{"id":"F2007L02451","name":"AD/BELL 222/39 - Flapping Bearing-to-Yoke Attachment Bolts","slug":"ad-bell-222-39-flapping-bearing-to-yoke-attachment-bolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":67927,"registerId":"commonwealth-F2007L02451-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron Canada (BHTC) 22","sectionType":"division","heading":"Bell Helicopter Textron Canada (BHTC) 222 Series Helicopters","content":"### Bell Helicopter Textron Canada (BHTC) 222 Series Helicopters\n\n| AD/BELL 222/39 | Flapping Bearing-to-Yoke Attachment Bolts | 9/2007 |\n| -------------- | ----------------------------------------- | ------ |\n\n| Applicability: | Model 230 helicopters, serial numbers 23001 through 23038.                                                      |\n| -------------- | --------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with Transport Canada AD CF-99-13.                                                         |\n| Compliance:    | Unless the initial inspection is already accomplished, before 30 September 2007.                                |\n|                | This Airworthiness Directive becomes effective on 30 August 2007.                                               |\n| Background:    | A post-flight inspection revealed that one of the four flapping bearing-to-yoke attachment bolts had fractured. |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n11 July 2007","sortOrder":0},{"sectionNumber":"AD/BELL 222/39","sectionType":"part","heading":"AD/BELL 222/39","content":"## AD/BELL 222/39","sortOrder":1},{"sectionNumber":"Flapping Bearing-to-Yoke Attachment Bolt","sectionType":"part","heading":"Flapping Bearing-to-Yoke Attachment Bolts","content":"## Flapping Bearing-to-Yoke Attachment Bolts","sortOrder":2},{"sectionNumber":"9/2007","sectionType":"part","heading":"9/2007","content":"## 9/2007","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive with narrow, targeted scope. It addresses a specific mechanical defect in a specific aircraft model. There is no indication of scope creep; the document serves its original purpose of mandating a safety inspection/repair."},"complexity_factors":["Very short document (under 200 words of substantive content)","Only 1 defined applicability criterion (serial number range)","Single cross-reference to external Canadian directive (CF-99-13) — actual technical requirements contained there, not here","No conditional logic or nested exceptions in the directive itself","Simple compliance deadline structure (single date with one exception clause)","Minimal legislative machinery — essentially a notice adopting foreign safety standards"],"plain_english_summary":"This mandatory Airworthiness Directive requires operators of Bell Model 230 helicopters (S/N 23001–23038) to inspect or replace the bolts that attach the flapping bearing to the yoke per Transport Canada AD CF‑99‑13. Issued after a post‑flight discovery of a broken bolt, it takes effect 30 Aug 2007 with compliance required by 30 Sep 2007 to prevent possible rotor separation and catastrophic failure."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive adopts Transport Canada AD CF‑99‑13 for the specified Model 230 serial numbers without indicating any expansion or narrowing of applicability or requirements. The instrument implements the foreign AD domestically and does not, on its face, alter the scope."},"complexity_factors":["Cross-reference to an external instrument (Transport Canada AD CF‑99‑13) — requires consulting another document for technical steps","Narrow applicability by serial numbers (23001–23038) — precise identification needed to determine affected aircraft","Specified effective date (30 August 2007) and firm compliance deadline (30 September 2007) — short compliance window","No technical procedure reproduced in the text — enforcement depends on interpreting and applying the referenced AD","Operational impact risk (possible grounding) and direct cost burden on owners/operators for inspection, parts and repairs","Potential naming ambiguity in the header (BHTC 222 vs Model 230) that could cause confusion when matching records"],"plain_english_summary":"This Airworthiness Directive requires operators of Bell Model 230 helicopters (serial numbers 23001–23038) to carry out the inspections and any corrective actions described in Transport Canada AD CF‑99‑13. The AD took effect on 30 August 2007 and set a deadline of 30 September 2007 for the initial inspection.\n\nAircraft owners/operators pay for inspections and repairs; the Civil Aviation Safety Authority (through its delegate) enforces compliance. Practically, it compels operators to schedule inspections/repairs per the foreign AD and may ground affected aircraft until compliant, creating parts and scheduling costs."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-222-39-flapping-bearing-to-yoke-attachment-bolts","history":"/api/acts/ad-bell-222-39-flapping-bearing-to-yoke-attachment-bolts/history","analysis":"/api/acts/ad-bell-222-39-flapping-bearing-to-yoke-attachment-bolts/analysis","conflicts":"/api/acts/ad-bell-222-39-flapping-bearing-to-yoke-attachment-bolts/conflicts","importantCases":"/api/acts/ad-bell-222-39-flapping-bearing-to-yoke-attachment-bolts/important-cases","documents":"/api/acts/ad-bell-222-39-flapping-bearing-to-yoke-attachment-bolts/documents"}}