July 25, 201411 yr Hi, on my latest flights I´ve been experiencing something weird. At the very beginig of the descent, just after reaching the TOD, I get a "drag required" message, even if I am going a bit slow and high on the VNAV Path. Then, fmc speed drops to 0. I disengage the A/P, handfly it a little bit, reset the F/Ds, and then, after a couple of times doing this process, i leave the A/P on, but i control myself the vnav speed, pressing the speed knob. Finally, when I reach FL200, approximately, everything goes back to normal and works as expected. I know it isn´t a pilot error, because before the SP1, I did the same things and procedures, but this didnt happen. Thanks in advance for your help! Santi López Cané
July 25, 201411 yr Commercial Member Hi, on my latest flights I´ve been experiencing something weird. At the very beginig of the descent, just after reaching the TOD, I get a "drag required" message, even if I am going a bit slow and high on the VNAV Path. Then, fmc speed drops to 0. I disengage the A/P, handfly it a little bit, reset the F/Ds, and then, after a couple of times doing this process, i leave the A/P on, but i control myself the vnav speed, pressing the speed knob. Finally, when I reach FL200, approximately, everything goes back to normal and works as expected. I know it isn´t a pilot error, because before the SP1, I did the same things and procedures, but this didnt happen. Thanks in advance for your help! Are you programming anything in the Decent Forecast. That info will determine your TOD and could be throwing off the calculation with incorrect information. - Jordan Jafferjee - AMD Ryzen 9 7950X3D | Asus X670-E Pro Prime | Gigabyte RTX4080 Eagle | 64G G.Skill Trident Z.5 DDR5-6000 | Arctic Liquid Freezer II 360 | 2x2TB Samsung 990 Pro NVME | NZXT H7 | Win 11 24H2 | TM Warthog Flight Stick + Throttle | Honeycomb Alpha + Bravo | MFG Crosswind Rudder Pedals | Samsung 43" Odyssey Neo G7 | Dell U3415W
July 25, 201411 yr Author Are you programming anything in the Decent Forecast. That info will determine your TOD and could be throwing off the calculation with incorrect information. i program myself the descent forecast. i did this before the SP1, but it didnt happen Santi López Cané
October 17, 201411 yr You didn't provided enough information to try to duplicate problem. Full names required here, thanks. Dan Downs KCRP
October 25, 201411 yr Perhaps it used to do it automatically, I've only had this problem since I upgraded to SP1c last week and I get all my plans from Simbrief.com
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