At 21:32:38, the cockpit voice recorder (CVR) recorded a temporary interruption in power. A second later, Flight Engineer Moyano exclaimed, "Flame out[;] flame out on engine number four." The CVR recorded another interruption in power one second after that, and Moyano said, "Flame out on engine number three[;] essential on number two or number one." The captain acknowledged. At 21:32:49, Klotz radioed the controller, informing him that the flight had "just ah lost two engines[,] and ... we need priority please." The controller instructed the flight to fly southwest to intercept the localizer. Klotz acknowledged this. The flight crew selected the ILS. At 21:33:04, the controller informed the flight that they were fifteen miles from the outer marker and cleared them for an ILS approach on runway 22L. Klotz acknowledged. That was the final radio transmission from Flight 52. Caviedes asked if the ILS had been selected. Klotz replied, "It is ready on two" at 21:33:23. One second later, the CVR stopped recording. At 21:34:00, the controller tried to radio the flight, asking, "You have enough fuel to make it to the airport?" There was no response.