fly from PETERBOROUGH to TORONTO…arriving at the gate 69 shutdown engine with the CESSNA 172 SKYHAWK …waiting for navlog report…NO REPORT…shutdown avionics …got the navlog report…TBM 930 13 SEPTEMBER MONTREAL to ST HUBERT…WHATS THE CATCH…something wrong again…also sometimes the altitude in the PFD FREEZE…plane continue to move up but the altitude in the PFD just freezing at the minimum.height.