What was found
PDX - WHILE IN TURBULENCE FO'S PFD DISPLAY LOST AIRSPEED HEADING AND ALTITUDE INFORMATION. AFTER 20-30 SECONDS DISPLAY BACK TO NORMAL. MAINTENANCE REPLACED THE DADC. OPERATIONAL CHECKS GOOD AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX - WHILE IN TURBULENCE FO'S PFD DISPLAY LOST AIRSPEED HEADING AND ALTITUDE INFORMATION. AFTER 20-30 SECONDS DISPLAY BACK TO NORMAL. MAINTENANCE REPLACED THE DADC. OPERATIONAL CHECKS GOOD AIRCRAFT RETURNED TO SERVICE.