terrain in a nose-down attitude, killing the pilot and all six passengers. Investigators found that the glideslope antenna cable had not been securely connected, which rendered some of the avionics useless, increasing the workload for the pilot. Investigators also concluded that the pilot had been awake for 18 consecutive hours before the accident and that the aircraft was loaded with the center of gravity too far aft, rendering it difficult to control. The accident was attributed to "the pilot's failure to maintain control of the airplane during the instrument approach in night instrument meteorological conditions, which resulted in the airplane exceeding its critical angle of attack and an aerodynamic stall/spin. Contributing to the accident were pilot fatigue, the pilot's increased workload during the instrument approach resulting from the lack of glideslope guidance due to an inadequately connected/secured glideslope antenna cable, and the airplane being loaded aft of its balance limit." See also List of airports in Illinois References External links Central Illinois Regional Airport at Bloomington-Normal, official website Bloomington airport born of FDR's New Deal - Pantagraph (Bloomington, Illinois newspaper) Aerial image as of March 1999 from USGS The National Map Airports in Illinois Transportation buildings and structures in McLean County, Illinois