What was found
DURING TAXI IN, APU AUTO SHUTDOWN AND LOW OIL PRESSURE ANNUNCIATOR LIGHT AND MASTER CAUTION ILLUMINATED. GROUNDED - YES. (RESOLVED ON W/O: 1976115 TASKCARD: N/R-00003 ) ACCOMPLISHING FIM 49-90 TASK 803, OIL PRESSURE SHUTDOWN, FOUND LOW OIL QUANTITY AND SGU CASING CRACKED. APU REQ NEW SGC, P/N 28B545-9STYLEA VERIFIED WITH SEAMC MITCH IAW AIPC 49-41-21 FIG 1 ITEM 15. REMOVED AND REPLACED SGU REF AMM 49-41-21. GROUND VERIFICATION SUCCESSFUL. THIS CLEARS MEL 49-1B. PLACARDS REMOVED SEAMC ASHRAF NOTIFIED. NO FAULTS NOTED.