As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GENERATED WHILE A/C WAS IN HEAVY CHECK, MAINTENANCE REPORTED THAT THERE WAS A CRACK IN THE COMPOSITE PLATE, AT THE UPPER MOUNT OF L-1 EMERGENCY EVACUATION SLIDE. MAINTENANCE REMOVED AND REPLACED L-1 EMERGENCY EVACUATION SLIDE PER EMB AMM, OPS CHECK GOOD.