What was found
APU SHUTDOWN AFTER ENGINE SHUTDOWN AT THE GATE, APU FAULT LIGHT CAME ON. PERFORMED APU LAST RUN BITE FOUND LOW OIL PRESS FAULT, FOUND OIL CAP NOT SECURED, ADDED 4 QTS, RESECURED CAP, RAN APU, PERFORMED EXTERNAL LEAK NO LEAKS NOTED. APU OPS CHECK NORMAL. (K)