As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: WHILE AIRBORNE DOOR 3L SLIDE NOT SHOWING ARMED. ON FAP SLIDE IS ALSO NOT SHOWING ARMED. WHEN ARMING HANDLE IS PUSHED DOWN SLIDESHOWS ARMED. ALL INDICATIONS WERE NORMAL ON THE GROUND BEFORE TAKEOFF. MAINTENANCE REPLACED AFT LEFT DOOR SLIDE IAW J/C 26L00025010.