As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT WING BODY OVERHEAT LIGHT WILL NOT TEST. *FAULTING KEEL BEAM DETECTOR OPEN* / [01] OK TO CONT. PER MEL 26-18-02C; SP#1. THE BITE OF OVERHEAT DETECTION CONTROL UNIT SHOWED FAULT MESSAGE ?KEELBEAM OPEN?. NO OTHER FAULTS NOTED.;[02] REMOVED AND REPLACED COMPARTMENT OVERHEAT DETECTION UNIT IAW AMM 26-18-01 OPS CK GOOD