As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ATTEMPTING A SLIDE/RAFT DEMONSTRATION FOR A GROUP OF FLIGHT ATTENDANTS AT JFK, THE SLIDE FAILED TO DEPLOY DUE TO GRID LANYARD STRAP SNAPPED IN HALF (SLIDE NOT MOUNTED AT THE DOOR ATTACHED TO FLOOR BRACKET). REMOVED SLIDE AND SHIPPED TO VENDOR FOR EVALUATION. (M)