As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JUMPSEATERS HEARD A POP SOUND AT ABOUT 500 AGL ON ARRIVAL FROM MAIN ENTRY DOOR. MAIN ENTRY DOOR SLIDE WOULD NOT DISARM. SUCCESSFULLY DISARMED DOOR. REMOVED AND REPLACED SLIDERS (2EA), GIRT BAR AND RETAINER CLIPS (2EA) IAW AMM 25-61-21/401. RE-INSTALL ESCAPE SLIDE OF CREW DOOR.