Pardew hit out after Wigan's Callum McManaman escaped a ban for his horror challenge on Toon defender Massadio Hadaira but Liverpool's Luis Suarez was banned for 10 games after biting Branislav Ivanovic of Chelsea.
"I don't think that's reasonable," Pardew said. "That is a flaw in the system. All Premier League managers are looking for that committee to give us the answers as to why. You're always going to have grey areas when it comes to discipline and fines but at least have some consistency. It's consistency of punishments we're looking for.
"The FA need to answer why it was 10 games for Suarez. It's interesting why it was."