As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POWERPLANT ENGINNEERING REQUEST THE APU BE REMOVED. REMOVED APU REF M/M 49 11 00 000 802 AND T/C 78349010. FOUND SIGMA SEAL OUT OF LIMITS. REPLACED SIGMA SEAL REF M/M 49 15 11 400 801. INSTALLED APU REF M/M 49 11 00 400 802 AND T/C 78349010. LEAK AND OPS CK GOOD.