What was found
(CAN) NR 1 ACM COOLING TURBINE WHEEL SHAFT FAILED DURING GROUND RUNS, TURBINE EXITED ACFT THROUGH EXHAUST DOOR. THE ACM WAS REPLACED AND THE ACFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) NR 1 ACM COOLING TURBINE WHEEL SHAFT FAILED DURING GROUND RUNS, TURBINE EXITED ACFT THROUGH EXHAUST DOOR. THE ACM WAS REPLACED AND THE ACFT RETURNED TO SERVICE.