After a brief flight yesterday I noticed a black screw on the floor below the instrument panel on the passenger side. Inspection of the panel revealed that it had come from one corner of the instrument panel. After screwing it back I tested all the other screws on the panel and those attached to individual gauges. Several of these screws were loose. Vibration had taken its toll.
Its a good idea to check this periodically.
George Feldman
N33GF