PSDs are still in the aeronautical knowledge syllabus for the ATPL.
4.6.4 Calculation of track and groundspeed
(a) review basic track and groundspeed calculations:
• plotted positions, IAS/TAS/GS, HDG/TRK
• determination of wind velocity
(track and groundspeed methods only)
• calculation of ETAs, EETs
(b) review ETP and PNR calculations;
(c) inflight diversion to fixed point:
• last PSD
• time and fuel required.