TC feedback MCH was jammed in B3 position and unable to proceed in ATPM mode to Headwall. TC toggledMS and MCH once - ok. TC feedback MCH was jammed in B3 posi tion and unable to proceed in ATPM mode to Headwall. TC togg ~~~~~ TC feedback MCH was jammed in B3 positio     Check the above mention reported and found one of the MCH screw slightly loose and tighten & torque back done.Tested several times ok. Done by Saini/Haslan. 07/03/23