What was found
APU GEN OVERLOAD FOLLOWED BY APU GEN FAIL FOLLOWED WITH APU SHUTDOWN WITH BURNING SMELL IN FLIGHT DECK WITH SMOKE FROM APU EXHAUST MEL 14FEB26 13:49 CLT C04522 49-1 APU AUXILIARY POWER UNIT DFRL 15FEB26 06:26 ALB SEE HA 300 SEQ 7 OF ALB RON PACKAGE FOR TROUBLESHOOTING. R/R APU GCU AND APU STARTER GENERATOR NO FIX. FOUND EVIDENCE OF ARCING ON APU START CONTACTOR. R/R'D APU START CONTACTOR. NO FIX. REQUIRES FURTHER TROUBLESHOOTING. CONTINUE MEL 49-1. FACT 17FEB26 03:05 RIC STARTED AND STOPPED APU 3 TIMES IRT AMM 49-13-00-910-802/803-A OPS CHECK GOOD. OK FOR SERVICE. CLEAR MEL