{"id":"F2005L03436","name":"AD/BELL 212/67 - Emergency Floatation Reservoir Adapter","slug":"ad-bell-212-67-emergency-floatation-reservoir-adapter","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":38798,"registerId":"commonwealth-F2005L03436-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bell Helicopter Textron 212 Series Helic","sectionType":"division","heading":"Bell Helicopter Textron 212 Series Helicopters","content":"### Bell Helicopter Textron 212 Series Helicopters\n\n| AD/BELL 212/67 | Emergency Floatation Reservoir Adapter | 13/2005 TX |\n| -------------- | -------------------------------------- | ---------- |\n\n| Applicability: | Bell Helicopter Textron Model 212, helicopters modified with Aeronautical Accessories, Inc. (AAI), Supplemental Type Certificate (STC) SH2820SO; or with AAI Parts Manufacturer Approval (PMA) reservoir assembly, part number (P/N)212-372-050; or with adapter, P/N 212-371-002, installed.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. Vent the nitrogen from the reservoir assembly by following the Accomplishment Instructions, Part II - Floatation System Discharging, of AAI Alert Service Bulletin (ASB) No. AA-05005, Revision A dated 27 June 27 2005 or later FAA Approved revision.2. Remove the valve assembly and air line from the adapter, and inspect the counter bore depth (dimension D) as shown in Figure 1 of the ASB.(a) If dimension D, as depicted in Figure 1 of the ASB, does not exceed .860 inch, recharge the floatation system by following the Accomplishment Instructions, Part III - Floatation System Charging, and referring to Figures 2 and 3 of the ASB.(b) If dimension D, as depicted in Figure 1 of the ASB, exceeds .860 inch, replace the reservoir assembly and the adapter with serviceable parts.3. Discharging and recharging the floatation system and inspecting the counter bore depth dimension of the adapter shall be done in accordance with the specified portions of the ASB.Note: FAA AD 2005-20-38 Amendment 39-14335 refers. |\n| Compliance:    | 1. Within the next 24 hours time-in-service (TIS) or before the next emergency floatation supply bottle nitrogen charging after the effective date of this AD.2. Within the next 24 hours time-in-service (TIS) or before the next emergency floatation supply bottle nitrogen charging after the effective date of this AD.2. (b) Before further flight after the effective date of this AD.3. From the effective date of this AD.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |\n\n|             | This Airworthiness Directive becomes effective on 9 November 2005.                                                                                                                                               |\n| ----------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Background: | The actions detailed in this AD are intended to prevent rupture of an adapter, uncontrolled jetting of pressurized gas from the nitrogen bottle, and subsequent injury to occupants or damage to the helicopter. |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n4 November 2005","sortOrder":0},{"sectionNumber":"AD/BELL 212/67","sectionType":"part","heading":"AD/BELL 212/67","content":"## AD/BELL 212/67","sortOrder":1},{"sectionNumber":"Emergency Floatation Reservoir Adapter","sectionType":"part","heading":"Emergency Floatation Reservoir Adapter","content":"## Emergency Floatation Reservoir Adapter","sortOrder":2},{"sectionNumber":"13/2005 TX","sectionType":"part","heading":"13/2005 TX","content":"## 13/2005 TX","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific safety defect in a specific part on specific helicopter models. It has not expanded beyond its original purpose of preventing adapter rupture in Bell 212 emergency flotation systems."},"complexity_factors":["Short, single-purpose directive with one clear safety objective","Only 3 main requirements with a simple binary decision tree (measure dimension D, then either recharge or replace)","Heavy reliance on external technical document (AAI Alert Service Bulletin AA-05005) for actual procedures — the AD itself doesn't reproduce the detailed instructions","Minimal defined terms (only standard aviation abbreviations like TIS, STC, PMA, P/N)","Simple compliance timeline structure (24 hours TIS or before next maintenance event)","Contains one obvious clerical error (duplicated compliance item 2) suggesting limited drafting review"],"plain_english_summary":"This AD requires urgent inspection—and possible replacement—of the emergency flotation reservoir adapter on Bell 212 helicopters fitted with Aeronautical Accessories flotation gear (specific STC or part numbers). Operators must vent nitrogen, measure the adapter’s critical dimension (0.860 in threshold), and follow the service bulletin; if oversize, replace reservoir and adapter before next flight. Compliance is required within 24 hours of flight time or before the next recharge. It prevents adapter rupture, injury, and loss of flotation."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"Scope remains focused on Bell 212 helicopters equipped with the specified AAI reservoir/adapter configurations and on preventing adapter rupture and pressurised gas discharge, consistent with the stated Background and Applicability. The AD does not expand beyond those parts or helicopters; it prescribes immediate inspection and corrective actions defined in the Requirement and ties compliance timing to safety‑critical events (Compliance)."},"complexity_factors":["Multiple affected configurations listed in Applicability (Bell 212 with AAI STC SH2820SO, AAI PMA reservoir P/N 212-372-050, or adapter P/N 212-371-002), increasing identification burden.","A precise measurement threshold (.860 inch for counter bore depth) determines different corrective paths (inspect → recharge OR replace) (Requirement ¶2).","Immediate and short compliance windows (within 24 hours TIS or before next nitrogen charging; before further flight in some cases) create operational scheduling pressure (Compliance).","Procedural dependence on an external service bulletin (AAI ASB No. AA-05005, Parts II & III) and FAA AD cross-reference requires access to and adherence to third‑party documents (Requirement; Note).","Safety‑critical removal, replacement and pressurisation work imposes certified maintenance actions and parts availability constraints, affecting cost and downtime (Requirement ¶2b; Compliance).","Potential for repeated maintenance (discharge and recharge of floatation system) each time the condition is checked or corrected increases labour and materials consumption (Requirement ¶1 and ¶3)."],"plain_english_summary":"This Airworthiness Directive requires operators of Bell 212 helicopters fitted with specified AAI floatation reservoir assemblies or the AAI adapter P/N 212-371-002 to vent the nitrogen, inspect the adapter counter‑bore depth (dimension D) and then either recharge the system or replace the reservoir and adapter depending on the measurement. Compliance is immediate (within 24 hours, before the next nitrogen charging, or before further flight). Its stated aim is to prevent adapter rupture and uncontrolled release of pressurised gas that could injure occupants or damage the helicopter."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-212-67-emergency-floatation-reservoir-adapter","history":"/api/acts/ad-bell-212-67-emergency-floatation-reservoir-adapter/history","analysis":"/api/acts/ad-bell-212-67-emergency-floatation-reservoir-adapter/analysis","conflicts":"/api/acts/ad-bell-212-67-emergency-floatation-reservoir-adapter/conflicts","importantCases":"/api/acts/ad-bell-212-67-emergency-floatation-reservoir-adapter/important-cases","documents":"/api/acts/ad-bell-212-67-emergency-floatation-reservoir-adapter/documents"}}