{"id":"F2008L01761","name":"AD/BEECH 90/12 - Ammeter Lead Circuit Protection - CANCELLED","slug":"ad-beech-90-12-ammeter-lead-circuit-protection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":73883,"registerId":"commonwealth-F2008L01761-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Beechcraft 90 and 65-90 (King Air) Serie","sectionType":"division","heading":"Beechcraft 90 and 65-90 (King Air) Series Aeroplanes","content":"### Beechcraft 90 and 65-90 (King Air) Series Aeroplanes\n\n| AD/BEECH 90/12 | Ammeter Lead Circuit Protection | 7/2008 |\n| -------------- | ------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                              |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 3 July 2008.                                                                                                                                                                                                                                                                    |\n| Background:  | This unique Australian AD, raised in 1967, required a modification by installation of a suitable circuit protection device in each ammeter lead, near the shunts.Compliance was forthwith.As all affected aircraft would have been modified by now, it is considered that the AD is no longer required. |\n\n![](image.001.png)\n\nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n22 May 2008","sortOrder":0},{"sectionNumber":"AD/BEECH 90/12","sectionType":"part","heading":"AD/BEECH 90/12","content":"## AD/BEECH 90/12","sortOrder":1},{"sectionNumber":"Ammeter Lead Circuit Protection","sectionType":"part","heading":"Ammeter Lead Circuit Protection","content":"## Ammeter Lead Circuit Protection","sortOrder":2},{"sectionNumber":"7/2008","sectionType":"part","heading":"7/2008","content":"## 7/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1232},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument terminates the previous airworthiness directive without expanding or altering its scope. It simply concludes the regulatory requirement because its safety purpose has been achieved across the fleet."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No conditional logic, exceptions, or cross-references","Straightforward historical background with clear rationale"],"plain_english_summary":"This document cancels an old aviation safety rule that required certain Beechcraft King Air aircraft to have circuit protection installed on their ammeter (electrical current measuring) leads.\n\n**What it does**\n- Formally cancels Airworthiness Directive AD/BEECH 90/12, effective 3 July 2008\n- Removes a technical requirement that had existed since 1967\n\n**Who it affected**\n- Owners and operators of Beechcraft 90 and 65-90 (King Air) series aeroplanes\n\n**Why it matters**\nThe original rule required immediate installation of safety devices to prevent electrical faults in the ammeter wiring. Because this work was required immediately from 1967, CASA (the Civil Aviation Safety Authority) considers that all affected aircraft have been modified by now. This cancellation is regulatory housekeeping to remove obsolete requirements from the rulebook."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-90-12-ammeter-lead-circuit-protection-cancelled","history":"/api/acts/ad-beech-90-12-ammeter-lead-circuit-protection-cancelled/history","analysis":"/api/acts/ad-beech-90-12-ammeter-lead-circuit-protection-cancelled/analysis","conflicts":"/api/acts/ad-beech-90-12-ammeter-lead-circuit-protection-cancelled/conflicts","importantCases":"/api/acts/ad-beech-90-12-ammeter-lead-circuit-protection-cancelled/important-cases","documents":"/api/acts/ad-beech-90-12-ammeter-lead-circuit-protection-cancelled/documents"}}