Jumpers on their way to altitude over Skydive Tecumseh, MI caused a bit of a ruckus aboard a Spirit Airlines flight bound for Texas in an Airbus 319. The incident is under investigation by the FAA.
The pilot of the jump plane did see the Airbus and was in contact with air traffic control. The pilot of the jetliner is reported to have acknowledged seeing the skydiving plane on his terminal collision avoidance system (TCAS). Controllers notified the jetliner of the position of the skydiving plane. Shortly thereafter , the pilots of the jet get a warning from the automated collision avoidance system (TCAS) and in response dive the plane down 1600 feet (from 14,400 ft to 12,800 ft. Drinks were spilled, passengers scared and items in overhead bins did indeed shift.
The planes are reported to have been separated by 1.6 miles horizontally and 400 ft vertically. Skydiving planes operate under visual flight rules (VFR) and by the sounds of it, the jump pilot was doing exactly what he was supposed to be doing.