What was found
NR 2 ENGINE COMPRESSOR STALL. ENGINE CONTINUES STALLING WHENEVER THROTTLE ADVANCED BEYOND IDLE. ENGINE REPLACED AT KIX. SHOP DISASSEMBLY SHOWED HEAVY HP COMPRESSOR BLADE DAMAGE RESULTING FROM LIBERATION OF 14 BROKEN VARIABLE STATOR VANE INNER TRUNNION 'BUTTONS'. THE INNER TRUNNION BUSHINGS HAD WORN AWAY, THEREBY ALLOWING METAL-TO-METAL CONTACT BETWEEN THE 'BUTTONS' AND INNER SHROUD. THIS PROBLEM HAS PREVIOUSLY OCCURRED IN THE INDUSTRY. CURRENT FIXES ARE TO RTV THE INNER SHROUD CAVITIES, TO CONTAIN BROKEN BUTTONS, AND PREVENT THEM FROM ENTERING THE GASPATH. THE OTHER FIX IS NEW MATERIAL INNER TRUNNION BUSHINGS THAT ARE MORE RESISTANT TO WEAR.