As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) PITOT SYSTEM PRESSURE LINE SEPARATED FROM CONNECTION TO HOURMETER AIRSPEED SWITCH - SUSPECT LINE DISCONNECTED DURING REFITMENT OF TACH INDICATOR DURING AD/INST/9 CALIBRATION CHECK WHICH WAS CARRIED OUT FOLLOWING PITOT/STATIC CALIBRATION CHECK