{"id":"F2006B07016","name":"AD/SF340/85 - Propeller Remote Controlled Circuit Breakers","slug":"ad-sf340-85-propeller-remote-controlled-circuit-breakers","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48671,"registerId":"commonwealth-F2006B07016-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nSaab SF340 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/SF340/85 Propeller Remote Controlled ","sectionType":"part","heading":"AD/SF340/85 Propeller Remote Controlled Circuit Breakers 5/2002","content":"# AD/SF340/85 Propeller Remote Controlled Circuit Breakers 5/2002\n\nApplicability: Model 340B aeroplanes equipped with Hamilton Sunstrand (Hamilton Standard) propellers.\n\nRequirement: If not previously accomplished, inspect Remote Controlled Circuit Breakers (RCCB) 29KFC and 30KFC to ensure that Part Number (P/N) M83383-01-09 (50 Amp) circuit breakers are installed. If an incorrect P/N RCCB is installed, replace the RCCB with a P/N M83383-01-09 circuit breaker. The above actions are to be accomplished in accordance with Saab Aircraft AB Service Bulletin 340-61-038 dated 30 January 2002.\n\nNote: LFV AD 1-172 refers.\n\nCompliance: Before 31 July 2002.\n\nThis Airworthiness Directive becomes effective on 16 May 2002.\n\nBackground: All 340B aeroplanes equipped with Hamilton Sunstrand (Hamilton Standard) propellers have 50 Amp RCCBs installed during production, but the IPC refers to 35 Amp RCCB which are specific to Dowty propellers. The inspection is required to ensure the correct RCCB is installed, thus providing the correct circuit protection for the propeller feather pump system on aeroplanes equipped with Hamilton Sunstrand (Hamilton Standard) propellers.\n\n![Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 27 March 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 24 April 2002.","sortOrder":1}],"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":2,"scope_assessment":{"changed":false,"description":"No change in scope from the instrument's stated purpose: it applies only to Saab 340B aeroplanes fitted with Hamilton Sunstrand propellers and mandates inspection and replacement of specific RCCBs as necessary, to be accomplished per the cited Saab Service Bulletin by the stated deadline."},"complexity_factors":["Narrow applicability: Model 340B aeroplanes with Hamilton Sunstrand propellers only (Applicability).","Single, discrete technical action: inspect two specific RCCBs and replace if incorrect (Requirement).","Firm compliance deadline: must be done before 31 July 2002 (Compliance).","Reliance on manufacturer service bulletin for procedure and conformity (Requirement references Saab SB 340-61-038 dated 30 Jan 2002).","Specific part-number control: mandate to install P/N M83383-01-09 (50 Amp) circuit breakers (Requirement).","Cross-reference to another authority AD (LFV AD 1-172) increases traceability needs (Note).","Legal basis identified: issued under subregulation 39.1(1) of CAR 1998 (preamble/signature)."],"plain_english_summary":"This Airworthiness Directive requires operators of Saab 340B aeroplanes fitted with Hamilton Sunstrand (Hamilton Standard) propellers to inspect RCCBs 29KFC and 30KFC and, if they are not Part Number M83383-01-09 (50 Amp), replace them by 31 July 2002. The stated purpose is to ensure the propeller feather pump system has the correct 50 Amp circuit protection rather than the 35 Amp units used for Dowty propellers; compliance must follow Saab Service Bulletin 340-61-038 (30 Jan 2002)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific parts mismatch on a specific aircraft configuration. It has not expanded beyond the original safety issue of ensuring correct circuit breaker amperage for the propeller feather pump system."},"complexity_factors":["Single, specific aircraft model and propeller combination targeted","Only two specific part numbers to check (29KFC and 30KFC)","Straightforward binary compliance: check if correct, replace if wrong","Single compliance deadline with no conditional timing","No nested exceptions or alternative compliance methods","Clear cross-reference to only one external technical document (Saab Service Bulletin)","Minimal defined terms (only 'RCCB' and 'P/N' abbreviations used, both obvious from context)"],"plain_english_summary":"This AD requires operators of Saab 340B aeroplanes with Hamilton Sundstrand propellers to inspect two Remote Controlled Circuit Breakers (RCCBs) and replace any incorrectly fitted 35 A units with the correct 50 A part, per Saab SB 340‑61‑038. The check must be completed by 31 July 2002 because incorrect breakers could starve the propeller feathering system of power, creating a serious flight-safety hazard."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sf340-85-propeller-remote-controlled-circuit-breakers","history":"/api/acts/ad-sf340-85-propeller-remote-controlled-circuit-breakers/history","analysis":"/api/acts/ad-sf340-85-propeller-remote-controlled-circuit-breakers/analysis","conflicts":"/api/acts/ad-sf340-85-propeller-remote-controlled-circuit-breakers/conflicts","importantCases":"/api/acts/ad-sf340-85-propeller-remote-controlled-circuit-breakers/important-cases","documents":"/api/acts/ad-sf340-85-propeller-remote-controlled-circuit-breakers/documents"}}