The four people that authorities thought were missing since a twin-engine aircraft crashed Thursday morning on top of a building at Wichita Mid-Continent Airport apparently are the same four who were confirmed dead earlier in the day, authorities said. The pilot, retired air traffic controller Mark Goldstein, was the only one on board the plane. ||||| Related Coverage Photos: Plane crash at Wichita airport 
 
 
 
 WICHITA, Kansas – Two people are dead after a small plane has crashed at Wichita’s Mid-Continent Airport, sending up huge plumes of black smoke that can be seen for miles around the city. The crash happened around 9:50 a.m. 
 
 Four people have been transported to Via-Christi Hospital. One person is in critical condition. Three people are in fair condition. Via Christi says they are expecting another patient. Wesley Medical Center has not received any patients from the crash. 
 
 PHOTOS: Plane crashes at Mid-Continent Airport 
 
 KSN has confirmed from the FAA that a twin engine Beechcraft King Air lost an engine on takeoff from Wichita’s Mid-Continent airport and crashed into the two-story FlightSafety International building located on South Airport Road. The plane was trying to return to the runway. 
 
 “The airport crews arrived first. Seeing smoke and flames and what appears to be a plane striking the building. Firefighters engaged in a horrific fight for several minutes. We have the fire under control. We are in the process of trying to determine if all the employees and visitors who may have been in the building are accounted for,” said Wichita Fire Chief Ron Blackwell. 
 
 Fire trucks were positioned near the crash and were pouring water on the wreckage. The east side of the roof on the Flight Safety building has collapsed. One person is in critical condition. KSN has learned as many as five people are now unaccounted for. Crews have knocked down the fire and are reportedly entering the building to check for people. 
 
 Mid-Continent Road to the airport is closed except for emergency traffic. Flights are operating as normal according to Mid-Continent Airport. 
 
 FAA investigators are at the scene. The National Transportation Safety Board has been notified. 
 
 At least 50 to 60 firefighters from the Wichita Fire Department are battling the fire. They were withdrawn 
 
 KSN has multiple crews at the scene. Look for updates online on KSN.com.
– At least four people are dead after a small plane crashed at Wichita's Mid-Continent Airport this morning, sending up "towering plumes of black smoke that could be seen for miles," in the words of AP. The twin-engine Beechcraft King Air reported losing engine power just after takeoff, according to Federal Aviation Administration spokesman Tony Molinaro, who says the plane hit a building on airport property while trying to return to the runway. KSN reports that four are dead and four others are missing. The pilot, identified as Mark Goldstein, was among those killed. “He was an air traffic controller who retired less than a year ago and became a contract pilot, and he would contract his services to different airplane owners and operators," says an acquaintance at a local aviation company. “He talked to the tower before he crashed. They knew his voice."