Once-troubled pop icon Whitney Houston seems to have been causing quite a ruckus on a Delta flight Wednesday (Oct. 12) according to reports by People and TMZ.

The diva was involved in an incident aboard an Atlanta-to-Detroit flight as a source close to the singer confirmed to People. According to eye witnesses, Houston, 48, refused to fasten her seat belt and was nearly kicked off the plane after she "got diva" with a crew member.

Whitney was eventually buckled up -- not of her own accord, but by a flight attendant -- before takeoff. "She wasn't drunk, drinking or on drugs; she was just exhausted," a source told People.

A TMZ source revealed that Whitney "overreacted a little bit after missing an earlier flight but she's still 100% sober and was on the way to Detroit for her first day of shooting a new movie."