As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE NH GAUGE (ANALOG & DIGITAL), INOP DURING FLIGHT. NL WAS OK. RETURNED TO PDX. LEFT ANALOG AND DIGITAL PORTION OF NH GAUGE READ EITHER -0- OR ERRATIC. NL WORKS FINE. REPLACED WIRE HARNESS 3115911-01 ON LEFT ENGINE. RAN ENGINES FOR OPS CHECK. OPS CHECK GOOD PER MM 77-00-00. REMOVED AND REPLACED LEFT NH/NL INDICATOR IAW M/M 77-00-00. RAN ENGINES AT HIGH POWER SETTINGS FOR 15 MINUTES. OPS CHECK GOOD.