As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN PAX DOOR FROZEN SHUT. TOOK ACFT TO A HEATER HANGAR & LET IT THAW. ONCE DOOR OPENED, FOUND WATER & ICE ON DOOR SEAL. WIPED DOOR SEALS DOWN TO DRY & LUBRICATED THEM IAW AMM TASK 52-18-00-600-801-A STEP 2 J 3. NO FURTHER DEFECTS NOTED, DOOR OPENS & CLOSES NORMALLY.