Kobe Bryant death: 1 year after crash, bill introduced to mandate helicopter safety system City News Service CALABASAS (CNS) -- One day ahead of the anniversary of the Calabasas helicopter crash that killed Laker legend Kobe Bryant, his 13-year-old daughter Gianna and seven others, two California legislators on Monday announced a bill that would require Terrain Avoidance Warning Systems on all helicopters carrying six or more passengers. "Mandatory terrain awareness equipment on all helicopters has been recommended by the NTSB (National Transportation Safety Board) for 15 years,'' said Sen. Dianne Feinstein, D-California, who announced the bill with Rep. Brad Sherman, D-Sherman Oaks. "It's clear the simple addition of this equipment will help keep passengers safe and prevent crashes due to poor visibility.''