Paragraph 1
Thousands of
across the USA were grounded on Friday after a
communications failure in
traffic control systems. The Federal Aviation Administration ordered a nationwide ground stop after
with communications equipment. More than 3,500 airplanes were in the
at the time. Thousands of flights were cancelled, leaving
stranded. The problem was traced to an
router, possibly as a
of maintenance to replace old copper
with fibre-optic cables. Operations may take days to return to
.
