What was found
COMPRESSOR STALLS WITH SLIGHT BUT RAPID POWER CHANGES. NOTE: THIS ENGINE WAS REMOVED FROM ANOTHER A/C WITH THESE SYMPTOMS AND ANOTHER ENGINE INSTALLED SO IT COULD START A JOB. THIS COMPRESSOR WAS INSTALLED FOR TROUBLESHOOTING WHEN THIS ENGINE WAS INSTALLED IN 5074R. *(PREVIOUS MDR FOR THE SAME PROBLEM WAS FILLED OUT ON THIS ENGINE WHEN IT WAS INSTALLED ON N3115Y). BOTH COMPRESSORS HAVE BEEN SENT IN FOR REPAIR.