What was found
AFTER DEPARTURE, PILOT REPORTED VACUUM INOP, RETURN TO AIRPORT. REPLACED CENTRAL VACUUM FILTER, D.G. AND ATTITUDE GYROS DUE WATER CONTAMINATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER DEPARTURE, PILOT REPORTED VACUUM INOP, RETURN TO AIRPORT. REPLACED CENTRAL VACUUM FILTER, D.G. AND ATTITUDE GYROS DUE WATER CONTAMINATION.