What was found
"FIRE R-B FAULT' ON STATUS.// PERFORMED TROUBLESHOOTING PER FIM 26-11 TASK 806 UP TO ITEM F STEP 2. PENDING AVIONICS WIRE CHECK. PERFORM FIM 26-11 TASK 806 FROM ITEM F(2) ONWORDS. FOUND NO OPEN CIRCUITS ON FIRE DETECTORS. ALL FIRE DETECTOR RESISTANCE VALUE CHECK OK. WIRING FROM P1-3010 TO R ENG LOOP SELECT SWITCH OK. FAULT STILL SHOWS. NEED TO CONTINUE TROUBLESHOOTING. FOUND GEARBOX-MOUNTED FIRE DETECTOR SHORTED. REMOVED AND REPLACED THE FIRE DETECTOR PER AMM 26-11-02. OPS CHECK GOOD. OK FOR SERVICE.