{"id":"F2006B10169","name":"AD/GAF-N22/22 - Fuselage - Wing Centre Section Spar Support Bracket Attachment - Inspection","slug":"ad-gaf-n22-22-fuselage-wing-centre-section-spar-support-bracket-attachment-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55805,"registerId":"commonwealth-F2006B10169-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAF-N22/22 - Fuselage - Wing Centre Section Spar Support Bracket Attachment - Inspection","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  GAF N22 and N24 Series Aeroplanes\n\n \n\nAD/GAF-N22/22 Fuselage - Wing Centre Section Spar Support\n\nBracket Attachment - Inspection\n\n\n8/78\n\n \n\nApplicability: All models N22, N22B, N24 and N24A delivered from factory prior to 4 July 1978. Document:               GAF Alert SB ANMD-16-1 (ANMD-53-2) and Revision 1.\n\nCompliance: Unless already accomplished, within 10 hours time in service after 12 July 1978.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD's scope in the provided text is explicit and narrow: it applies to specified GAF N22/N24 models delivered before 4 July 1978 and requires an inspection within 10 hours time in service after 12 July 1978. The text contains no indication that the scope has been expanded or altered from the directive as written."},"complexity_factors":["Narrow applicability: applies only to N22, N22B, N24 and N24A aeroplanes delivered before 4 July 1978 (Applicability).","Short, specific compliance window: inspection required within 10 hours time in service after 12 July 1978, creating a time‑sensitive operational requirement (Compliance).","Reliance on an external technical document: the AD references GAF Alert SB ANMD-16-1 (ANMD-53-2) Revision 1 for the inspection procedure rather than setting out procedures in the AD text (Document).","Limited detail in the AD about remedial action: the AD specifies inspection but does not include corrective‑action steps or follow‑up timelines in this text (implicit from AD content and Document reference).","Regulatory formality but limited scope: issued under the airworthiness directives schedule (Part 39) but addressing a single component inspection, reducing cross-cutting regulatory complexity (header and AD text)."],"plain_english_summary":"What this instrument does, in plain terms\n\n- This is an airworthiness directive that requires an inspection of the fuselage wing centre section spar support bracket attachment on certain GAF aeroplanes. (See: Applicability; Compliance.)\n\nWho it affects\n\n- Owners and operators of GAF N22, N22B, N24 and N24A aeroplanes that were delivered from the factory before 4 July 1978 must comply. (See: Applicability.)\n- The inspection will normally be carried out by whoever provides maintenance for those aeroplanes (owners/operators or contracted maintenance organisations). The directive points to a manufacturer service bulletin for the inspection procedure. (See: Document.)\n\nWhat it requires, mechanically\n\n- Unless the inspection has already been completed, the required inspection must be done within 10 hours time in service after 12 July 1978. (See: Compliance.)\n- The directive refers operators to GAF Alert Service Bulletin ANMD-16-1 (ANMD-53-2) and Revision 1 for the details of the inspection procedure. The AD text itself does not set out the step‑by‑step procedure. (See: Document.)\n\nWho pays and who decides\n\n- The immediate financial and operational cost (scheduling, labour, any parts if faults are found) falls on the aircraft owner/operator who must arrange the inspection. (Implied by Applicability and Compliance.)\n- The Civil Aviation Safety Authority issued the directive under the airworthiness directive regime (Part 39). The directive directs compliance and points to the manufacturer bulletin for technical steps. (See: header and Document.)\n\nWhy the measure is in place and how to test the claim\n\n- The directive’s stated action is an inspection of a specific fuselage/wing spar support bracket attachment; the text points to the manufacturer’s alert service bulletin for the technical basis and procedure. (See: Document.)\n- Testing the stated claim against costs and incentives: the AD imposes a short, mandatory inspection window (10 hours after 12 July 1978) that requires owners/operators to prioritise and resource the inspection quickly, which creates an operational and financial cost for those parties. Because the AD does not itself include the detailed corrective actions, implementers must consult the referenced service bulletin to know what repairs (and additional costs) might follow an adverse finding. (See: Compliance; Document.)\n\nTrade-offs, compliance burden and implementation risk (mechanical description)\n\n- Compliance burden: a time‑sensitive inspection that must be completed within 10 hours time in service creates a tight scheduling requirement for affected operators. (See: Compliance.)\n- Reliance on external document: the AD refers to the manufacturer’s service bulletin for inspection details; implementers must obtain and follow that bulletin. The AD text does not set out corrective-action steps or times for repair if defects are found, so additional work and decisions will depend on the service bulletin and on maintenance judgement. (See: Document.)\n- Incentives and effects on private activity: private owners/operators must carry out the inspection and absorb associated costs; maintenance providers may see concentrated short‑term demand for inspections from affected owners/operators. (Implied by Applicability, Compliance and Document.)\n\nConcrete behavioural change\n\n- Affected operators must arrange for and complete the specified inspection within the stated time window or demonstrate it was already done. (See: Compliance.)\n\nSource citations\n\n- Applicability: \"All models N22, N22B, N24 and N24A delivered from factory prior to 4 July 1978.\" (Applicability)\n- Procedure reference: \"GAF Alert SB ANMD-16-1 (ANMD-53-2) and Revision 1.\" (Document)\n- Timing requirement: \"Unless already accomplished, within 10 hours time in service after 12 July 1978.\" (Compliance)\n\nSummary statement\n\n- Mechanically, this AD mandates a short‑term inspection of a specific fuselage/wing support bracket on older GAF N22/N24 series aeroplanes, requires owners/operators to carry it out within a 10‑hour window unless already done, and directs implementers to the manufacturer’s alert service bulletin for the technical procedure. (See: Applicability; Document; Compliance.)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused on one specific structural inspection. It has not expanded beyond its original purpose of addressing the wing spar bracket attachment safety issue."},"complexity_factors":["Single, specific technical requirement (one inspection task)","No defined terms section or interpretation provisions","Simple applicability criteria (aircraft model + manufacture date)","Straightforward compliance deadline (fixed date + flight hours)","No cross-references to other legislation or conditional logic","Total length: approximately 150 words of substantive content"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific GAF aircraft models (the N22, N22B, N24, and N24A) to inspect a critical structural component.\n\n**What it does:**\n- **Targets:** A specific bracket that attaches the wing's centre section spar (a major structural beam) to the fuselage. If this bracket fails, the wing could separate from the body of the aircraft.\n- **Requires:** A physical inspection of this bracket attachment point.\n- **Applies to:** All GAF N22 and N24 series planes built before 4 July 1978.\n- **Deadline:** The inspection had to be completed within 10 hours of flying time after 12 July 1978.\n\n**Why it matters:**\nThis directive addresses a potentially catastrophic airframe defect. The tight compliance window (10 flight hours) indicates CASA considered this an urgent safety issue requiring immediate attention to prevent structural failure in flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gaf-n22-22-fuselage-wing-centre-section-spar-support-bracket-attachment-inspection","history":"/api/acts/ad-gaf-n22-22-fuselage-wing-centre-section-spar-support-bracket-attachment-inspection/history","analysis":"/api/acts/ad-gaf-n22-22-fuselage-wing-centre-section-spar-support-bracket-attachment-inspection/analysis","conflicts":"/api/acts/ad-gaf-n22-22-fuselage-wing-centre-section-spar-support-bracket-attachment-inspection/conflicts","importantCases":"/api/acts/ad-gaf-n22-22-fuselage-wing-centre-section-spar-support-bracket-attachment-inspection/important-cases","documents":"/api/acts/ad-gaf-n22-22-fuselage-wing-centre-section-spar-support-bracket-attachment-inspection/documents"}}