As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IMMEDIATELY AFTER TAKEOFF "FORWARD CARGO DOOR NOT CLOSED" AND "CHECK 0001 TIMES" WHICH LED US TO COMPLETE AN AIR TURN BACK AS AIRCRAFT DIDNT SEEM TO BE PRESSURIZING. REMOVED & REPLACED DOOR WARNING SWITCH 14WS PER AMM 52-71-00/401. OPS CHECK GOOD. ADJUSTMENT OF SPRING LEAF WITHIN LIMITS PER AMM 52-71-00/501. DMP REVERSED, PLACARD REMOVED