As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUAL ENGINE ROLLBACK DURING REVENUE FLIGHT, ON INITIAL CLIMB THROUGH FL300, CREW EXPERIENCED A DOUBLE ENGINE POWER ROLLBACK OF 4.6 PERCENT. ONCE OUT OF ICING, ENGINES RETURNED TO NORMAL OPERATION. ENGINE DOWNLOAD WAS PERFORMED. TEMP PROBES AND ENGINE HARNESS ARE FOCUS OF INVESTIGATION.