As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU CURRENT STATUS SHOWS MAINT MSG 49-61262. SPEED SENSOR 2 SHOWS OPEN CIRCUIT. ACFT GROUNDED. CONFIRMED FAULT, APU BITE, REF AMM 49-61-00-700-801 SHOWS CURRENT STATUS FAULT AND FFR SHOWS NUMEROUS APU SPEED SENSOR 2 FAULT MSG 49-61262. R & R SPEED SENSOR REF AMM TASK 49-61-21, GROUND FUNCTIONAL CK AND LEAK CK NORMAL REF FIM 49-60, TASK 817.