{"id":"F2005L01299","name":"AD/F406/14 - Rudder Hinge Brackets and Bearings","slug":"ad-f406-14-rudder-hinge-brackets-and-bearings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":35031,"registerId":"commonwealth-F2005L01299-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Reims Aviation F406 Series Aeroplanes","sectionType":"division","heading":"Reims Aviation F406 Series Aeroplanes","content":"### Reims Aviation F406 Series Aeroplanes\n\n| AD/F406/14 | Rudder Hinge Brackets and Bearings | 7/2005 |\n| ---------- | ---------------------------------- | ------ |\n\n| Applicability: | Model F406 aircraft, serial numbers 0001 through 0092.                                                                                                                                                                                     |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Action in accordance with REIMS AVIATION Service Bulletin No. F406-57, or later EASA approved revision.Note: DGAC AD F-2005-081 refers.                                                                                                    |\n| Compliance:    | Within 100 flight hours or 3 months after 7 July 2005, whichever occurs first.                                                                                                                                                             |\n|                | This Airworthiness Directive becomes effective on 7 July 2005.                                                                                                                                                                             |\n| Background:    | The DGAC received several reports of corrosion on the rudder hinge bearings, which had propagated to the rudder hinge brackets. This condition, if left uncorrected, could result in failure of the brackets and separation of the rudder. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n27 May 2005","sortOrder":0},{"sectionNumber":"AD/F406/14","sectionType":"part","heading":"AD/F406/14","content":"## AD/F406/14","sortOrder":1},{"sectionNumber":"Rudder Hinge Brackets and Bearings","sectionType":"part","heading":"Rudder Hinge Brackets and Bearings","content":"## Rudder Hinge Brackets and Bearings","sortOrder":2},{"sectionNumber":"7/2005","sectionType":"part","heading":"7/2005","content":"## 7/2005","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive sets a clear, narrow scope: Model F406 aeroplanes serials 0001–0092 and actions per Service Bulletin No. F406‑57 (or later EASA‑approved revision). The instrument does not indicate any expansion or reduction of that scope beyond the stated applicability and the allowance to use later EASA‑approved revisions."},"complexity_factors":["Applicability limited to specific airframe serial numbers (0001–0092) — narrows affected population and directs which operators must act. (Applicability)","Requirement refers to an external technical document (Reims Aviation Service Bulletin No. F406‑57) or later EASA‑approved revision — detailed work depends on that document. (Requirement)","Dual compliance deadline (whichever occurs first of flight hours or calendar time) creates a short, measurable compliance window. (Compliance)","Cross-reference to DGAC AD F-2005-081 — introduces coordination with a foreign authority's directive. (Requirement/Note)","Stated safety risk (corrosion propagating from bearings to brackets with potential rudder separation) makes the action urgent and safety-critical. (Background)","Effective date specified (7 July 2005) — limited lead time between issue and required compliance. (Compliance)"],"plain_english_summary":"Requires owners/operators of Reims Aviation F406 aeroplanes (serials 0001–0092) to inspect and, if necessary, repair or replace rudder hinge brackets and bearings in accordance with Reims Aviation Service Bulletin No. F406‑57 or a later EASA‑approved revision. (Requirement; Applicability)\n\nWork must be completed within 100 flight hours or 3 months after 7 July 2005 to address reported corrosion that could lead to bracket failure and separation of the rudder. (Compliance; Background)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive with a narrow, specific safety purpose. It has not expanded beyond its original intent of addressing a specific corrosion defect in a specific aircraft model."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined applicability criterion (serial number range)","Single compliance action referencing an external technical document","No nested conditions, exceptions, or cross-references to other legislation","Straightforward temporal compliance trigger (flight hours OR calendar date)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of specific Reims Aviation F406 aircraft to inspect and fix a dangerous corrosion problem.\n\n**What the problem is:**\nThe French aviation authority (DGAC) discovered that rust was forming on the rudder hinge bearings and spreading to the brackets that hold the rudder in place. If this isn't fixed, the brackets could break and the rudder could fall off — a catastrophic failure that would make the plane uncontrollable.\n\n**Who must act:**\nAnyone who owns or operates a Reims Aviation F406 aircraft with serial numbers 0001 through 0092.\n\n**What they must do:**\nFollow the instructions in **Reims Aviation Service Bulletin F406-57** (or any later version approved by EASA, Europe's aviation safety agency). This bulletin contains the technical steps to inspect, repair, or replace the corroded parts.\n\n**When they must do it:**\nWithin **100 flight hours** or **3 months** after 7 July 2005 — whichever comes first.\n\n**Why it matters:**\nThis is a life-or-death safety issue. The directive forces operators to fix a known defect before it causes an accident. Ignoring an AD is illegal and grounds an aircraft until compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f406-14-rudder-hinge-brackets-and-bearings","history":"/api/acts/ad-f406-14-rudder-hinge-brackets-and-bearings/history","analysis":"/api/acts/ad-f406-14-rudder-hinge-brackets-and-bearings/analysis","conflicts":"/api/acts/ad-f406-14-rudder-hinge-brackets-and-bearings/conflicts","importantCases":"/api/acts/ad-f406-14-rudder-hinge-brackets-and-bearings/important-cases","documents":"/api/acts/ad-f406-14-rudder-hinge-brackets-and-bearings/documents"}}