CHICAGO, April 12 (UPI) --
Four of Chicago's O'Hare International Airport's seven runways were closed Thursday night because of a malfunctioning lighting system, officials said.
Federal Aviation Administration officials said the lights on runways 27L, 27R, 32R and 22R -- all on O'Hare's north side -- were either out or flickering, NBC-TV, Chicago, reported.
The problem began at about 9:19 p.m. and was fixed about an hour later.
Delays were likely as planes were diverted to the remaining runways, the TV station said.
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