According to Federal Aviation Administration (FAA) personnel, as the airplane approached Dillingham, the flight crew requested the RNAV GPS 19 instrument approach to the Dillingham Airport about 0757 from controllers at the Anchorage Air Route Traffic Control Center (ARTCC). The ARTCC specialist on duty subsequently granted the request by issuing the clearance, with instructions to proceed direct to the Initial Approach Fix (IAF) to begin the approach, and to maintain an altitude of 2,000 feet or above. A short time later the flight crew requested to enter a holding pattern at the IAF so that they could contact the Flight Service Station (FSS) for a runway conditions report, and the ARTCC specialist granted that request. The ARTCC specialist then made several attempts to contact the aircraft, but was unsuccessful and subsequently lost radar track on the aircraft.
Hmmm, I hope I am reading this correctly, but looking at the chart that is linked to at the bottom, the minimum over (and northeast of) the IAF (ZEDAG) is 4300' within a 4nm radius, and 6300nm within a 30nm radius, and 5400' 30nm SW of the IAF. I hope the refence to 2000' feet is simply wrong, they would have had charts out with the higher altitudes I think, and 2000 feet is way to low.