A runway safety alert didn't notify ATC of a potential collision before the deadly Air Canada crash, the NTSB head said

NTSB investigators found that a safety system designed to alert ATC of impending runway collisions didn't activate before the Air Canada crash.

NTSB

• The NTSB said the truck that collided with a regional jet in New York didn't have a transponder.
• She said the lack of equipment prevented a runway warning system called ASDE-X from activating.
• ASDE-X uses radar and satellite data to track ground movements and alert ATC of potential conflicts.

The head of the National...