What was found
(CAN) VACUUM COUPLING FAILED. PROBLEM FOUND ON START UP AND FLIGHT ABORTED. REPLACED VACUUM PUMP WITH NEW UNIT. ALL WORK PERFORMED BY MAINTENANCE AND SIGNED OUT IN LOGS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) VACUUM COUPLING FAILED. PROBLEM FOUND ON START UP AND FLIGHT ABORTED. REPLACED VACUUM PUMP WITH NEW UNIT. ALL WORK PERFORMED BY MAINTENANCE AND SIGNED OUT IN LOGS.