WASHINGTON, D.C. (CBSDFW.COM/AP) – A recording from the cockpit of a Boeing 767 cargo plane carrying Amazon packages that crashed into a Texas bay in February suggests the pilot lost control while preparing to land at a Houston airport.

The National Transportation Safety Board says its preliminary review of the audio found that 18 seconds before the flight’s blackbox recording ends there were “crew communications consistent with a loss of control of the aircraft.

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The NTSB does not say why the crew may have lost control. Investigators found that air traffic control had given the crew instructions to land on a runway at George Bush Intercontinental Airport before the plane dropped into the shallow bay about 35 miles east of Houston.

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The crash killed all three people aboard. The bodies of Captain Rick Blakely, Conrad Aska, the 44-year-old first officer and co-pilot, and Sean Archuleta, a 36-year-old jump-seat passenger have been recovered.

Investigators are still reviewing the patchy audio and information from the flight’s data recorder. The NTSB cautions its early findings may change.

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(© Copyright 2019 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)