A320
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 111; Flight Crew Total 2546; Flight Crew Type 879
Troubleshooting
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General Release Refused / Aircraft Not Accepted
Aircraft; Weather; Manuals; MEL; Company Policy
The plane had a deferred green hydraulic braking system as well as a deferred number 4 brake. This left the plane with no auto brakes and asymmetric braking due to having two brakes on the left main gear and only one on the right gear. The flight was released to fly to ZZZ where it had been snowing for three hours with 1/8 inch slush and snow on the runway. Due to conditions and degraded braking ability; I refused the aircraft. Dispatch; Maintenance; and [other appropriate departments] were briefed. A new plane was brought from the hangar and the flight continued two hours late.
A320 Captain reported refusing an aircraft due to faulty braking systems.