{"id":"F2006B09781","name":"AD/F28/46 - Aileron Control Cables - Inspection","slug":"ad-f28-46-aileron-control-cables-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54700,"registerId":"commonwealth-F2006B09781-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F28/46 - Aileron Control Cables - 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)  Fokker F28 Series Aeroplanes\n\n \n\nAD/F28/46 Aileron Control Cables - Inspection 1/83\n\nApplicability: All model F28 S/Nos. 11003 and subsequent. Document:  1. Netherlands AD 82-41-27.\n\n2. Fokker Alert Service Bulletin F28/27-A150. Compliance: As per requirement document 1.\n\nBackground: Manufacturer reports a case of a blocked aileron control which occurred after take- off.\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":3,"scope_assessment":{"changed":false,"description":"No change of scope is evident in the text provided. The AD applies to Fokker F28 aeroplanes with serial numbers 11003 and subsequent and requires inspections as set out in the referenced Netherlands AD 82-41-27 (Applicability; Document; Compliance). The Background explains the triggering event (a reported blocked aileron control), which is consistent with the inspections required; the instrument itself does not expand or narrow applicability beyond that statement."},"complexity_factors":["Short, narrowly targeted instrument with a single technical focus (applicability limited to F28 S/Nos 11003 and subsequent). (Applicability)","Relies entirely on external documents (Netherlands AD 82-41-27 and Fokker Alert Service Bulletin F28/27-A150) for technical detail and compliance steps, rather than specifying them in the AD text. (Document; Compliance)","Technical subject matter (aileron control cables) requires specialist maintenance knowledge to implement inspections and repairs — the AD delegates those specifics to the referenced documents. (Background; Document)","Operational impacts (inspection scheduling, potential downtime, repair costs) are not specified in the AD and must be inferred from or obtained in the referenced documents, adding operational coordination complexity. (Compliance; Document)","Regulatory mechanism is straightforward but leaves practical discretion and technical interpretation to the referenced documents and to the parties executing the maintenance. (header; Document)"],"plain_english_summary":"What this instrument does (mechanically)\n\n- Requires inspection of aileron control cables on Fokker F28 series aircraft with serial numbers 11003 and subsequent (Applicability).\n- Directs operators to carry out those inspections in accordance with the Netherlands Airworthiness Directive 82-41-27 (Document 1) and references Fokker Alert Service Bulletin F28/27-A150 (Document 2). The Compliance line states: “As per requirement document 1.”\n\nWho is affected\n\n- Owners/operators and maintenance organisations responsible for Fokker F28 aircraft with S/N 11003 and later (Applicability).\n\nWhy the measure is in place (stated purpose) and how that links to obligations\n\n- The Background states the manufacturer reported a case of a blocked aileron control that occurred after take-off. The AD therefore requires inspections intended to detect and address whatever fault produced that blocked aileron (Background).\n\nWho pays, who decides, and what behaviour changes\n\n- Who pays: the owners/operators and their maintenance providers will incur the direct costs of performing inspections, any required follow-up maintenance, and any operational disruption while inspections/repairs are carried out (Compliance; Applicability).\n- Who decides: the directive is issued under the Commonwealth Civil Aviation Regulations framework and appears in the Civil Aviation Safety Authority schedule of airworthiness directives; it instructs compliance with an external Netherlands AD (header; Document 1). The AD delegates the technical content and procedures to the referenced Netherlands AD and the Fokker Alert Service Bulletin (Document 1; Document 2).\n- Behaviour changes required: operators must perform the inspections described in the referenced documents instead of relying solely on existing maintenance cycles. If defects are found, operators will need to carry out corrective maintenance per the referenced documents.\n\nCosts, incentives, trade-offs and practical implementation points (source-referenced)\n\n- Compliance burden and cost: the AD’s compliance line points to an external documentary requirement rather than setting out inspection intervals or methods in the instrument itself; this shifts the technical detail and practical steps to Document 1 (Compliance; Document). That creates a compliance cost for operators who must obtain and follow the Netherlands AD and the Fokker Alert Service Bulletin (Document 1; Document 2).\n- Implementation risk / clarity: because the AD refers to an external AD for the required actions, the AD text here does not itself specify timing, scope or acceptance criteria. Operators must consult Document 1 for those specifics; absence of those details in this text creates reliance on the availability and content of the referenced document (Compliance; Document).\n- Incentives and substitution effects: the AD’s inspection requirement creates a direct incentive for operators to inspect and, if necessary, repair aileron control cables. That may lead to short-term aircraft downtime and maintenance expenditure; any longer-term changes to maintenance programmes depend on the inspection frequency and findings in Document 1 (Compliance; Document).\n- Distribution of effects: the directive applies only to a defined set of serial-numbered aircraft (Applicability), concentrating the inspection obligation on operators of those specific airframes. The stated safety trigger is a reported blocked aileron control (Background).\n\nPractical takeaway\n\n- If you operate or maintain Fokker F28 aeroplanes S/N 11003 and later, you must follow the Netherlands AD 82-41-27 (and the referenced Fokker Alert Service Bulletin) to carry out the inspections described there. The AD text here does not reproduce inspection procedures or intervals; those are in the referenced documents (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 specifically on aileron control cable inspections for one aircraft type. It has not expanded beyond its original safety purpose."},"complexity_factors":["Very short document (approximately 150 words)","No defined terms section — uses standard aviation terminology only","No conditional logic or nested exceptions","Single compliance pathway: 'As per requirement document 1'","Cross-references only to external documents (Netherlands AD and Fokker bulletin), not to other legislative provisions","No internal structural divisions (Parts, Divisions, sections)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) for **Fokker F28 series aircraft**.\n\n**What it does:**\n- Requires inspection of the **aileron control cables** (the cables that connect the pilot's control wheel to the wing flaps that help steer the plane)\n- Mandates compliance with a Netherlands aviation directive (AD 82-41-27) and a Fokker service bulletin (F28/27-A150)\n\n**Who it affects:**\n- All Fokker F28 aircraft with **serial numbers 11003 and onwards**\n- Airlines, maintenance organisations, and operators of these aircraft in Australia\n\n**Why it matters:**\n- The directive was issued after a manufacturer reported a **blocked aileron control incident that occurred after take-off**\n- Blocked ailerons mean the pilot cannot control the aircraft's roll (banking left or right), which is extremely dangerous during flight\n- This is a **mandatory safety requirement** — operators must comply to keep their aircraft airworthy and legally able to fly in Australian airspace"}},"importantCases":[],"_links":{"self":"/api/acts/ad-f28-46-aileron-control-cables-inspection","history":"/api/acts/ad-f28-46-aileron-control-cables-inspection/history","analysis":"/api/acts/ad-f28-46-aileron-control-cables-inspection/analysis","conflicts":"/api/acts/ad-f28-46-aileron-control-cables-inspection/conflicts","importantCases":"/api/acts/ad-f28-46-aileron-control-cables-inspection/important-cases","documents":"/api/acts/ad-f28-46-aileron-control-cables-inspection/documents"}}