What was found
ORD - FLT 4076 - DURING TAKEOFF, NR 1 ENGINE LOST POWER, LOUD NOISE HEARD FROM ENGINE. F/O REPORTED FIRE FROM ENGINE, NO FIRE WARNINGS GIVEN ON ALERTS. FIRE BOTTLE BLOWN. AIRCRAFT LANDED IN ORD. MAINTENANCE REPLACED THE ENGINE DUE TO INTERNAL ENGINE DAMAGE. AIRCRAFT RETURNED TO SERVICE. PART TOTAL CYCLES, 20131.0. (X)