As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT PROCEDURES, THE LT ENGINE FIRE TEE HANDLE DID NOT ILLUMINATE VIA PRESS TO TEST. SYSTEM TROUBLESHOOTING REVEALED THAT THE LT ENGINE ACCESSORY GEARBOX FIRE SENSING ELEMENT, PIN U WAS SHORTED BETWEEN THE CENTER CONDUCTOR AND SHIELDING. REPLACEMENT OF THE FIRE SENSING ELEMENT CORRECTED THE PROBLEM. (M)