As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU AUTO SHUT DOWN, TWO ATTEMPTS. HAS HISTORY GROUNDED - YES. TURN APU MASTER SWITCH ON DO NOT START ACCESS APU SHUTDOWN DATA FROM THE APU PAGE ON MCDU AND UPDATE TROUBLESHOOTING TO ORDER PARTS.APU SHUTDOWN IS NOT BEING REPORTED TO PTMD R&R APU SPEED SENSOR, ACCOMPLISHED OPERATIONAL TEST IAW AMM 49-71-13. OPS CHECK GOOD. AIRCRAFT RELEASE FROM MEL 49-10-01. MAINT PROCEDURES REVERSE. MDDR 76561 REMOVED. MC NOTIFIED.