{"id":"F2006B06976","name":"AD/SF340/47 - Flap Fittings at WS 123.38","slug":"ad-sf340-47-flap-fittings-at-ws-123-38","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114891,"registerId":"commonwealth-F2006B06976-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SF340/47 - Flap Fittings at WS 123.38","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  SAAB SF340 Series Aeroplanes\n\n \n\nAD/SF340/47 Flap Fittings at WS 123.38 7/95\n\nApplicability: Model SF 340A with serial numbers 004 through 159, and Model SF 340B with serial numbers 160 through 379.\n\n \n\nRequirement: Action in accordance with SAAB Service Bulletin 340-57-027.\n\n \n\nNote: LFV AD 1-072 refers.\n\n \n\nCompliance: As specified in the Requirement Document with the initial inspection to be performed within 800 hours time in service after 22 June 1995.\n\n \n\nBackground: The LFV received a report of a jammed flap assembly. The rear lug of one of the flap fittings at WS 123.38 was found broken and the bushing in the lug was worn. It was determined that an unfavourable tolerance combination of the parts in this case had resulted in high bearing stress on the bushing.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating inspection of flap fittings."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 defined applicability criteria (serial number ranges)","Single requirement referencing an external technical document (SAAB Service Bulletin)","No nested conditional logic or exceptions","No cross-references to other legislation beyond a note about a related Swedish directive","Straightforward compliance deadline (800 hours time in service after fixed date)"],"plain_english_summary":"This CASA Airworthiness Directive mandates inspection and, if needed, repair of the flap fittings at WS 123.38 on SAAB SF340A (serials 004–159) and SF340B (serials 160–379). Prompted by a Swedish report of a broken fitting and worn bushing that jammed flaps, it requires operators to follow SAAB Service Bulletin 340-57-027, with the first inspection within 800 flight hours after 22 June 1995."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD enforces inspection and corrective action for a specific flap fitting issue on defined serial numbers, consistent with the stated airworthiness objective in the Background. It does not expand obligations beyond requiring actions per the referenced SAAB service bulletin and a specified initial compliance interval."},"complexity_factors":["Narrow applicability to specific models and serial-number ranges (Applicability).","Mandates compliance with an external manufacturer's service bulletin rather than prescribing detailed steps in the AD itself (Requirement).","Compliance measured in flight hours with a fixed initial window (800 hours after 22 June 1995), creating an operational scheduling constraint (Compliance).","Safety‑critical technical inspection that may require parts replacement or repair, imposing maintenance cost and downtime on operators (Requirement; Background).","Relies on factual findings about part tolerances and wear that drive the inspection focus (Background).","Low regulatory ambiguity — AD text is short and prescriptive, but the exact corrective actions depend on the service bulletin content (Requirement).","Cross-reference to foreign authority (LFV) noted, indicating coordination with overseas certification findings (Note)."],"plain_english_summary":"This Airworthiness Directive requires operators of certain SAAB SF340A (s/n 004–159) and SF340B (s/n 160–379) aeroplanes to carry out inspection and corrective action on the flap fittings at wing station WS 123.38, following SAAB Service Bulletin 340-57-027, with the first inspection within 800 hours time in service after 22 June 1995. It targets worn bushings and broken rear lugs that have caused flap jams and so matters for flight safety and continued aircraft dispatchability."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sf340-47-flap-fittings-at-ws-123-38","history":"/api/acts/ad-sf340-47-flap-fittings-at-ws-123-38/history","analysis":"/api/acts/ad-sf340-47-flap-fittings-at-ws-123-38/analysis","conflicts":"/api/acts/ad-sf340-47-flap-fittings-at-ws-123-38/conflicts","importantCases":"/api/acts/ad-sf340-47-flap-fittings-at-ws-123-38/important-cases","documents":"/api/acts/ad-sf340-47-flap-fittings-at-ws-123-38/documents"}}