What was found
AC RETURNED TO PHX DUE TO HIGH ENGINE VIBRATION ON LEFT ENGINE. VIBRATION CAUSED BY FOD INGESTION DURING GROUND OPERATION OR TAKEOFF. A LEFT MAIN TIRE BLEW ON ROTATION. ON LANDING THE OTHER LEFT MAIN TIRE FAILED. REPLACED BOTH LEFT MAIN WHEEL ASSYS IAW 32-41-01. INSPECTED LEFT ENGINE FOR DAMAGE. BORESCOPE INSPECTED 1ST STAGES OF COMPRESSOR, FOUND NO EVIDENCE OF INTERNAL DAMAGE OR PIECES OF TIRE. REPLACED 28 FAN BLADES, DID NOT REPLACE ENGINE.