What was found
AFTER TAKEOFF PASSING 1000', 5 IN SUCCESSION LOUD BANGS WITH HEAVY SHUTTERS. ENGINE INDICATIONS APPEARED NORMAL AND THERE WAS NO YAW ASSOCIATED WITH THE BANG/SHUTTERING. DURING NR 2 ENGINE INLET AND EXHAUST INSPECTION FOUND LEFT HAND FAN STATOR AFT INNER SEGEMENT PANEL AT 11:00 POSITION BLEW OFF AND DEPARTED AIRCRAFT, LEFT T/R HALF DAMAGED AS WELL. T/R DAMAGE IS A GOUGE ON INTERIOR WALL ABOUT 9:00 POSITION. GOUGE IS APPROXIMATELY 6" LONG BY 5" WIDE AND INTO THE HONEY COMB STRUCTURE. PICTURES OF DAMAGE ATTACHED. REVERSER R & R ON SEPARATE WRITE UP. WRI 78-30/0645. CHECKED ECU 2A AND ECU 2B, NO CURRENT FAULTS AND NO FAULTS STORED IN FAULT REVIEW. INSTALLED MISSING NR 2 FAN STATOR INNER AFT LINER SEGMENT REFERENCE MD-11 AMM 72-33-01-4-1. R & R NR 2 ENGINE HMU, REF MM 73-21-01-4-1. FAILED OPERATIONS CHECK. TROUBLESHOOTING CONTINUES. FOUND ROD ENDS WORN ON BOTH VSV ACTUATORS. ALSO R & R, N1 SENSOR, N2 SENSOR, CIT SENSOR, STATOR CONTROL ALTERNATOR. HMU, AND ECU, REF AMM MANUAL REFERENCES. 75-31-01-4-1,77-11-01-4, 77-11-02-4-1,73-21-11-4-1,73-21-21-4-1,73-21-01-4-1, AND 73-21-02-5-1. RAN UP ENGINE TO 83 PERCENT PER JRH POWER ASSURANCE TEST NO FAULTS FOUND AC OK FOR SERVICE.