🇺🇸 N12216 - Boeing 737NG 824/W - United Airlines UAL2459/UA2459 (STL-DEN-YYC) - 3.4 mi away @ 13975 ft, heading NW at 433 mph. Spotted 18x before. [10:54:14 AM CDT]
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Map of the St. Louis area showing the position and track of the aircraft described in the post.