What was found
VACUUM PUMP FAILED UNDER NORMAL ENGINE OPERATING CONDITIONS. THE INTERNAL DRIVE COUPLING AND ASSOCIATED INTERNAL SPLINE ASSY SEPARATED FROM THE ROTOR. (NOT TO BE CONFUSED WITH THE NORMAL BREAK AWAY FLEXIBLE COUPLING.) (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
VACUUM PUMP FAILED UNDER NORMAL ENGINE OPERATING CONDITIONS. THE INTERNAL DRIVE COUPLING AND ASSOCIATED INTERNAL SPLINE ASSY SEPARATED FROM THE ROTOR. (NOT TO BE CONFUSED WITH THE NORMAL BREAK AWAY FLEXIBLE COUPLING.) (X)