As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF CARGO DOOR CAS MESSAGE ILLUMINATED AND CAB ALT ROSE. LEVELED AT 4000FT AT WHICH POINT THE CARGO DOOR LIGHT WENT OUT. CABIN CONTINUED TO RISE TO 4000FT. RETURNED TO PDK UNEVENTFULLY. WILL LEAVE DOOR AS IS. REMOVED BROKEN BAGGAGE DOOR LOCKED PROXIMITY SENSOR HARNESS & INSTALLED NEW BAGGAGE DOOR LOCKED PROXIMITY SENSOR HARNESS. OPS CHECKS GOOD. NO FURTHER DISCREPANCIES NOTED AT THIS TIME. WORK PERFORMED IAW WMM 52-70-01-1.