As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER STARTING AND WITH ENGINE STABLE AT IDLE, THE NR 1 ENGINE COMPRESSOR STALLED. N1, N2, AND OIL PRESSURE DECREASED WITH EGT RISING TO 490 CELSIUS. AFTER SECOND START, ENGINE OPERATION WAS NORMAL. MAINTENANCE RAN ENGINE WITH NO DEFECTS. EXACT PART CAUSING PROBLEM TO BE DETERMINED.