PM reported 1649 #4 LFF unable to swivel ~~~~~ PM reported 1649 #4 L  unable to swivel     During 3MCD01 found #1649 L -#4 not swivel.Replaced new L  and tested ok. #1649-L  s/n- Old s/n: 2152 New s/n: 187S Not: 2330191 raise to RSW. Done by Imran/Zul.  09/11/21