{"id":"F2006B06994","name":"AD/SF340/65 Amdt 1 - Brake Installation Combination","slug":"ad-sf340-65-amdt-1-brake-installation-combination","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48605,"registerId":"commonwealth-F2006B06994-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SF340/65 Amdt 1 - Brake Installation Combination","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/SF340/65\n\nAmdt 1\n\n  \nBrake Installation Combination 13/99\n\nApplicability: Model SF 340A with serial numbers 004 through 159, and Model 340B with serial numbers 160 through 459, equipped with ABSC Brake Stack or Hitco Technologies, Inc. Brake Stack Kit, FAA STC No. ST00341LA.\n\nNote: Hitco Industries, Inc. Brake Stack Kit, part number 3001049, FAA STC No. ST00341LA applies only to ABSC brake assemblies 5012589-1 or 5012589-2.\n\nRequirement: Action in accordance with SAAB Aircraft Service Bulletin SAAB 340-32-114.\n\nNote: LFV AD 1-139 R1 refers.\n\nCompliance: Before 29 February 2000, unless already accomplished.\n\nThis Amendment becomes effective on 30 December 1999.\n\nBackground: The manufacturer has determined that restrictions regarding the installation combination of the brakes is necessary in order to avoid an unbalanced aircraft handling situation and degradation of brake performance. Only symmetrical brake installation configurations are permitted.\n\nAmendment 1 is issued in response to a new LBA AD which expands applicability. The original issue of this Airworthiness Directive became effective on 16 July 1998.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The original 1998 directive has been expanded via Amendment 1 to cover additional aircraft. The amendment explicitly states it was issued in response to a new German LBA AD that 'expands applicability' beyond the original scope."},"complexity_factors":["Single, specific technical requirement (follow one service bulletin)","Limited applicability — only 2 aircraft models with specific serial number ranges and specific brake equipment","No nested exceptions or conditional logic","Only 2 defined technical terms in notes (STC — Supplemental Type Certificate, LFV AD — Swedish aviation authority airworthiness directive)","Clear, fixed compliance deadline","Straightforward amendment purpose (expanded applicability from original 1998 directive)"],"plain_english_summary":"This CASA Airworthiness Directive mandates that operators of Saab SF340A (S/N 004–159) and SF340B (S/N 160–459) aircraft fitted with ABSC or Hitco brake stacks follow SAAB service bulletin 340-32-114 to ensure symmetrical brake installation. It addresses dangerous handling and reduced braking caused by mixing brake types and requires compliance by 29 February 2000 (unless already done); the amendment expands coverage after a related German LBA order."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 1 expanded the AD's applicability in response to a new LBA AD; the original AD (effective 16 July 1998) had narrower applicability (Amendment 1)."},"complexity_factors":["Narrow technical applicability: specific airframe serial numbers and specified brake stack kits (Applicability).","Cross-reference to external technical document: mandatory compliance with Saab Service Bulletin SAAB 340-32-114 (Requirement).","Regulatory deadline: defined compliance date creates time pressure for affected operators (Compliance: Before 29 February 2000).","Parts/STC specificity: Hitco kit applicability tied to particular ABSC assembly part numbers and FAA STC No. ST00341LA (Note).","Safety-critical operational constraint: requires symmetrical brake installation to prevent handling/braking degradation (Background).","Amendment mechanism: scope change introduced by a later authority (LBA AD) expanding applicability (Amendment 1)."],"plain_english_summary":"**Summary:**\n\nRequires certain SAAB SF340A/B aeroplanes (specific serial ranges) fitted with ABSC or Hitco brake stack kits to follow Saab Service Bulletin SAAB 340-32-114 by 29 February 2000. CASA issues the directive so operators/owners and maintenance organisations must inspect/modify brakes to ensure only symmetrical installations are used to avoid unbalanced handling and degraded braking (Background; Requirement; Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sf340-65-amdt-1-brake-installation-combination","history":"/api/acts/ad-sf340-65-amdt-1-brake-installation-combination/history","analysis":"/api/acts/ad-sf340-65-amdt-1-brake-installation-combination/analysis","conflicts":"/api/acts/ad-sf340-65-amdt-1-brake-installation-combination/conflicts","importantCases":"/api/acts/ad-sf340-65-amdt-1-brake-installation-combination/important-cases","documents":"/api/acts/ad-sf340-65-amdt-1-brake-installation-combination/documents"}}