As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE ON AN ACCEPTANCE FLIGHT AFTER HEAVY MAINTENANCE, THE CREW OBSERVED A NR 1 CARGO DOOR UNSAFE INDICATION. THE WARNING LIGHT EXTINGUISHED AT 7.2 PSID AFTER REDUCING ALTITUDE TO 11K FT. THE AIRCRAFT RETURNED TO POINT OF DEPARTURE WHERE THE SWITCH WAS ADJUSTED AND THE AIRCRAFT RELEASED FOR RETURN TO SERVICE.