AD/BELL 412/4 Amdt 1 - Main Rotor Yoke - Inspection, Retirement and Modification Zoe has a public metadata record for this legal instrument, but accepted source text is not available in the agent mirror yet. Canonical page: https://zoelaw.ai/legislation/ad-bell-412-4-amdt-1-main-rotor-yoke-inspection-retirement-and-modification