As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT CAPTAINS AIRSPEED INDICATOR .95 ON CAPTAINS SIDE/COPILOTS MACH INDICATOR .76 MACH AIRSPEED CLACKER SOUNDED UNCONTROLLABLE COMPLIED WITH COM 2.31.8 LANDED AT DFW CONFIRMED FAULT OF NR 1 MACH IND. REMOVED AND REPLACED IND SYSTEM CHECK GOOD IAW MM 34-12-00 CHECKED MACH IND AT .5, .6, .7 AND .75 MACH ALL IND NORMAL AND AGREED WITH BARFIELD DPS350 TEST BOX