{"id":"F2006B10184","name":"AD/GAF-N22/37 - Rudder Control Torque Shaft Universal Joint - Inspection","slug":"ad-gaf-n22-37-rudder-control-torque-shaft-universal-joint-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55835,"registerId":"commonwealth-F2006B10184-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAF-N22/37 - Rudder Control Torque Shaft Universal Joint - 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-N22/37 Rudder Control Torque Shaft Universal Joint - Inspection\n\nApplicability: All Nomad N22 and N24 Series. Document:  GAF Alert SB No. ANMD 27-17. (Telex). Compliance:               As per requirement document.\n\n# 5/80\n\nBackground: An instance has occurred of an inservice partial collapse of the subject universal joint.\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":4,"scope_assessment":{"changed":false,"description":"The source document does not indicate any change in scope from a prior instrument. It states applicability as \"All Nomad N22 and N24 Series\" and requires compliance with the referenced GAF Alert SB No. ANMD 27-17. No text in the AD states that the applicability or scope has been broadened or narrowed from an earlier version."},"complexity_factors":["Cross-reference to an external technical document (GAF Alert SB No. ANMD 27-17) for procedural details rather than including them in the AD (\"Document\"; \"Compliance\").","Safety‑critical subject matter (rudder control torque shaft universal joint) requires specialist maintenance and may involve parts replacement (\"Background\" implies structural failure risk).","Broad applicability to all Nomad N22 and N24 series increases operational coordination across many operators (\"Applicability\").","The AD text is concise and relies on the broader regulatory framework (Civil Aviation Regulations, Part 39) for enforcement and context (header), potentially requiring users to consult multiple sources.","No explicit statement of exemptions, alternative compliance methods, or enforcement mechanics within the AD itself (absence of detail increases interpretive burden)."],"plain_english_summary":"The directive requires owners, operators and maintenance organisations of all Nomad N22 and N24 aircraft to inspect the rudder control torque‑shaft universal joint, in response to an in‑service partial collapse. Compliance must follow GAF Alert SB No. ANMD 27‑17 (Telex) for procedures, intervals and corrective actions. The inspection and any repairs or replacements are the responsibility and cost of operators, and are mandatory to maintain airworthiness under the Commonwealth civil aviation regime."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original purpose of mandating inspection of the rudder control universal joint."},"complexity_factors":["Extremely short document — only 4 substantive lines of regulatory text","No defined terms section; all language is plain technical aviation terminology","Single compliance requirement: 'As per requirement document' (delegates all detail to external service bulletin)","No conditional logic, exceptions, or nested provisions","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","Background section provides only minimal context (single sentence)"],"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 **GAF Nomad N22 and N24 series aircraft** to inspect the **rudder control torque shaft universal joint**.\n\n**What happened:** A universal joint in the rudder control system partially failed while an aircraft was in service. This is serious because the rudder controls the aircraft's yaw (left-right movement), and a failure could lead to loss of control.\n\n**What must be done:** Aircraft operators must follow the inspection requirements set out in **GAF Alert Service Bulletin ANMD 27-17**.\n\n**Who this affects:** Anyone who owns, operates, or maintains GAF Nomad N22 or N24 aircraft — these are twin-turboprop utility aircraft originally built in Australia.\n\n**Why it matters:** This is a **mandatory** safety action. Non-compliance means the aircraft cannot legally fly. The directive ensures a potential structural failure is caught before it causes an accident."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gaf-n22-37-rudder-control-torque-shaft-universal-joint-inspection","history":"/api/acts/ad-gaf-n22-37-rudder-control-torque-shaft-universal-joint-inspection/history","analysis":"/api/acts/ad-gaf-n22-37-rudder-control-torque-shaft-universal-joint-inspection/analysis","conflicts":"/api/acts/ad-gaf-n22-37-rudder-control-torque-shaft-universal-joint-inspection/conflicts","importantCases":"/api/acts/ad-gaf-n22-37-rudder-control-torque-shaft-universal-joint-inspection/important-cases","documents":"/api/acts/ad-gaf-n22-37-rudder-control-torque-shaft-universal-joint-inspection/documents"}}