1. A method for monitoring combustion dynamics of a can annular combustor comprising: monitoring respective dynamic operating conditions of a plurality of combustor cans of a can annular combustor of a gas turbine engine with respective dynamic operating condition sensors associated with each of the cans; grouping the cans into two or more groups according to their respective dynamic operating conditions; identifying a sensor providing an anomalous dynamic operating condition reading for at least one of the cans; and determining a need to service the identified sensor according to the associated can's group membership.