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DP
A preplanned instrument flight rule (IFR) departure procedure published for pilot use, in graphic or textual format, that provides obstruction clearance from the terminal area to the appropriate en route structure. There are two types of DP, Obstacle Departure Procedure (ODP), printed either textually or graphically, and Standard Instrument Departure (SID), which is always printed graphically.
Source FAA Pilot/Controller Glossary · checked 2026-08-25