{"id":"F2006B10195","name":"AD/GAF-N22/48 - Flap and Aileron Control Rod Fork Ends - Inspection","slug":"ad-gaf-n22-48-flap-and-aileron-control-rod-fork-ends-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55853,"registerId":"commonwealth-F2006B10195-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAF-N22/48 - Flap and Aileron Control Rod Fork Ends - 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\n# AD/GAF-N22/48 Flap and Aileron Control Rod Fork Ends - Inspection\n\nApplicability: All models N22, N22B, N24 and N24A with S/Nos. listed in Service Bulletin NMD-27-24.\n\n \n\nDocument: GAF Service Bulletin NMD-27-24.\n\n \n\nCompliance: Within 100 hours time in service after 30th September 1983.\n\n# 9/83\n\n \n\nBackground: Instances have occurred where rod fork ends P/Ns. 1/N-45-351 and 1/N-45-1059 have been found full of water.\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 directive sets a targeted inspection requirement for the specified GAF N22/N24 models and the serial numbers listed in Service Bulletin NMD-27-24 and requires completion within a defined 100‑hour window after 30 September 1983. There is no text here indicating an expansion or narrowing of scope beyond that targeted set; the instrument delegates technical and serial-number detail to the referenced Service Bulletin. (Applicability; Document; Compliance)"},"complexity_factors":["Narrow applicability limited to specific models (N22, N22B, N24, N24A) and to serial numbers listed in GAF Service Bulletin NMD-27-24. (Applicability; Document)","Short, fixed compliance window (within 100 hours time in service after 30/09/1983) which concentrates scheduling and operational planning. (Compliance)","Dependence on an external technical document (GAF Service Bulletin NMD-27-24) for serial-number scope and inspection detail increases implementation dependency. (Document)","Text states the defect observed (fork ends found full of water) but does not specify corrective actions in the AD itself, creating ambiguity about required follow-up steps. (Background; Document)","Technical nature of the inspection (control rod fork ends, specific part numbers) requires qualified maintenance personnel and appropriate facilities. (Applicability; Background)"],"plain_english_summary":"This directive requires operators of specified GAF N22/N22B/N24/N24A aeroplanes (serial numbers listed in GAF Service Bulletin NMD‑27‑24) to inspect flap and aileron control‑rod fork ends within 100 hours’ time‑in‑service after 30 Sept 1983. It was issued because some fork ends of the referenced part numbers have been found full of water. Operators (or their maintenance contractors) must arrange and pay for the inspection and consult the Service Bulletin for the technical procedure; corrective actions are not specified in the AD text."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive focused on a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating inspections for water contamination in control rod fork ends."},"complexity_factors":["Very short document (approximately 150 words)","Only 2 defined part numbers referenced","Single compliance requirement with clear deadline","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","No conditional logic or exceptions","Straightforward applicability statement referencing an external service bulletin"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It applies to specific **GAF N22 and N24 series aeroplanes** (small aircraft made by the Government Aircraft Factories).\n\n**What it requires:**\n- Owners and operators of affected aircraft must inspect the **flap and aileron control rod fork ends** — these are mechanical parts that connect the pilot's controls to the wing flaps and ailerons (the moving surfaces that help steer and slow the plane).\n- Specifically, they must check part numbers **1/N-45-351 and 1/N-45-1059**.\n\n**Why it matters:**\n- Water was found inside these fork ends, which can cause **corrosion or freezing**. If these parts fail, the pilot could lose control of the flaps or ailerons — critical for safe flight and landing.\n\n**Who must comply:**\n- Anyone operating the listed aircraft models with serial numbers covered by **Service Bulletin NMD-27-24**.\n\n**Deadline:**\n- The inspection had to be done within **100 hours of flying time** after 30 September 1983.\n\nThis is a **one-off safety inspection** to prevent mechanical failure due to water damage."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gaf-n22-48-flap-and-aileron-control-rod-fork-ends-inspection","history":"/api/acts/ad-gaf-n22-48-flap-and-aileron-control-rod-fork-ends-inspection/history","analysis":"/api/acts/ad-gaf-n22-48-flap-and-aileron-control-rod-fork-ends-inspection/analysis","conflicts":"/api/acts/ad-gaf-n22-48-flap-and-aileron-control-rod-fork-ends-inspection/conflicts","importantCases":"/api/acts/ad-gaf-n22-48-flap-and-aileron-control-rod-fork-ends-inspection/important-cases","documents":"/api/acts/ad-gaf-n22-48-flap-and-aileron-control-rod-fork-ends-inspection/documents"}}