the point of impact, the CAB concluded that it was likely that one or more of the pilots had misread the altimeter due to their unfamiliarity with the new style. It also concluded that there was a possibility that the crew had misread the vertical speed indicators, which also used a different scale than what had been used in older aircraft or in the training received by the captain. The CAB concluded that all of the required airport, boundary, and runway lights were on and functioning at the time of the accident. However, because the lights were slanted upward at between three and five degrees, and because of a dike located between the end of runway 22 and the water, the CAB concluded that they would not have been visible to the crew because of the aircraft's premature descent below the cloud level. The CAB's conclusions were soundly criticized by the president of the Air Line Pilots Association, who called the report "grossly inaccurate in a number of respects", and that the report failed to satisfactorily explain the reason for the accident and assumed factors that had not been established by fact. He said that pilots at American Airlines were united in protest against the report, saying it "slandered and wrongfully accused" crew members of the plane, and was aimed at "conveniently writing the accident off the books" rather than accurately determining a cause. He said that in the association's judgement, the crash was the result of marginal weather conditions and inadequate approach and lighting aids at the airport. First officer Frank Hlavacek said he was "furious" over the CAB report, saying the board tried to take the easy way out by blaming a dead captain. He said he hoped that American Airlines would protest the report. Additional investigations On February 6, 1959, a special House subcommittee was named to investigate the crash and overall safety issues that the aviation industry was experiencing while transitioning from piston aircraft to jet and turboprop aircraft. The subcommittee was headed by Representative John Bell Williams of Mississippi, a former World War II bomber pilot. Representative Oren Harris of Arkansas said the subcommittee would look into the equipment that was being used on the new aircraft as well as the training of their crews. The five members of the subcommittee visited LaGuardia Field on February 12, and inspected the runway where Flight 320 had