{"id":"F2006B04613","name":"AD/BELL 222/22 - Flapping Bearing-to-Yoke Attachment Bolts","slug":"ad-bell-222-22-flapping-bearing-to-yoke-attachment-bolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44365,"registerId":"commonwealth-F2006B04613-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 222/22 - Flapping Bearing-to-Yoke Attachment Bolts","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)  \nBell Helicopter Textron Canada (BHTC) 222 Series Helicopters\n\nAD/BELL 222/22 Flapping Bearing-to-Yoke Attachment Bolts 7/99\n\nApplicability: Model 222, serial numbers 47006 through 47089; Model 222B, serial numbers 47131 through 47156; and Model 222U, serial numbers 47501 through 47574.\n\nRequirement: Perform an initial inspection of the flapping bearing-to-yoke attachment bolts in accordance with Part I of BHTC Alert Service Bulletin 222-98-83 or 222U-98-54, as applicable; both bulletins dated 12 October 1998.\n\nReplace bolts that show evidence of thread damage, shank wear, or corrosion.\n\nNote: Transport Canada AD CF-99-12 refers.\n\nCompliance: At the next scheduled 150-hour inspection after 15 July 1999, but not later than 31 December 1999; unless already accomplished.\n\nNote: Repetitive inspections at 1,200 hour intervals will be included in a forthcoming revision to the Maintenance Manual.\n\nThis Airworthiness Directive becomes effective on 15 July 1999.\n\nBackground: Transport Canada received a report of a post-flight inspection finding that one of the four flapping bearing-to-yoke attachment bolts had fractured.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No. The directive imposes an inspection-and-replace requirement limited to the listed helicopters in response to a reported fractured bolt. It sets a one‑time compliance deadline and indicates future recurring inspections; it does not broaden applicability or add discretionary new powers beyond requiring the specified maintenance actions (Applicability; Requirement; Compliance; Note; Background)."},"complexity_factors":["Narrow applicability: applies only to specific serial-number ranges for Model 222, 222B and 222U (Applicability).","Clear required action: single initial inspection and replacement if defects found, following a named Alert Service Bulletin dated 12 October 1998 (Requirement).","Fixed compliance deadline tied to scheduled maintenance: next scheduled 150-hour inspection after 15 July 1999 but no later than 31 December 1999 (Compliance).","Future recurring duty: repetitive inspections at 1,200-hour intervals to be added to the Maintenance Manual (Note), creating ongoing maintenance workload and record-keeping needs.","Operational impact: inspection/replacement can be scheduled into existing maintenance but imposes parts cost and possible downtime on operators (Requirement; Compliance).","Regulatory linkage: refers to Transport Canada AD CF-99-12 and relies on manufacturer service bulletin for procedures, increasing dependence on external documents (Note; Requirement).","Risk-driven scope: directive follows a reported bolt fracture, so scope and urgency derive from a specific safety report (Background)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Bell 222, 222B and 222U helicopters (listed serial numbers) to inspect the flapping bearing‑to‑yoke attachment bolts per the Bell Alert Service Bulletin dated 12 October 1998 and to replace any bolts showing thread damage, shank wear or corrosion. CASA issued the directive after a reported bolt fracture; operators must meet the inspection deadline at the next scheduled 150‑hour check (by 31 December 1999) and will face added recurring inspections at 1,200‑hour intervals."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive (AD) — a targeted safety instrument that addresses a specific mechanical defect discovered in service. It has not expanded beyond its original purpose of mandating inspection and replacement of defective bolts on affected helicopter models."},"complexity_factors":["Single, specific mechanical component addressed (flapping bearing-to-yoke attachment bolts)","Clear applicability limited to three specific helicopter models with defined serial number ranges","One primary action required (visual inspection per referenced service bulletin)","Simple compliance deadline structure (next 150-hour inspection window with hard cap date)","Only one conditional exception ('unless already accomplished')","No defined terms section, no cross-references to other legislation beyond the referenced service bulletins and Canadian AD","Total length: approximately 200 words"],"plain_english_summary":"This emergency safety order requires owners/operators of specified Bell 222, 222B, and 222U helicopters to inspect four bolts that attach rotor blades to the yoke at the next routine maintenance check after 15 July 1999 and before 31 December 1999, and replace any showing thread damage, wear, or rust. It follows a discovered in‑flight bolt failure that could allow blade detachment; inspections will later be required every 1,200 flight hours."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-222-22-flapping-bearing-to-yoke-attachment-bolts","history":"/api/acts/ad-bell-222-22-flapping-bearing-to-yoke-attachment-bolts/history","analysis":"/api/acts/ad-bell-222-22-flapping-bearing-to-yoke-attachment-bolts/analysis","conflicts":"/api/acts/ad-bell-222-22-flapping-bearing-to-yoke-attachment-bolts/conflicts","importantCases":"/api/acts/ad-bell-222-22-flapping-bearing-to-yoke-attachment-bolts/important-cases","documents":"/api/acts/ad-bell-222-22-flapping-bearing-to-yoke-attachment-bolts/documents"}}