SNAPREP 3519 reported line flow fan #6 n ~~~~~ 3519 S PREP reported line flow fan #6 noisy.  3519 confirmed L  #6 noisy. No spare available for replacement. OPS 20 raised to follow-up.  Kamarul 26.12.2020 To changeout 3519 L  if spare available  3519 L  #6 replaced. Security/function check - OK.  Kamarul/Ridzuwan 44239