On November 9, 2001, at approximately 1300 mountain standard time, a Cessna 206, N9582G, operated by Millard County Sheriff's Office, Millard County, Utah, was substantially damaged during a hard landing at Natrona County International Airport (CPR), Casper, Wyoming. The private pilot and his passenger were not injured. Visual meteorological conditions prevailed and no flight plan was filed for this cross-country flight being conducted under Title 14 CFR Part 91 Public Use. The flight originated from Fillmore, Utah, at approximately 1100. According to the pilot, the airplane's attitude indicator and directional gyro failed while en route to Minot (MOT), North Dakota. The pilot suspected the vacuum pump had failed and made a precautionary landing in Casper. The pilot made a hard landing on runway 26, separating the nose landing gear from the airplane. The airplane also sustained damage to the firewall and the outboard 2 feet of the right wing. The winds at the time of the accident were 220 degrees at 21 knots gusting to 28 knots.