What was found
(CAN) AIR TURNBACK DUE TO NR 2 CONSTANT SPEED DRIVE (CSD) FAILURE, APU WOULD NOT TAKE LOAD, CSD REPLACED AND THE AIRCRAFT WAS RETURNED TO SRVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) AIR TURNBACK DUE TO NR 2 CONSTANT SPEED DRIVE (CSD) FAILURE, APU WOULD NOT TAKE LOAD, CSD REPLACED AND THE AIRCRAFT WAS RETURNED TO SRVICE.