{"id":"F2006B07218","name":"AD/SWSA226/75 - Cockpit Floor FOD Barriers","slug":"ad-swsa226-75-cockpit-floor-fod-barriers","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49004,"registerId":"commonwealth-F2006B07218-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SWSA226/75 - Cockpit Floor FOD Barriers","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)  Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes\n\n \n\nAD/SWSA226/75 Cockpit Floor FOD Barriers 3/96\n\nApplicability: All serial numbers SA226-T, SA226-T(B), SA226-AT, SA226-TC, SA227-AT, SA227-AC, SA227-BC, SA227-TT; SA227-CC S/n CC784 and CC790 to CC863, and SA227-DC S/n DC784 and DC790 to DC863.\n\n \n\nRequirement: Action in accordance with either Fairchild SBs 226-53-012, 227-53-005, or CC7-53- 002 as applicable.\n\n \n\nNote: FAA AD 95-24-11 refers.\n\n \n\nCompliance: Within 600 hours time in service after 29 February 1996.\n\n \n\nBackground:  This Directive requires the installation of foreign object damage (FOD) barriers in the floorboards of the cockpit. This action follows incidents where objects fell through openings in the cockpit floor and jammed the elevator and the yoke.\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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive makes mandatory the installation approach described in the referenced Fairchild service bulletins for the enumerated aircraft and serial numbers; it does not broaden applicability beyond those models/serial ranges and aligns with the cited FAA AD (see Applicability, Requirement, Note, Compliance)."},"complexity_factors":["Narrow, specific applicability limited to particular SA226/SA227 models and enumerated serial-number ranges (Applicability).","Mandates action by reference to external technical documents (Fairchild SBs 226-53-012, 227-53-005, CC7-53-002) rather than containing full installation instructions (Requirement).","Fixed compliance window tied to flight hours after a calendar date (600 hours after 29 February 1996) requiring operators to track time-in-service (Compliance).","Cross-reference to an FAA AD (FAA AD 95-24-11) introduces an external regulatory linkage (Note).","Safety rationale stems from specific incidents (objects jamming elevator and yoke), which narrows the remedial focus but creates a critical safety implementation task (Background)."],"plain_english_summary":"This Airworthiness Directive mandates fitting foreign-object-damage (FOD) barriers into the cockpit floorboards of specified Fairchild (Swearingen) SA226 and SA227 aircraft, using the applicable Fairchild service bulletin procedures. It applies to only the listed serial-number ranges and must be carried out within 600 hours time-in-service after 29 February 1996. The measure responds to recorded incidents where items passed through floor openings and jammed the elevator and yoke."},"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 cockpit floor barriers."},"complexity_factors":["Single, specific mechanical modification requirement","Only 3 defined aircraft model categories with explicit serial number ranges","Simple alternative compliance paths (3 manufacturer service bulletins)","Single deadline (600 hours time in service from specified date)","No nested exceptions, conditional logic, or cross-references to other legislation","Background explanation included in the instrument itself","Total length under 200 words"],"plain_english_summary":"CASA requires owners/operators of specified Fairchild (Swearingen) Metroliner/Merlin twin‑turboprops to install cockpit‑floor protective barriers per manufacturer service bulletins within 600 flight hours after 29 Feb 1996. The barriers stop loose items falling through floor gaps and jamming elevator or yoke controls — a proven hazard that can cause loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-75-cockpit-floor-fod-barriers","history":"/api/acts/ad-swsa226-75-cockpit-floor-fod-barriers/history","analysis":"/api/acts/ad-swsa226-75-cockpit-floor-fod-barriers/analysis","conflicts":"/api/acts/ad-swsa226-75-cockpit-floor-fod-barriers/conflicts","importantCases":"/api/acts/ad-swsa226-75-cockpit-floor-fod-barriers/important-cases","documents":"/api/acts/ad-swsa226-75-cockpit-floor-fod-barriers/documents"}}