As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DOOR EMER LH OPEN. PRESS NORMAL. CREW REPORTED NO VISIBLE GREENINDICATION. PAX REPORTED A LOUD POP. WARNING ANNUNCIATED AT APPROX. 6000 FT AND CLEARED DESCENDING THOUGH 6000 FT. EMERGENCY LANDING. REMOVED LH EMER EXIT PER AMM 52-21-00. CKD LATCH MECH, DOOR STRUCTURE AND DOOR SEAL. NO PROBLEMS FOUND. FOUND DOOR SKIN/FUSELAGE STEP AT TOP INCORRECT. ADJUSTED UPPER FITTINGS PER AMM 52-21-00-501. REINSTALLED DOOR. PRESSURIZED AIRCRAFT PER AMM 21-31-00. LEAK CK OK..