As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO 1 ENG OVERHEAT FIRE TEST FAILED. GROUNDED - YES. UNABLE TO DUP/VERIFY DISCREP. OPS TEST GOOD NUMEROUS TIMES REF. 22-11-00.INSPECTION AND SHAKE DOWN OF A&B DETECTORS AND WIRING HAD NO DISCREP. REPLACED CORE FIRE DETECTOR HARNESS MWO326 REF. B737-900 AMM 26-11-02. OPS CHK GOOD.