As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY ESCAPE SYS L FAILED TEST ON P 61.( EMERGENCY BATT. PACKS M 961 (DISCHARGED) (REF AAR NR 9669191) REMOVED, REPLACED AND TESTED NORMAL M961 BATTERY FOR LEFT EMERGENCY ESCAPE, PUSH TO TEST TESTED NORMAL REF B767 AMM 25-65-17-004-001-001, 25-65-17-404-008-001 AND STEP 3 G (11) OF 25-65-00-442-010.