What was found
DURING CLIMBOUT FROM MILWAUKEE, AIRFOIL ICE PROTECTION PRESSURE ABNORMAL LIGHT CAME ON. AIRCRAFT RETURNED TO MILWAUKEE. MAINTENANCE REMOVED AND REPLACED THE RIGHT PRESSURE REGULATOR VALVE FOR STICKING OPEN.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMBOUT FROM MILWAUKEE, AIRFOIL ICE PROTECTION PRESSURE ABNORMAL LIGHT CAME ON. AIRCRAFT RETURNED TO MILWAUKEE. MAINTENANCE REMOVED AND REPLACED THE RIGHT PRESSURE REGULATOR VALVE FOR STICKING OPEN.