What was found
ON CLIMBOUT APPROX 1500 AGL AFTER SETTING QUIET EPR AND RETRACTING FLAPS TO 5 DEGREES, EXPERIENCED SEVERE COMPRESSOR STALL WITH AUTOPACK TRIP, ENGINE PARAMETERS REMAINED WITHIN LIMITS RETURNED TO GTF. PERFORMED TROUBLESHOOTING PER PWA JT8D M/M 72-00-00 STEPS 1 THROUGH 4, CLEANED PRBC SCREENS. AS PRECAUTION PERFORMED TAKEOFF EPR AND ACCELERATION TEST PER FEDEX B727 JRH CHAP 6. ALL PARAMETERS CHECKED GOOD, A/C RELEASED FOR SERVICE.