{"id":"F2006B06978","name":"AD/SF340/49 Amdt 1 - Brakes","slug":"ad-sf340-49-amdt-1-brakes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114893,"registerId":"commonwealth-F2006B06978-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SF340/49 Amdt 1 - Brakes","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/SF340/49\n\nAmdt 1\n\n  \nBrakes 7/97\n\nApplicability: Model SF 340A with serial numbers 004 through 159\\. Model 340B with serial numbers 160 and subsequent.\n\nRequirement: Action in accordance with attachment 1 and 2 of SAAB Service Bulletin 340-32-105.\n\nNote 1: Incorporation of SAAB Service Bulletin SAAB 340-32-110 with attachments 1 and 2, allow for removal of the heat shield.\n\nNote 2: LFV AD 1-075 R1 refers.\n\nCompliance: As specified in the Requirement Document with revised initial inspection times for attachments 1 and 2, of 10 November 1995 and 14 November 1995, respectively; and thereafter in accordance with the Requirement document until SAAB Service Bulletin SAAB 340-32-106 is accomplished.\n\nThe compliance of the initial issue of this Directive remains unchanged for the initial inspection requirement. Additional information is added to the compliance statement by this issue.\n\nThis Amendment becomes effective on 19 June 1997.\n\nBackground: Reports were received of brake stationary disc failures. These failures further resulted in wheel collapse, a brake fire, and the inability to retract the main landing gear.\n\nAmendment 1 is issued in response to a revision of the related LFV AD which introduces SB 340-32-110 to allow for removal of the brake heat shield.\n\nThe original issue of this airworthiness directive became effective on 10 November 1995.","sortOrder":0}],"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose — addressing brake stationary disc failures in SAAB SF340 aircraft. The amendment adds an alternative compliance path (allowing heat shield removal via SB 340-32-110) but does not expand the applicability to other aircraft systems or models. The scope is unchanged from the original 1995 directive."},"complexity_factors":["Short, single-purpose document (approximately 250 words)","Only 2 defined applicability criteria (serial number ranges)","Cross-references to external documents: SAAB Service Bulletins 340-32-105, 340-32-110, and 340-32-106, plus Swedish LFV AD 1-075 R1","Conditional compliance logic: different inspection dates for attachments 1 and 2, with ongoing compliance until a future service bulletin is accomplished","Nested conditions: removal of heat shield permitted only if SB 340-32-110 is incorporated"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspections and maintenance of brake systems on specified SAAB SF340A (serials 004–159) and SF340B (160+) aeroplanes operated in Australia to prevent brake failures that have caused wheel collapse, fires, and gear problems. Amendment 1 adds an approved service option permitting removal of a brake heat shield once an alternative safety modification is installed."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 does not broaden the serial-number applicability but modifies compliance mechanics: it revises initial inspection dates and explicitly permits removal of the brake heat shield via SAAB SB 340-32-110, and adds clarification to the compliance statement while keeping the original initial inspection requirement unchanged (Compliance; Note 1; Background)."},"complexity_factors":["Narrow applicability by specific airframe serial numbers (Applicability) increases administrative tracking burden for operators.","Multiple external documents referenced: SAAB Service Bulletins 340-32-105, 340-32-110, and eventual 340-32-106 (Requirement; Note 1; Compliance).","Revised initial inspection dates and ongoing compliance until a later SB is accomplished create timeline and recordkeeping complexity (Compliance).","Technical subject matter (brake stationary disc failures with risks of wheel collapse, fire, gear retraction failure) requires specialised maintenance skills and parts (Background).","Amendment permits an alternative action (removal of heat shield) which introduces optional compliance paths to be evaluated by operators and maintainers (Note 1).","Cross-reference to a foreign authority directive (LFV AD 1-075 R1) adds another compliance source to monitor (Note 2)."],"plain_english_summary":"Requires inspections and corrective action on SAAB SF340A/B aeroplanes with specified serial numbers to address brake stationary-disc failures, by following SAAB Service Bulletin `340-32-105` (Applicability; Requirement). Operators must perform and pay for the inspections and repairs per the service bulletins until `SB 340-32-106` is accomplished; Amendment 1 revises initial inspection dates and permits removal of the brake heat shield under `SB 340-32-110` (Compliance; Note 1)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sf340-49-amdt-1-brakes","history":"/api/acts/ad-sf340-49-amdt-1-brakes/history","analysis":"/api/acts/ad-sf340-49-amdt-1-brakes/analysis","conflicts":"/api/acts/ad-sf340-49-amdt-1-brakes/conflicts","importantCases":"/api/acts/ad-sf340-49-amdt-1-brakes/important-cases","documents":"/api/acts/ad-sf340-49-amdt-1-brakes/documents"}}