After considerable research I have not been able to find any viable sourcing for that conclusion.
Can you share your source confirming this...i.e., band name?, club scheduled at?, previous venues played at?
There was one source quoting contact with an individual claiming to be their agent, however he is no longer to be found and he did not provide any specifics to substantiate the story.
July 21, 2004, 7:21 p.m.
The Syrian Wayne Newton
The man inadvertently behind a scare in the skies.
[snip]
"I talked to James Cullen of Anthem Artists who confirms that Nour Mehana's large band did arrive on Northwest Flight 327. Some of them came in from Detroit, and some from Lebanon. Cullen says they never said anything about a disturbance on the flight to him, even though "I stayed in the same hotel, they were nice, they stayed right above me." He said that they were fine musicians, put on a great show, and he would work with them again in the future."