The S-76 helicopter that crashed and killed Kobe Bryant, his 13-year-old daughter and seven others was not equipped with a critical warning system.

The terrain awareness and warning system (TAWS) alerts pilots when aircraft are too close to the ground.

In the wake of the crash, Sikorsky, the maker of the helicopter, has been urging its customers to make sure they have safety measures like TAWS installed.

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Investigators say it is too early to tell whether a TAWS on Bryant’s Sikorsky helicopter could have prevented the crash.

National Transportation Safety Board officials say they think it should have been installed on the aircraft.

The warning system is not mandatory on helicopters under Federal Aviation Administration regulations.

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