As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH APU RUNNING AND APU BLEED SWITCH ON, NO DUCT PRESSURE IS INDICATED. ACFT GROUNDED. REPLACED APU IAW TASK CARD 78349010 STEPS 1-3 AND AMM 49-11-00-400 STEP G-L. COMPLETED INSTALLATION OF APU PER ASA TASK CARD 78349010 STEPS 4-7 AND AMM 49-11-00-400 STEP M-N OPS AND LEAK CHECKED GOOD. SERVICED APU OIL TO FULL.