What was found
PILOT REPORTED LEFT GYRO PRESSURE INOPERATIVE. INSPECTED AND FOUND SHEARED LEFT PUMP. WHILE REPLACING SYSTEM FILTERS, FOUND IN-LINE FILTER INSTALLED BACKWARDS. THIS IS BELIEVED TO HAVE CAUSED FAILURE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT REPORTED LEFT GYRO PRESSURE INOPERATIVE. INSPECTED AND FOUND SHEARED LEFT PUMP. WHILE REPLACING SYSTEM FILTERS, FOUND IN-LINE FILTER INSTALLED BACKWARDS. THIS IS BELIEVED TO HAVE CAUSED FAILURE.