As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
T-S FWD CARGO DOOR WILL NOT OPEN ELECTRICALLY. VOLTAGE CHECKS GOOD AT CONNECTOR DM471 PIN 5. DOOR CLOSED NORMAL WITH ELECT PWR. REPLACED RELAY K1 IN CARGO DOOR JUNCTION BOX (YAAJB1) REF WDM 52-34-12 PG 1. CYCLED DOOR 20 TIMES IN A 2 HR PERIOD REF MM, OPS NORMAL.