What was found
DURING APU START ON TAXI IN, "APU FAULT" ON 2 START ATTEMPTS. (<P>APU INOP, TRANSFERRED TO MDDR # 114864 IAW DDG 49-11-01A, CAT 'C', DUE 26-JUL-19.</P><P>LOG PAGE 1080692- M6: REMOVED AND REPLACED SURGE CONTROL VALVE IAW AMM 49-53-01, OPS CHECK NORMAL AT THIS TIME. PERFORMED APU SELF TEST AS PER AMM 49-61-05, NO FAULTS NOTED. THIS CLEARS DMI #114864. PLACARD REMOVED AND MCC NOTIFIED.</P>)