As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C N8420000, FOUND #1 ENGINE CORE FIRE DETECTOR HARNESS MW0326 DAMAGED ON 12 O'CLOCK POSITION. (BUSHING CHAFFING THROUGH HARNESS). GROUNDED - YES. REPLACED AND TESTED MW0326 REF B737-900 AMM 26-11-02-000-802 AND -400-802. OPS NML. WORK ACCOMPLISHED ON #1 ENG.