Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 167; Flight Crew Type 2452
Aircraft Equipment Problem Less Severe
Aircraft Equipment Problem Dissipated
Aircraft; Environment - Non Weather Related
While waiting to be parked at Gate xx; First Officers RA (radio Altimeter) indication was wildly erratic. Fluctuated between 0 and 2500 ft. continuously for the entire time we waited for a guide man. Returned to normal after taxiing forward to the gate.
Air carrier Captain reported RA anomalies on taxi in at ROC; citing possible 5G interference as the cause of the event.