What was found
PSC - ON TAKEOFF ROLL, MASTER WARNING FLICKERS CONTINUOUSLY. RETURNED TO FIELD WITHOUT INCIDENT. REPLACED MASTER WARNING CONTROL BOX, OPERATIONAL CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PSC - ON TAKEOFF ROLL, MASTER WARNING FLICKERS CONTINUOUSLY. RETURNED TO FIELD WITHOUT INCIDENT. REPLACED MASTER WARNING CONTROL BOX, OPERATIONAL CHECK GOOD.