On November 18, 1996, at 2049 eastern standard time (est), a
Boeing 737-222, N9038U, registered to United Air Lines, Inc.,
operated as flight 422, sustained no damage after the captain
reported a fire warning on the number two engine and gave the
order to evacuate the airplane at the Kent County International
Airport, Grand Rapids, Michigan. There were no injuries to four
crewmembers. One flight attendant (F/A) received a minor injury.
A 79 year old passenger received a fractured ankle and another
passenger twisted a knee. The remaining 80 passengers reported
no injuries. Visual meteorological conditions prevailed at the
time and an IFR flight plan was filed. The flight was a domestic
passenger flight, operating under 14 CFR Part 121, from Chicago,
Illinois, to Grand Rapids, Michigan.  The glareshield fire-
warning light illuminated intermittently with an intermittent
aural warning during descent into the Kent County International
Airport. The Captain directed the First Officer to troubleshoot
the fire warning