What was found
(CAN) FAILURE OF VACUUM AIR PUMP ON DESCENT DURING UFR OPERATIONS. VANE FAILURE, DRIVE SHEARED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) FAILURE OF VACUUM AIR PUMP ON DESCENT DURING UFR OPERATIONS. VANE FAILURE, DRIVE SHEARED.