As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PDC SQUIB TEST BOTH EMER ESCAPE LT AND RT NOT ILLUMINATED WHEN TEST 1 S/W PRESSED. BOTH LT AND RT SPOILER NOT ILLUM WHEN TEST SW PRESSED. MAINTENANCE REPLACED BOTH LT AND RT OFF WING ESCAPE SYSTEM BATTERY PACK PER AMM. OPS TEST OK. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS