DARP. Dynamic Airborne Reroute Procedure From September 19, 2013. ODP ( O ceanic Air traffic Control D ata P rocessing System). DARP REQ Must be Made ……. 1 Hour Prior to th e BDRY. At or EAST of 145 E. 20 Min Prior to Divergence. ① DOWNLINK. 170E. ② CONFLICTION JUDGMENT by ……. - PowerPoint PPT Presentation