FAA Bulletin Clarifies Runway Status Light Procedures
Runway status lights provide a visual signal indicating when it is unsafe to enter or cross a runway and begin or continue a takeoff.
The FAA has issued Safety Alert for Pilots (SAFO) 17011 to ensure that pilots and airport personnel are aware of the correct procedures concerning runway status lights (RWSLs), a fully automated system intended to prevent runway collisions. It cited several instances in which pilots have ignored the illuminated red in-pavement lights when issued a clearance to cross or take off from that runway.
According to the pilot reference guide for RWSLs, whenever a pilot observes the red lights of the runway entrance lights, that pilot should stop at the hold line or along the taxiway path and remain stopped. The pilot should then contact ATC for resolution if the clearance conflicts with the lights. Under no circumstances should pilots proceed without both an ATC clearance and visual confirmation that runway status lights are not illuminated.