As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT THROUGH 10,000 FT THE CABIN DOOR WARNING LIGHT CAME ON. CREW FOLLOWED EMERGENCY CHECKLIST PROCEDURES & RETURNED TO THE STATION. THE MICROSWITCH ON LATCH CAM INSIDE THE DOOR WAS FOUND SLIGHTLY OUT OF ADJUSTMENT DUE TO WEAR & WAS ADJUSTED. THE DOOR WARNING SYSTEM OPS CK GOOD AFTER ADJUSTMENT. THE WEAR ONLY MANIFESTED ITSELF AS THE AIRCRAFT WAS PRESSURIZED.