What was found
STL - AIRFRAME DEICE LOW PRESSURE INDICATION. MAINTENANCE DEFERRED AIRFRAME DEICE PER MEL. SUBSEQUENTLY CLEARED DMI BY REMOVING AND REPLACING DEICE PRESSURE REGULATOR VALVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STL - AIRFRAME DEICE LOW PRESSURE INDICATION. MAINTENANCE DEFERRED AIRFRAME DEICE PER MEL. SUBSEQUENTLY CLEARED DMI BY REMOVING AND REPLACING DEICE PRESSURE REGULATOR VALVE.