As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FIRE AT GATE AFTER OIL SVC RAN APU TO VERIFY NO SIGNS OF OIL OR FUEL LEAKS REF FIM 49-10341. MECHANIC SAW SIGN OF OIL LEAK WHICH CAUGHT FIRE. C/W APU INSPECTION IAW AMM 49-11-00-04G-311A UPDATED. APU INSP NOTED, NEEDS TO BE C/W REF ASSOCIATED LP 7737965 & 7739957. REMOVED APU IAW AMM DMC-B787-A-49-11-00-04F-520A-A. INSTALLED APU IAW AMM DMC-B787-A-49-11-00-04F-720A-A, COMPLETED FROM STEP 1.A. THROUGH E.(9). CONTINUE MAINTENANCE.