AD/BELL 407/20 Amdt 1 - Tailboom Tail Rotor Gearbox Support Casting 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-407-20-amdt-1-tailboom-tail-rotor-gearbox-support-casting