As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING TAKEOFF, ENGINE MASTER CAUTION ILLUMINATED WITH MULTIPLE FAILURES; FLIGHT DECLARED EMERGENCY AND RETURNED TO FIELD. REPLACED RH PITOT AIR DATA MODULE WITH SERVICEABLE UNIT IAW AMM 34-21-04, OPS CHECK GOOD.