As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F/A UNABLE TO ARM R1 DOOR SLIDE AT DEPARTURE TIME. PILOT ALSO TRIED TO ARM NO HELP. MTC WAS REQUESTED. REMOVED FOD FROM R1 DOOR GIRT BAR FITTING. SLIDE WAS ABLE TO ARM . ALL OPS SATIS PER AMM 52-11. ACFT OK FOR SVC. (1733276)(AIRCRAFT GROUNDED)