What was found
DURING FLIGHT 3453/3505 THE NR 4 ENGINE INTAKE LOW PRESSURE LIGHT ILLUMINATED. A/C RETURNED TO DTW. REMOVED AND REPLACED INTAKE ANTI-ICE VALVE, ALL CHECKS GOOD. REMOVED AND REPLACED INTAKE ANTI-ICE VALVE ALL CHECKS GOOD AT THIS TIME.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING FLIGHT 3453/3505 THE NR 4 ENGINE INTAKE LOW PRESSURE LIGHT ILLUMINATED. A/C RETURNED TO DTW. REMOVED AND REPLACED INTAKE ANTI-ICE VALVE, ALL CHECKS GOOD. REMOVED AND REPLACED INTAKE ANTI-ICE VALVE ALL CHECKS GOOD AT THIS TIME.