Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Time Pressure; Workload; Situational Awareness
Ground Event / Encounter Weather / Turbulence; Ground Event / Encounter Loss Of Aircraft Control
Flight Crew Regained Aircraft Control
Human Factors; Weather
Heavy snow on arrival; landing and taxi in okay. Gate area was partially plowed; however when given stop signal by line person the aircraft continued moving. Both pilots applied full braking and parking brake was set to no avail. Cycled reverse thrust several times to stop aircraft. Managed to stop before hitting any ground gear. Airport was completely covered in snow; weather was low Runway Visual Range around 2500-3000ft. All surfaces very slick. We were moving very slowly and deliberately; obviously the ramp area was much slicker than I anticipated. Should have tried stopping before the signal.
Air Carrier pilot reported braking did not stop their aircraft while parking at a snow covered gate so they applied reverse thrust to stop the aircraft.