What was found
FLT 543, EWR-EWR. EMERGENCY DECLARED. ACFT OPERATING FLIGHT 543 EWR - PBI CARRIED OUT AN AIR RETURN INTO EWR. FLT CREW REPORTED THAT DURING CLIMBOUT. RECEIVED ENG 1 OIL FILTER CLOG MESSAGE & AFTER 1 TO 2 MINS, RECEIVED A MOMENTARILY ENG 1 STALL ECAM MESSAGE FOLLOWED BY AN ODOR OF SMOKE. FLT CREW MEMBERS CALLED THAT THEY HAD HEAVY SMOKE IN CABIN. ALL ENG PARAMETERS REMAINED NORMAL. HAD A MOMENTARILY LT YAW MOMENT & LOUD BANG ASSOCIATED WITH STALL. EVACUATION CARRIED OUT AFTER LANDING & EVACUATION QRH FOLLOWED. ENG 1, ENG 2, & APU FIRE PUSH BUTTONS WERE PUSHED BUT FIRE BOTTLES NOT DISCHARGED. ACFT HAS BEEN TAKEN OUT OF SERVICE IN EWR AND THE ACFT HAD TWO PREVIOUS REPORTS IN FEBRUARY 2026 ON ENGINE 1 FOR ENG 1 START FAULT AND ENG 1 EGT OVER LIMIT. OPEN