{"id":"F2006B06975","name":"AD/SF340/46 Amdt 1 - Flight Idle Stop","slug":"ad-sf340-46-amdt-1-flight-idle-stop","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114890,"registerId":"commonwealth-F2006B06975-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SF340/46 Amdt 1 - Flight Idle Stop","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nSAAB SF340 Series Aeroplanes\n\nAD/SF340/46\n\nAmdt 1\n\n  \nFlight Idle Stop 12/96\n\nApplicability: All SAAB SF 340A series aircraft S/No 004 through 159 and SF 340B series aircraft S/No 160 through 379.\n\nRequirement: 1. Unless previously carried out, action in accordance with SAAB SB SF340-76-034.\n\nNote 1: Swedish LFV AD 1-067 refers.\n\n2. Action in accordance with SAAB SB SF340-76-032. Note 2: SAAB SB SF340-76-031 and SF340-32-100 refer. Note 3: Swedish LFV AD 1-070 refers.\n\nCompliance: 1. Prior to 31 May 1995.\n\n2. Prior to 30 June 1997.\n\nThis amendment is effective from 7 November 1996.\n\nBackground: The manufacturer has advised that power levers have been selected below the flight idle stop position whilst the aircraft was airborne. This has resulted in an aircraft accident and several other incidents of uncontrolled aircraft flight.\n\nAmendment 1 defers the compliance date to 30 June 1997 following advice from the Swedish CAA that due to a lack of modified power quadrants compliance by 31 December 96 could not be achieved.\n\nThe original issue of this Airworthiness Directive became effective on 17 May 1995.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD remains focused on its original purpose: mandating safety modifications to power levers on SAAB SF340 aircraft to prevent in-flight engine shutdowns. Amendment 1 does not expand the scope — it merely adjusts a compliance timeline based on practical supply constraints."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 substantive requirements with clear compliance dates","Minimal defined terms (only standard aviation abbreviations like 'S/No' for serial number)","No nested conditional logic or exceptions","Simple cross-references to manufacturer service bulletins (SB SF340-76-034, SB SF340-76-032) and Swedish authority documents, but these are external references rather than internal legislative complexity","Single amendment with straightforward purpose (date extension)"],"plain_english_summary":"This CASA Airworthiness Directive requires SAAB SF340 operators to fit power‑lever modifications to stop accidental in‑flight selection below flight idle — a hazard that led to one accident and several near‑misses — and applies to SF340A S/N 004–159 and SF340B S/N 160–379.\n\nAmendment 1 simply extends the deadline for the second modification to 30 June 1997 because parts were delayed."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"Amendment 1 does not alter which aircraft or which modifications are required; it defers a compliance deadline to 30 June 1997 due to lack of available modified power quadrants (Background). The substantive requirements and applicability remain unchanged; only the timing of compliance was adjusted."},"complexity_factors":["Multiple required actions cross-referenced to external manufacturer service bulletins (SAAB SB SF340-76-034 and SF340-76-032) and additional SBs referenced in notes (Requirement / Notes).","Applicability limited by serial-number ranges across two sub-models (SF340A S/No 004–159; SF340B S/No 160–379), adding record checks for operators (Applicability).","Two separate compliance deadlines for different actions, and an amendment that defers a compliance date, creating scheduling and parts-planning complexity (Compliance; Background).","References to foreign authority ADs (Swedish LFV ADs) mean implementers must consult additional non-CASA material for detail (Notes).","Effective date and amendment timing require operators to reconcile prior compliance status with the amended deadline (Effective date / Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of specified SAAB SF340A and SF340B aeroplanes to carry out modifications and inspections per SAAB service bulletins to prevent selection of power levers below the flight idle stop in flight. It sets firm compliance deadlines and, by Amendment 1, delays a compliance date to 30 June 1997 because modified power quadrants were unavailable. The directive targets aircraft owners/operators of the listed serial numbers and matters because the work addresses a cause of at least one accident and several incidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sf340-46-amdt-1-flight-idle-stop","history":"/api/acts/ad-sf340-46-amdt-1-flight-idle-stop/history","analysis":"/api/acts/ad-sf340-46-amdt-1-flight-idle-stop/analysis","conflicts":"/api/acts/ad-sf340-46-amdt-1-flight-idle-stop/conflicts","importantCases":"/api/acts/ad-sf340-46-amdt-1-flight-idle-stop/important-cases","documents":"/api/acts/ad-sf340-46-amdt-1-flight-idle-stop/documents"}}