CDG, a Boeing Company | 22,804 followers on LinkedIn. What We Do Engineering Services: We provide Boeing and OEMs expertise through the entire engineering lifecycle: from initial design, to aftermarket engineering changes, and securing regulatory approvals. CDG is an EASA Design Organisation (EASA.21J.536). Technical Authoring Services: We deliver high quality technical publications (including AIPC, CMM, AMM, SB) at competitive rates leveraging our global staff of aerospace experts.