AD/HILLER 12/29 Amdt 4 - Main Drive Torsion Coupling - Inspection and Replacement 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-hiller-12-29-amdt-4-main-drive-torsion-coupling-inspection-and-replacement