{"id":"F2009L03926","name":"AD/BELL 412/21 - Fuel Cell Interconnect Tube - CANCELLED","slug":"ad-bell-412-21-fuel-cell-interconnect-tube-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":81313,"registerId":"commonwealth-F2009L03926-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron 412 Series Helic","sectionType":"division","heading":"Bell Helicopter Textron 412 Series Helicopters","content":"### Bell Helicopter Textron 412 Series Helicopters\n\n| AD/BELL 412/21 | Fuel Cell Interconnect Tube | 12/2009 |\n| -------------- | --------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                             |\n| ------------ | -------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 19 November 2009.                                                                                              |\n| Background:  | This unique Australian AD specified once-only action in accordance with Alert SB 412-88-40 by July 1988. The AD is no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n30 September 2009","sortOrder":0},{"sectionNumber":"AD/BELL 412/21","sectionType":"part","heading":"AD/BELL 412/21","content":"## AD/BELL 412/21","sortOrder":1},{"sectionNumber":"Fuel Cell Interconnect Tube","sectionType":"part","heading":"Fuel Cell Interconnect Tube","content":"## Fuel Cell Interconnect Tube","sortOrder":2},{"sectionNumber":"12/2009","sectionType":"part","heading":"12/2009","content":"## 12/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2744},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument achieves its sole stated purpose of cancelling the previous Airworthiness Directive. It does not expand, restrict, or alter the scope beyond this straightforward cancellation."},"complexity_factors":["Single operative provision (cancellation) with no conditions","No defined terms or interpretive provisions","No cross-references to other legislation","No exceptions, exemptions, or procedural steps","Extremely brief text consisting solely of cancellation notice and historical context"],"plain_english_summary":"This document officially **cancels** (withdraws) Airworthiness Directive (AD) number BELL 412/21 for Bell 412 helicopters.\n\n**What the old rule required:** The original directive mandated a one-time safety action on the fuel cell interconnect tube by July 1988, following a specific technical service bulletin (Alert SB 412-88-40).\n\n**What this document does:** It formally cancels that old directive effective 19 November 2009 because the deadline for the required action passed over two decades prior and the rule is no longer needed.\n\n**Who it affects:** Owners and operators of Bell Helicopter Textron 412 series aircraft.\n\n**Why it matters:** This cleans up the aviation safety regulations by removing an obsolete requirement that has already been complied with (or superseded by time)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-412-21-fuel-cell-interconnect-tube-cancelled","history":"/api/acts/ad-bell-412-21-fuel-cell-interconnect-tube-cancelled/history","analysis":"/api/acts/ad-bell-412-21-fuel-cell-interconnect-tube-cancelled/analysis","conflicts":"/api/acts/ad-bell-412-21-fuel-cell-interconnect-tube-cancelled/conflicts","importantCases":"/api/acts/ad-bell-412-21-fuel-cell-interconnect-tube-cancelled/important-cases","documents":"/api/acts/ad-bell-412-21-fuel-cell-interconnect-tube-cancelled/documents"}}