What was found
DURING DESCENT, AT ABOUT 26000 FT, DADC 1 WENT OFF LINE, CAUSING LOSS OF VARIOUS SYSTEMS, AFTER EVALUATING THE SYSTEMS LOSS AND COMPAIRING ALTIMETERS, IT WAS DETERMINED DADC 1 HAD GONE OFF LINE, DADC 2 SELECTED AND SYSTEM RESET. ABOUT 30 SECONDS LATER DADC 2 WENT OFF LINE, DECLARED AN EMERGENCY. ABLE TO RESET DADC 2 AND RESET ALL SYSTEMS, FLIGHT CONTINUED UNEVENTFUL AND LANDED WITHOUT INCIDENT.