{"id":"F2008L03738","name":"AD/A320/178 Amdt 1 - Trimmable Horizontal Stabilizer Actuator - CANCELLED","slug":"ad-a320-178-amdt-1-trimmable-horizontal-stabilizer-actuator-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75482,"registerId":"commonwealth-F2008L03738-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus Industrie A319, A320 and A321 Ser","sectionType":"division","heading":"Airbus Industrie A319, A320 and A321 Series Aeroplanes","content":"### Airbus Industrie A319, A320 and A321 Series Aeroplanes\n\n| AD/A320/178 Amdt 1 | Trimmable Horizontal Stabilizer Actuator | 11/2008 |\n| ------------------ | ---------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                |\n| ------------ | ------------------------------------------------------------------------- |\n|              | This AD is cancelled on 23 October 2008.                                  |\n| Background:  | The requirements detailed in this AD have been superseded by AD/A320/226. |\n\n![](image.001.png)\n\nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n8 September 2008","sortOrder":0},{"sectionNumber":"AD/A320/178 Amdt 1","sectionType":"part","heading":"AD/A320/178 Amdt 1","content":"## AD/A320/178 Amdt 1","sortOrder":1},{"sectionNumber":"Trimmable Horizontal Stabilizer Actuator","sectionType":"part","heading":"Trimmable Horizontal Stabilizer Actuator","content":"## Trimmable Horizontal Stabilizer Actuator","sortOrder":2},{"sectionNumber":"11/2008","sectionType":"part","heading":"11/2008","content":"## 11/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1741},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"Originally contained substantive airworthiness requirements mandating specific maintenance actions on stabilizer actuators. This amendment transforms the instrument into a pure cancellation notice, relocating all technical requirements to AD/A320/226."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation sections","No conditional logic, exceptions, or procedural steps","Minimal cross-referencing (only noting supersession by AD/A320/226)"],"plain_english_summary":"**This document formally cancels a previous aircraft safety rule.**\n\nThis instrument revokes an earlier Airworthiness Directive (a mandatory safety notice for aircraft) that applied to **Airbus A319, A320, and A321** aeroplanes.\n\n**What it originally covered:**\nThe previous rule required maintenance or inspection of the **Trimmable Horizontal Stabilizer Actuator** — a critical component that controls the pitch of the aircraft (nose up/down movement).\n\n**What this does:**\nIt **cancels those requirements** effective 23 October 2008. \n\n**Why it matters:**\nThe safety requirements haven't been removed; they've simply been consolidated into a newer directive (**AD/A320/226**). This document prevents confusion by officially terminating the old rule so operators know to follow the new one instead."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-178-amdt-1-trimmable-horizontal-stabilizer-actuator-cancelled","history":"/api/acts/ad-a320-178-amdt-1-trimmable-horizontal-stabilizer-actuator-cancelled/history","analysis":"/api/acts/ad-a320-178-amdt-1-trimmable-horizontal-stabilizer-actuator-cancelled/analysis","conflicts":"/api/acts/ad-a320-178-amdt-1-trimmable-horizontal-stabilizer-actuator-cancelled/conflicts","importantCases":"/api/acts/ad-a320-178-amdt-1-trimmable-horizontal-stabilizer-actuator-cancelled/important-cases","documents":"/api/acts/ad-a320-178-amdt-1-trimmable-horizontal-stabilizer-actuator-cancelled/documents"}}