As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT WAS GROUNDED DUE TO BRAKES NORMAL BRAKE FAULT ECAM REPEATEDLY SURGING FELT IN BRAKE PEDALS DURING NORMAL ALT BK TRANSFER REF LP441987. REMOVED AND REPLACED ALTERNATE BRAKING SELECTOR VALVE PN C24993000 WORK DONE IAW 37-43-00-710-001 LEAK CHECK GOOD A/C OK FOR SERVICE.