As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. ON DESCENT RECEIVED "BLEED APU LEAK" ON EICAS ASSOCIATED WITH A STRONG BURNING SMELL. TROUBLESHOOT PER FIM 36-22-00-810-822-A AND REPAIR PER APPLICABLE AMM. ACCOMPLISHED J/C 43L00021001 RAN BOTH ENGINES INDIVIDUALLY AT IDLE AND BOTH PACKS INDIVIDUALLY FROM EACH ENGINE BLEED SOURCE (FULL HOT, FULL COLD). NO ODOR NOTED. FOUND OPEN WIRING FAULT ON BOTH LOOP 1 AND LOOP 2. CLEANED CONNECTIONS ON LOOP 1 AT LOCATION 46 AND LOOP 2 AT LOCATION 74 PER TSM 36-22-00-810-813. OPERATIONS CHECK GOOD.