As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POST FLIGHT LINE MAINTENANCE REPORTED, R4 DOOR ASSIST BOTTLE AT ZERO PSI. EMERGENCY DOOR SLIDE FELL OUT, DID NOT DEPLOY. SLIDE WAS NOT ARMED. R4 EMERGENCY SLIDE WAS REMOVED AND REINSTALLED IAW B757 AMM 25-66-01. NO ADDITIONAL FAULTS NOTED.