As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ENGINE 1 STALL FL350. ONE TIME ECAM MESSAGE CAME UP, THEN WENT AWAY. ENGINE INDICATIONS ARE NORMAL. STALL WAS HEARD IN THE FLIGHT DECK. BANG FELT ON CENTER PEDESTAL. MAINTENANCE FOUND THE #1 ENGINE INLET PRESSURE VALVE FAILED INSPECTION AND REPLACED IT PER AMM 36-11-41. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.