As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE LOST POWER DURING CLIMB-OUT. SECURED ENGINE AND RETURNED TO STATION. REMOVED RENTAL ENGINE, A SIMILAR OCCURRENCE HAD PREVIOUSLY HAPPENED WITH THIS ENGINE ON ANOTHER AIRFRAME. TROUBLESHOOTING DID NOT DETERMINE THE ACTUAL SOURCE OF THE PROBLEM. SUSPECTED THE ENGINE WIRING HARNESS. (X)