As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU CTSATP TREND DATA SHOWS MES EGT IS AT OR NEAR THE ESTABLISHED THRESHOLD. ACFT GROUNDED. ACCOMPLISHED ALL STEPS OF TSR. REPLACED APU INLET TEMP SENSOR (T2) IAW AMM 49-61-31. INSPECTED INLET PRESSURE SENSOR (P2) IAW AMM 49-52-31. OPS NORMAL.