the cockpits, but that the third unit was planned to be a new-style model. At the time of the accident, the aircraft in Flight 320 still only had the two original altimeters. An investigative hearing of the CAB began in New York City on March 18, 1959. In testimony before the board, first officer Hlavacek confirmed the information that he had given in his earlier interviews and stated that he and the other crew members had checked their altimeters several times during the flight, including when they passed by Newark, New Jersey, saying that his and the pilot's altimeter were very close. He said that at the time of the crash, the pilot had been using the automatic pilot with partial manual control during the approach, and also said that some ice had formed at the top of the windshield, but it had not been considered serious. He said that he had not seen any sign of the runway through the windshield ahead, but that he had caught sight of a few reddish lights flashing past his side windows just before impact. The investigative board confronted flight engineer Cook with transcripts of an interview that he had given immediately after the accident, in which he stated that the aircraft's altimeter had shown under one hundred feet at the time of impact, but he had later testified that it showed five hundred feet. Cook stated that at the time, he was in a state of shock and that in his mind he had mistaken the one on the drum to mean one hundred feet instead of one thousand feet. He confirmed that he had turned on de-icing equipment before the plane had started its descent, and confirmed that the pilot had been using the automatic pilot to fly the plane during the descent. He said that he had been flying with Captain Dewitt since 1951, that he knew him well, and that it was the pilot's custom to use the automatic pilot to descend until about 400 feet above the runway, at which point he would switch to manual control. He also testified that he had seen nothing but blackness through the windshield up to the time of the crash. Accident investigators took the altimeters that were recovered from the crash to the instrument shop at La Guardia Airport for a detailed examination. On February 26, an article in the Chicago