AricJP 0 Posted October 23, 2014 Share Posted October 23, 2014 I use Professional Flight Planner X (PFPX) to plan my flights and I'm very curious about the meaning of two parts of the OFP (Official Flight plan, the viewable, ".txt" version of the flight plan). In the fuel section towards the top of the OFP, right under the spot for "Captain's Signature", there is a spot where it says "CLB: 250/310/84 DES: 84/320/250" I know that they stand for Climb and Descent but I don't understand what the numbers mean next to them. I've looked all over the internet and I can't find a single answer. Link to comment Share on other sites More sharing options...
Emi 5161 Posted October 23, 2014 Share Posted October 23, 2014 250kt below FL100, 310kt until transition to Mach, M.84 until reaching crz alt. Same for the descend. Link to comment Share on other sites More sharing options...
srcooke 422 Posted October 23, 2014 Share Posted October 23, 2014 CLB: 250kts to 10000 feet then 310kts until reaching the equivalent Mach figure Mach 0.84 Continue climb at M0.84 Descent the reverse is true EDIT: Snap Emi Link to comment Share on other sites More sharing options...
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