As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINT LIGHT ILLUMINATES ON ROLLOUT. GROUNDED - YES. PERFORMED B737-9 IFIM TASK G79-21-00-810-801. FOUND DEEP SCRATCH IN ODMS SENSOR. REMOVED & REPLACED ODMS SENSOR REF. B737-9 AMM 79-21-12. FOUND ODMS CHIP COUNT FOR #1 ENG. TO BE 29 FOR BOTH CH. A & B. NO CHIPS FOUND ON ODMS SENSOR. INSPECTED #1 ENG STARTER MAGNETIC PLUG AND OIL DRAIN PLUG FOR METALLIC CHIPS REF. AMM 80-11-09-200-801-G00. NO DEFECTS NOTED. REMOVED & REPLACED AIR OIL SEPERATOR ON #1 ENG REF. ASA T/C SBLEAP-1B-79-0012-1.