What was found
RETURNED TO DEN UNDER AMBER ALERT, NR 1 ENGINE FLAME-OUT. *S/D* INLET GEARBOX SPLINE AND THE MATING HIGH PRESSURE COMPRESSOR ROTOR SPLINE ADAPTOR, (P/N 9661M85P07), BOTH HAD WORN TO THE EXTENT THAT UNCOUPLING OCCURRED. THEREBY, SHUTTING OFF THE POWER TO THE ANGLE GEARBOX ACCESSORIES. THE EXCESSIVE WEAR IS ATTRIBUTED TO THE HIGH TIME ON THE MATING SPLINES. THE IGB HAD NOT BEEN DISASSEMBLIED SINCE IT WAS NEW. HIGH TIME IGB'S WILL BE REMOVED AND INSPECTED DURING SHOP VISITS.