{"id":"F2006B07176","name":"AD/SWSA226/36 Amdt 2 - Elevator Return Spring And Attachment","slug":"ad-swsa226-36-amdt-2-elevator-return-spring-and-attachment","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49096,"registerId":"commonwealth-F2006B07176-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SWSA226/36 Amdt 2 - Elevator Return Spring And Attachment","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)  \nFairchild (Swearingen) SA226 and SA227 Series Aeroplanes\n\nAD/SWSA226/36\n\nAmdt 2\n\n  \nElevator Return Spring And Attachment 8/93\n\nApplicability: Model Serial Numbers\n\nSA226-AT all serial numbers\n\nSA226-TC all serial numbers\n\nSA227-AC 406,415,416, and 420 through 473\n\nSA227-AT 423 through 469\n\nRequirement: 1. Visually inspect the elevator return spring, the attachment bolts, the spacers, and the clevis for damage such as deterioration, wear, or breakage. If any damaged part is found, prior to further flight, replace with a new part and relocate the elevator return spring in accordance with the Accomplishment Instructions section of Fairchild SB 226-27-032 or Fairchild SB 227-27-002, as applicable.\n\n2. Relocate the elevator return spring in accordance with the Accomplishment Instructions section of Fairchild SB 226-27-032 or Fairchild SB 227-27-002, as applicable.\n\nNote: FAA AD 93-09-05 Amdt 39-8571 refers.\n\nCompliance: 1. Within 25 hours time in service after 22 July 1993, unless already accomplished within the last 275 hours time in service; and thereafter at intervals not to exceed 300 hours time in service, until modified in accordance with Requirement 2 of this Directive.\n\n2. Unless already accomplished, within 2,200 hours time in service after 22 July 1993.\n\nBackground: The elevator return spring and attachment bolts are prone to rapid wear during normal service. Amendment 1 reduced the inspection intervals, provided for terminating action, and extended applicability.\n\nAmendment 2 is issued in response to the referenced FAA AD which requires terminating modification action in lieu of ongoing repetitive inspections.","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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Amendment 2 shifts the regime from ongoing repetitive inspections to a required terminating modification: it retains periodic inspections until operators relocate the elevator return spring per the Fairchild service bulletin, and sets a 2,200-hour deadline for that modification. The background also records that Amendment 1 previously reduced inspection intervals and extended applicability, so the scope now includes both tighter short-term checks and a mandated modification route."},"complexity_factors":["Dual-step requirement: repetitive inspections with specific intervals plus a mandatory terminating modification (Requirement 1 and 2).","Multiple timing rules and exceptions: initial 25-hour window, exception for recent inspections within 275 hours, thereafter 300-hour intervals, and a 2,200-hour deadline for modification (Compliance).","Model/serial-number applicability limited but specific (several SA226/SA227 serial ranges) requiring operators to check fleet status (Applicability).","Operational constraint to replace any damaged part prior to further flight creates immediate grounding/routing decisions for affected aircraft (Requirement 1).","Reliance on external service bulletins for the modification procedure (Fairchild SB 226-27-032 or SB 227-27-002) increases supplier/parts/depot coordination.","Reference to FAA AD indicates cross-jurisdictional regulatory alignment and potential for differing foreign ADs to affect compliance planning (Background/Note).","Administrative burden for record-keeping to demonstrate inspection intervals and completion of terminating action."],"plain_english_summary":"This Airworthiness Directive requires operators of certain Fairchild (Swearingen) SA226 and SA227 aeroplanes to inspect the elevator return spring and its attachment hardware, replace any damaged parts before further flight, and ultimately relocate the spring using the specified Fairchild service bulletin as a terminating modification. It applies to listed serial-numbered models, imposes short, recurring inspection intervals (initial within 25 hours unless recently done, then every 300 hours) until the relocation is completed within 2,200 hours, and places the compliance cost and work on operators and maintenance organisations."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose — addressing elevator return spring wear in specific Fairchild aircraft. Amendment 2 simply updates the compliance approach to match the FAA directive, replacing repetitive inspections with a terminating modification. The scope has not expanded beyond the original safety issue."},"complexity_factors":["Single, specific mechanical component addressed (elevator return spring)","Clear two-part requirement structure (inspection + modification)","Straightforward applicability table with specific serial numbers","Simple compliance timeline (hours in service)","Only two cross-references (to FAA AD and manufacturer service bulletins)","No nested exceptions or conditional logic beyond standard 'unless already accomplished' clauses","Short document (approximately 250 words)"],"plain_english_summary":"This CASA Airworthiness Directive orders operators and maintenance organisations of certain Fairchild (Swearingen) SA226 and SA227 twin‑turboprops to inspect the elevator return spring and its attachment hardware for wear or damage, replace any damaged parts before flight, and ultimately relocate the spring per the manufacturer’s service instructions. It targets specified serial-numbered aircraft because the component’s failure could impair pitch control and threaten safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-swsa226-36-amdt-2-elevator-return-spring-and-attachment","history":"/api/acts/ad-swsa226-36-amdt-2-elevator-return-spring-and-attachment/history","analysis":"/api/acts/ad-swsa226-36-amdt-2-elevator-return-spring-and-attachment/analysis","conflicts":"/api/acts/ad-swsa226-36-amdt-2-elevator-return-spring-and-attachment/conflicts","importantCases":"/api/acts/ad-swsa226-36-amdt-2-elevator-return-spring-and-attachment/important-cases","documents":"/api/acts/ad-swsa226-36-amdt-2-elevator-return-spring-and-attachment/documents"}}