TC feedback train was jerky while departing 30 to 40 meters away from RFP station. ~~~~~ 3523 TC feedback train was jerky while departing 30 to 40 meters away    from RFP station.  523/524 checked brake shoes, gearbox oil level, CCD shoe fuses - OK. Checked wheel & found 3523 A1 having thermal crack & 1523 A4 wheel having thermal crack & wheel flat(30mm x 60mm). ER D/L - Done by EMM Chadwyn. Notif 2192767 raised for wheel for reprofiling.  Haiqal/Huzzaidi/Faiz/Amair 44067 Notif 2192767 Name                          : Support Team 3 (UPD) Date of Occurrence            : 25/08/2020 Last Service Date             :   EMU / Equipment / Location    : 1523 / A4 Wheel Equipment Serial No. (if any) :   Description of fault / cause  : Thermal Crack & Wheel Flat Measurements (if any)         : A4 (30 x 60) mm Required Rectification        : Required Wheel profiling