As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: LOST CAPTAINS AND FIRST OFFICERS AIRSPEED INDICATION DURING TAKE OFF ROLL. DID NOT REJECT TAKE OFF. AFTER TAKE OFF AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW WHERE IT LANDED SAFELY. ** SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)