aircraft.  \n- Maintenance organisations, engineers and repair stations who perform inspections, modifications or record keeping required by those ADs.  \n- CASA and its delegates, who administer, publish and enforce ADs.\n\n**Why it matters**\n\n- Airworthiness Directives set mandatory inspection, modification, replacement or retirement requirements for specific aircraft components. Operators must follow ADs to keep aircraft legally airworthy. Re‑making those ADs preserves the existing safety requirements while changing how they are issued and recorded.\n\n**Practical effect on behaviour and costs**\n\n- Substantive technical obligations on operators do not change by this instrument (the text affirmatively says each AD is re‑made in the same form). Operators still must carry out and document the inspections, modifications or part replacements specified in the ADs.  \n- The immediate burden is administrative: operators and maintenance organisations may need to update compliance records, manuals, and internal procedures to reference the newly issued individual AD instruments.  \n- CASA bears the administrative cost of revoking and re‑issuing the instruments; operators bear the bookkeeping and compliance-update costs. There is no new technical work unless an operator’s records were incomplete or inconsistent and need correction.\n\n**Implementation and compliance risks**\n\n- The change is primarily administrative. Risks are mainly transitional: possible confusion about which instrument number to cite in maintenance logs, timing gaps if publication/notification is delayed, and extra work for organisations to relabel documents and update systems.  \n- Because the substance is unchanged, there is no new compliance testing, but enforcement action will proceed against whichever instrument is current once the re‑issues take effect.\n\n**Source’s stated purpose and a quick test of trade‑offs**\n\n- The instrument asserts its purpose is to revoke listed ADs and re‑make them as separate instruments in their latest published form. If that administrative purpose is accurate, the trade‑off is small: CASA gains a refreshed, separately issued set of AD instruments (likely easier to manage or publish individually) while operators incur modest administrative update costs.  \n- There is limited implementation risk and no apparent change to substantive safety requirements. The action concentrates administrative benefit with CASA (cleaner instrument set) and diffuses small paperwork costs across many operators and maintenance providers.\n\n**Which behaviours decisively change**\n\n- CASA (the delegate) decides and publishes the individual AD instruments.  \n- Aircraft owners/operators and maintenance organisations must update records to reference the newly re‑made AD instruments and ensure continued compliance with the unchanged technical requirements.  \n\nRelevant provision cited: the delegate acts under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 and the Schedule lists the ADs being revoked and re‑made."},"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 scope remains exactly as intended — this is a procedural remaking instrument with no expansion of regulatory reach. The note explicitly confirms each AD is remade 'in exactly the same form' as previously published, indicating no substantive change to scope or requirements."},"complexity_factors":["Simple, single-purpose instrument with clear structure (revocation list + remaking authority)","No defined terms section — relies on external understanding of 'Airworthiness Directive' and aircraft terminology","No conditional logic or nested exceptions within the instrument itself","Cross-references limited to Schedule 1 table and subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998","Substantive complexity is external: the 75 attached ADs themselves contain detailed technical requirements, but this instrument is purely procedural","Straightforward tabular format for Schedule 1 listing AD numbers and descriptive names"],"plain_english_summary":"This CASA order revokes 75 existing Airworthiness Directives for GAF N22/N24 (Nomad) aircraft and re‑issues most of them as individual, standalone legal instruments. Three directives (AD/GAF‑N22/1, /3, /38) are cancelled entirely.\n\nOwners, operators and maintenance organisations are affected—safety obligations remain unchanged, but the legal presentation is reorganised to make individual directives easier to reference and update."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-gaf-n22-and-n24-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-gaf-n22-and-n24-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-gaf-n22-and-n24-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-gaf-n22-and-n24-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-gaf-n22-and-n24-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-gaf-n22-and-n24-series-aeroplanes/documents"}}