A term from the PAS 1192 / ISO 19650 world for a scheduled point in a project where a specific, pre-agreed set of information must be delivered into the CDE - not a vague "send it when it's ready," but a fixed milestone tied to the project's MIDP. Missing a data drop is treated the same as missing any other contractual deadline.

Data drops are what make the MIDP and TIDP more than a theoretical schedule - they are the concrete checkpoints a project team is actually held to, usually aligned with major project stages like the end of a design phase or a construction milestone.